Product Information Boxster/Boxster S Foreword

After eight successful years, the now classic Boxster (986) is to be succeeded by the new Boxster (987). A daunting challenge by any measure, which the new Boxster generation meets with a wealth of technical, design and stylistic innovations.

This training brochure provides detailed information on the many innovations of the new Boxster. It also looks at the cars’ strategic competitors.

The aim of this brochure is to provide the international Porsche sales organisation with the ability to advise customers extremely competently concerning the two new Boxsters. We have therefore taken particular care to supply extensive background information which encloses not only the description of the technical conversion but also the related advantages of the product. Thus, the present Product Information includes information tailored to the customers’ or prospects’ needs and purchasing motives. This knowledge naturally should be used se- lectively when offering professional technical advice.

Dr. Ing. h.c. F. Porsche Aktiengesellschaft

Marketing & Sales Training Contents

1 Overview ...... 1 1.1 Development objectives ...... 2 1.2 Overview ...... 3 1.2.1 Main innovations in comparison with the previous model (986) ...... 6 1.2.2 Main differences between the Boxster and Boxster S (987) ...... 9 1.3 Design ...... 10 1.3.1 Exterior design ...... 10 1.3.2 Interior design ...... 13

2 Engines ...... 15 2.1 Overview ...... 16 2.2 Comparison of the 2.7 litre and 3.2 litre engines (987 and 986) ...... 18 2.3 Basic engine ...... 20 2.3.1 Crankcase ...... 20 2.3.2 Cylinder head and camshaft control ...... 20 2.3.3 Oil supply/oil level measurement ...... 20 2.4 Cooling ...... 21 2.5 Air cleaner ...... 22 2.6 Intake system ...... 22 2.7 Ignition ...... 24 2.8 Engine management and On-Board Diagnostics system (OBD) ...... 24 2.9 Exhaust system ...... 25 2.10 Sport Chrono functions ...... 27 2.11 Change intervals ...... 28

3 Transmission ...... 29 3.1 Manual gearbox ...... 29 3.1.1 5-speed manual gearbox ...... 29 3.1.2 6-speed manual gearbox ...... 29 3.1.3 Transmission ratios ...... 29 3.1.4 Synchronisation ...... 29 3.1.5 Shifting and shift lever ratio ...... 31 3.1.6 Transmission cooling ...... 31 3.1.7 Dual-mass flywheel and clutch ...... 31 3.2 Tiptronic S ...... 31 4 Chassis ...... 33 4.1 Front axle ...... 33 4.2 Steering system ...... 35 4.3 Rear axle ...... 36 4.4 Brake system ...... 37 4.4.1 Boxster operating brake ...... 37 4.4.2 Boxster S operating brake ...... 38 4.4.3 Porsche Ceramic Composite Brake (PCCB) ...... 38 4.4.4 Parking brake ...... 41 4.5 Porsche Active Suspension Management (PASM) ...... 42 4.5.1 How PASM works ...... 43 4.5.2 Software modules for special control algorithms ...... 44 4.5.3 How the PASM map-controlled dampers work ...... 45 4.6 Porsche Stability Management (PSM) ...... 46 4.6.1 Properties of the enhanced PSM ...... 47 4.6.2 Sport mode (Sport Chrono function) ...... 48 4.7 Wheels and tires ...... 50 4.7.1 Wheels ...... 50 4.7.2 Tires...... 51 4.7.3 Run-flat systems ...... 52 4.8 Tire pressure monitoring system (RDK) ...... 52

5 Body ...... 53 5.1 Body-in-white without doors and handles ...... 53 5.2 Doors/lids ...... 54 5.3 Roll-over bar ...... 55 5.4 Bumper system ...... 55 5.5 Front end ...... 56 5.6 Rear end ...... 57 5.7 Rear spoiler ...... 57 5.8 Side air inlet ...... 57 5.9 Tank ...... 58 5.10 Luggage compartments ...... 59 5.10.1 Front luggage compartment ...... 59 5.10.2 Rear luggage compartment ...... 60 5.11 Glazing ...... 60 5.12 Wind deflector...... 61 5.13 Electrically operated convertible top ...... 62 5.14 Hardtop ...... 63

6 Aerodynamics ...... 64 6.1 Optimization of the styling of the outer skin ...... 66 6.2 Optimisation of the cooling-air guide ...... 67 6.3 Underbody lining ...... 68 6.4 Add-on parts ...... 69 7 Interior ...... 70 7.1 Material design ...... 70 7.2 Leather interior ...... 72 7.3 Storage bins and transport concept ...... 73 7.4 Steering wheels...... 75 7.4.1 Basic steering wheel ...... 75 7.4.2 Sports steering wheel ...... 76 7.4.3 Multi-function steering wheel ...... 76 7.5 Pedals ...... 77 7.6 Seats ...... 78 7.6.1 Overview ...... 78 7.6.2 Standard seats ...... 79 7.6.3 Fully electric seats ...... 80 7.6.4 Sports seats ...... 80 7.6.5 Adaptive sports seats ...... 80

8 Electrics ...... 82 8.1 Main headlights and front lights ...... 82 8.1.1 Halogen main headlights ...... 83 8.1.2 Bi-Xenon main headlights incl. headlight washer system ...... 83 8.2 Rear light unit and high-level third brake light ...... 85 8.3 Exit lighting/coming home lighting ...... 86 8.4 Wiper system ...... 86 8.5 ParkAssist ...... 86 8.6 Door mirrors/interior mirror ...... 87 8.7 Interior lighting ...... 87 8.8 HomeLink ® ...... 87 8.9 Instruments...... 88 8.10 Steering column stalk ...... 89 8.11 Cruise control ...... 89 8.12 Heating/air conditioning ...... 90 8.13 Ignition lock with one-key system ...... 91 8.14 Power windows ...... 91 8.15 Networking ...... 92 8.16 Sport Chrono Package/Sport Chrono Package Plus...... 92 8.16.1 Analogue stopwatch ...... 92 8.16.2 Sport mode/Sport button ...... 93 8.16.3 Performance display in the PCM ...... 94 8.16.4 Individual memory ...... 95

9 Safety and security ...... 96 9.1 Anti-theft protection ...... 96 9.2 Active safety ...... 96 9.3 Passive safety ...... 98 10 Environment ...... 101 10.1 Materials/recycling ...... 101 10.2 Noise/acoustics ...... 102

11 Audio and communication ...... 103 11.1 CDR-24 CD radio with sound system ...... 103 11.2 Sound Package Plus ...... 103 11.3 BOSE® Surround Sound system ...... 104 11.4 Aerial system ...... 106 11.5 CD autochanger/CD autochanger preparation ...... 106 11.6 Porsche Communication Management (PCM) ...... 106 11.6.1 Navigation ...... 106 11.6.2 Telephone module ...... 107 11.7 Mobile phone preparation ...... 107 11.8 Passive handset ...... 107

12 Equipment (EU model)...... 108 12.1 Standard equipment (EU model) ...... 108 12.2 Individual equipment for MY05 ...... 111

13 Colors...... 117 13.1 Exterior colors ...... 117 13.2 Convertible top colors ...... 117 13.3 Interior colors ...... 117

14 Maintenance costs (cost of ownership) ...... 118 14.1 Maintenance ...... 118 14.2 Repair/insurance classification ...... 119

15 Technical specifications...... 120

16 Comparison...... 125 16.1 An overview of main and secondary competitors ...... 125 16.2 Tabular comparison ...... 128 16.3 Side-by-side comparison of Boxster/Boxster S and main competitors . . . 131 16.3.1 Audi TT Roadster 3.2 quattro ...... 132 16.3.2 BMW Z4 3.0i...... 134 16.3.3 Mercedes-Benz SLK 350 ...... 136 16.3.4 Nissan 350 Z Roadster ...... 138 16.4 Overview of product advantages/customer benefits ...... 140 Figure 1: Boxster generations (986 and 987)

1 Overview Apart from providing marked increases in power to improve performance, the After eight successful years in pro- new Boxster and Boxster S also offer duction, the now classic Boxster (986) a considerably broader spectrum of is to be succeeded product features. Practicality and by the new Boxster (987). comfort have been further improved. A comprehensive range of interesting The exterior immediately reveals the options for individualisation with new vehicle to be a totally new yet typical technologies tailor-made for a sports car Boxster. The new roadster has a more is also available. powerful, attractive and fascinating appearance, without abandoning the This Boxster generation will fascinate classic lines. Boxster aficionados and roadster novices alike. The interior has been completely redesigned, incorporating typically clear- The Boxster will thus remain the bench- lined Porsche design elements and mark in the roadster segment and observing the very highest standards of establish itself among new and known ergonomics and quality to make the competitors. new Boxster a study in automobile evolution par excellence.

1 1.1 Development objectives •To evolve the Boxster design features • To maintain the “best-in-class” aerodynamic performance of the The development objectives for the com- • To come up with a new design for Boxster through further improvement plete overhaul of the model series were the interior and exterior with an of the resistance and lift coefficients influenced by the success story of the emphasis on night-time design, while Boxster to date and the accompanying retaining typical design features • To offer a level of standard equip- customer reactions. We therefore sent ment comparable with the competition questionnaires to approx. 20,000 sales •To improve the ergonomics of the staff of the previous Boxster. Numerous passenger compartment, particu- • To consistently implement light- letters from customers as well as mar- larly for taller people weight construction techniques ket observation likewise provided valu- able information on our worldwide dealer • To maintain Porsche’s competitive • To significantly improve the cost of organisation. edge in the areas of driving per- ownership formance, driving dynamics, The specification also took into consider- braking power and active safety, ation technological trends and infor- while achieving a constant level mation from the competitive envi- of comfort ronment. • To offer an S model with even greater It was from this information reservoir performance and a different look to that the main objectives for develop- the basic model ment of the new Boxster generation were derived: • To deliver the attractive, typical Porsche sound

Figure 2: Boxster and Boxster S (987)

2 1.2 Overview

Exterior/ interior: The exterior has been completely redesigned, giving the new Boxster a more powerful appearance. In addition to widening the body by 21mm/ 0.83 in, the track has also been widened in comparison with the previous model by up to 35 mm/1.38 in at the front and 24 mm/0.95 in at the back depending on the tire size. Particularly striking details include the new headlights with separate head- lamps on the front end (fog lamp/ Figure 3: Boxster S marker light), the more pronounced wing, the new double-arm door mirror, the new aerodynamically optimised rear spoiler and the new dynamic joint style. The line of the convertible top has also been redesigned around the side windows.

The completely redesigned interior has been enhanced ergonomically, while retaining typical Porsche design features. More headroom, a higher backrest, a steering wheel that is now also height-adjustable and repositioned pedals ensure better ergonomics for taller persons. Figure 4: Boxster interior

The new materials and component designs used, with their attention to Also available as an option is a multi- detail, give a very high quality look. function steering wheel that can be used to operate the various functions of The newly developed seats offer bet- the optional PCM. ter seating comfort and lateral support thanks to features such as a wider back- Interior upgrades right up to a full rest. Adaptive sports seats are just leather interior are available as an op- one of the extra options available. tion (incidentally the full leather interior “Adaptive” means that the side bolsters is available for the first time in a two- of the seat cushion and the backrest can tone design (Black with Stone Grey)). be individually adjusted to the respective Discreetly trimmed decorative seams in occupants and the respective driving a wide range of colors emphasise the situation using two controls on the outer craftsmanship of the design and convey side of the seat. a particular air of quality.

3 Engine/transmission: the respective driving situation. A button The new steering system with vari- The basic Boxster is driven by a 2.7 in the center console allows the driver to able ratio is extremely sensitive and litre engine whose output has been in- select between the Normal and Sport precise and, together with the new creased by 12 HP to 240 HP. The programmes. chassis setup, ensures virtually perfect Boxster S has a further enhanced 3.2 driving behaviour. litre engine developing 280 HP, 20 HP The new Sport Chrono Package more than before. option includes an analogue stopwatch The S variant transmits this power to and a Sport button for activating Sport the rear wheels via a newly developed mode. As the Sport Chrono Package 6-speed manual gearbox whose shift Plus in combination with the optional throw has been reduced by approx. PCM, the performance display offers 15 %. The basic Boxster retains the fa- extra useful information as well as an miliar 5-speed manual gearbox, likewise individual memory. Sport mode can be with shift throw reduction, as standard activated using a button in the center equipment. The 6-speed manual gearbox console and offers, among other things, is available as an option in combination a very sporty setup for the optional with the newly developed Porsche Active PASM. A PSM setup designed for Suspension Management (PASM). racing conditions with a higher slip threshold, steeper accelerator pedal Chassis: characteristic and a more abrupt Both the Boxster and the Boxster S high-speed cut-off round off the func- feature an enhanced aluminium chas- tional scope. In addition to consider- sis and a track whose width has been ably increasing performance and increased by up 35 mm/13.8 in de- agility, these packages also help to pending on the wheel/tire combination. improve lap times. The wheels on both vehicles have a larger rolling circumference that together with a new tire generation con- tributes to the improved driving dynamics. The Boxster is now equipped with 17-inch wheels as standard, while the S model is equipped with the even more impressive 18-inch wheels as standard. In combination with the now standard Porsche Stability Management (PSM), the chassis sets new standards in active driving safety. Porsche Active Suspension Management (PASM), an electronically controlled damper adjustment system, can be ordered as an option. This system allows the ride height to be lowered by 10 mm/0.39 in and resolves the eternal conflict between the desire for comfort in everyday use and sporty performance on country roads or closed circuits. It automatically ad- justs the shock absorption capability to Figure 5: Short block and transmission of the Boxster S

4 Figure 6: Technological overview of the Boxster S

Safety and security: scopes of the PCM is offered as an While the active safety of the new optional extra for increased comfort. Boxster models has been improved, it is in the area of passive safety that Four high-quality loudspeakers significant enhancements have been ensure excellent sound as standard. made. With fullsize airbags for driver Sound Package Plus, the first upgrade and passenger and separate head and level for the audio offering, offers a thorax airbags, the Boxster now has superior sound experience and plentiful 6 airbags in total as standard. The newly sound reserves for all driving conditions. designed seats with integrated thorax The sound experience can be further airbags are a key element in the revised enhanced on request with the new Bose Porsche Side Impact Protection Surround Sound system. This means System (POSIP). that for the first time surround sound can now be enjoyed in the Boxster. Audio/communication: Eleven loudspeakers including subwoofer The Boxster series is fitted with the and a 7-channel digital amplifier inte- Porsche CDR-24 double-height CD radio grated in the digital MOST ® bus ensure as standard for improved ergonomics. a sound experience never before experi- An enhanced PCM with navigation enced in the sports car and specifically module and separate DVD drive in the the roadster segment. luggage compartment is available upon request. The integrated CD drive can now also be used without restriction as an audio drive. An optional telephone module, similarly enhanced, is also available for this system. A multi-function steering wheel with controls for the various audio and communication

5 1.2.1 Main innovations in comparison with the previous model (986)

Boxster (987) Boxster S (987 S) Boxster (986) Boxster S (986 S) MY05 MY04 Overall vehicle Completely new exterior/interior design Previous exterior/interior design

6-cylinder horizontally opposed engine Drive 2.7 l (164 cu in) 3.2 l (194 cu in) 2.7 l (164 cu in) 3.2 l (194 cu in) 176 kW/240 HP 206 kW/280 HP 168 kW/228 HP 191 kW/260 HP 270 Nm/199 lbft 320 Nm/236 lbft 260 Nm/192 lbft 310 Nm/229 lbft

New intake system with twin-branch distribution pipe, Basic larger air cleaner

Light-weight exhaust system Standard exhaust system

Standard manifold High-performance manifold Standard manifold

Emission classification EU4 Emission classification EU3, LEV

5-speed manual gearbox with New 6-speed manual gearbox 5-speed manual gearbox 6-speed manual gearbox approx. 26 % reduction in with approx. 15 % reduction shift throw Optional: 6-speed in shift throw manual gearbox with approx. 15 % reduction in shift throw (in combination with PASM (Sport package))

Adapted 5-speed Tiptronic S with improved shifting comfort 5-speed Tiptronic S

Sport Chrono Package (optional) Not available Chassis

Improved standard chassis Basic (track width, kinematics/elastokinematics, strength, weight, etc.) Optional: PASM chassis incl. lowering by 10 mm and Optional: Sports chassis incl. lowering by 10 mm two programmes, “Normal” and “Sport”

Steering with variable transmission ratio, Steering with fixed transmission ratio, steering wheel with manual reach and height adjustment steering wheel with manual reach adjustment

4-piston aluminium monobloc fixed-caliper brake

Basic Power-boosted brake system Basic Power-boosted (with larger brake master brake system cylinder among other things)

Brake calipers: anodised black Brake calipers: painted red Brake calipers: anodised black Brake calipers: painted red

Brake discs: Brake discs: Brake discs: Brake discs: ventilated and perforated ventilated and perforated ventilated ventilated and perforated FA: Ø 298 mm x 24 mm / FA: Ø 318 mm x 28 mm / FA: Ø 298 mm x 24 mm / FA: Ø 318 mm x 28 mm / FA: Ø 11.73 in x 0.94 in FA: Ø 12.53 in x 1.1 in FA: Ø 11.73 x 0.94 in FA: Ø 12.53 in x 1.1 in RA: Ø 299 mm x 20 mm / RA: Ø 299 mm x 24 mm / RA: Ø 292 mm x 20 mm / RA: Ø 299 mm x 24 mm / RA: Ø 11.77 in x 0.79 in RA: Ø 11.78 in x 0.95 in RA: Ø 11.50 in x 0.79 in RA: Ø 11.78 in x 0.95 in Brake booster Basic with 18 % increase in boosting factor

ABS 8.0 ABS 5.7

Not available Optional: Not available Porsche Ceramic Composite Brake (PCCB)

6 Boxster (987) Boxster S (987 S) Boxster (986) Boxster S (986 S) MY 05 MY 04 Chassis 17-inch Boxster II wheel 18-inch Boxster S wheel 16-inch Boxster wheel 17-inch Boxster S II wheel FA: 6.5J x 17 RO 55 FA: 8J x 18 RO 57 6J x 16 RO 50 7J x 17 RO 55 RA: 8J x 17 RO 40 RA: 9J x 18 RO 43 7J x 16 RO 40 8.5J x 17 RO 48 with tires: with tires: with tires: with tires: FA: 205/55 ZR17 FA: 235/40 ZR18 FA: 205/55 ZR16 FA: 205/50 ZR17 RA: 235/50 ZR17 RA: 265/40 ZR18 RA: 225/50 ZR16 RA: 255/40 ZR17

Optional: Optional: Optional: Optional: New 18- and 19-inch wheels New 19-inch wheels 17- and 18-inch wheels 17- and 18-inch wheels

Tire sealing compound and compressor High-pressure spare wheel and jack

PSM (standard) with improved performance (PSM 8.0) and PSM (optional) optional Sport Chrono Package for an even more agile setup Body/exterior Improved torsional and flexural rigidity (+9 % / +14 %), Basic improved crash structures

Body width: +21 mm/+0.38 in Basic

Luggage compartment lid (f/r) made from aluminium Luggage compartment lid made from steel

New double-arm door mirror Standard door mirror

New bow-type door handles Hinged door handles

3-layer convertible top, improved water management system, 2-layer convertible top opening/closing possible at speeds ut to 50 km/h / 30 mph

Side windows with water-repellent coating Side windows without coating

Integrated optical parking sensors (optional) Basic

Further enhanced aerodynamics Basic

cd = 0.29 cd = 0.30 cd = 0.31 cd = 0.32 Titanium-colored Silver-colored Black logo on rear lid Titanium-colored logo logo on rear lid logo on rear lid on rear lid

Central oval tailpipe Central dual tailpipes Central oval tailpipe Central dual tailpipes (new design) (new design) Body/interior Completely new interior design (higher-quality appearance, Basic ergonomically optimised, new colors, more storage, etc.)

Leather interior (optional) featuring more decorative seams in Leather interior (optional) a discreet contrasting color for an even higher-quality look

New seats with numerous improvements (e.g. more headroom, Basic more shoulder room, substantially improved lateral support) Optional: adaptive sports seat

New sports pedal system with pedals repositioned Basic further forward

New steering wheels 3-spoke steering wheel (3-spoke steering wheel (standard), 3-spoke sports steering wheel (optional), multi-function steering wheel (optional, only in combination with optional PCM)

New integrated switches and operating concept Basic

New POSIP featuring: POSIP featuring: – Side-impact protection elements in each door – Side-impact protection elements in each door – Head airbags integrated in door-trim panel – Side airbags integrated in door-trim panel – Thorax airbags in side bolsters of seats

7 Boxster (987) Boxster S (987 S) Boxster (986) Boxster S (986 S) MY 05 MY 04 Electrics/electronics Clear-glass H7 projection beam headlights (halogen),new design H7 reflective headlights (halogen); with improved illumination; indicator light integrated in module, fog light, indicator light and marker light integrated in one fog light and position light moved to front-apron unit module

Bi-Xenon headlights (optional) Litronic headlights (optional) with automatic range adjustment and headlight washer system with automatic range adjustment and headlight washer system

High-level third brake light: LED (response time: 0.1 ms) High-level third brake light: bulb (response time: 100 ms)

Cruise control (optional) featuring extended speed range Cruise control (optional) with speed range (30–240 km/h / 19–150 mph) from 40–210 km/h / 25–131 mph

Alarm system including interior radar surveillance

Automatic coming home lights Not available

HomeLink® (integrated garage door opener, optional, Not available standard for USA) Audio/communication Double-height CDR-24 radio incl. 4 loudspeakers (standard) CDR-23 radio incl. 2 loudspeakers (optional, standard: USA)

Porsche Communication Management (PCM) with Porsche Communication Management (PCM) with 5.8″ color screen, CD radio, aerial diversity and extended 5.8″ color screen, radio with combined CD/CD-ROM drive, on-board computer aerial diversity and extended on-board computer incl. integrated DVD navigation module (optional) (map material for Europe on CD-ROM one DVD) Navigation module (map material for Europe on 3 CD-ROM’s)

Telephone module with improved hands-free quality (optional) Telephone module (optional) USA: mobile phone preparation also available for PCM

Sound Package Plus with 7 loudspeakers, 180 W (optional, Digital sound package with 6 loudspeakers, 220 W (optional) standard on Boxster S in USA)

BOSE® Surround Sound system BOSE® Sound system with 11 loudspeakers, 325 W (optional) with 10 loudspeakers, 225 W (optional) Performance/weights (values in brackets refer to Tiptronic S) Top speed: Top speed: Top speed: Top speed: 256 (250) km/h 268 (260) km/h 253 (248) km/h 264 (258) km/h 160 (156) mph 167 (162) mph 158 (155) mph 165 (161) mph

0–100 km/h / 0–62 mph: 0–100 km/h / 0–62 mph: 0–100 km/h / 0–62 mph: 0–100 km/h / 0–62 mph: 6.2 (7.1) s 5.5 (6.3) s 6.4 (7.3) s 5.7 (6.4) s

80–120 km/h / 50–75 mph, 80–120 km/h / 50–75 mph, 80–120 km/h / 50–75 mph, 80–120 km/h / 50–75 mph, penultimate gear: penultimate gear: penultimate gear: penultimate gear: 6.9 (7.7) s 6.8 (7.2) s 6.9 (7.7) s 7.4 (7.5) s

Unladen weight (DIN): Unladen weight (DIN): Unladen weight (DIN): Unladen weight (DIN): 1,295 kg … 1,410 kg / 1,345 kg … 1,430 kg / 1,275 kg … 1,400 kg / 1,320 kg … 1,430 kg / 2855 lbs … 3109 lbs 2965 lbs … 3153 lbs 2811 lbs … 3086 lbs 2910 lbs … 3153 lbs (1,355 kg … 1,455 kg) / (1,385 kg … 1,470 kg) / (1,330 kg … 1,455 kg) / (1,360 kg … 1,470 kg) / (2987 lbs … 3208 lbs) (3053 lbs … 3241 lbs) (2932 lbs … 3208 lbs) (2998 lbs … 3241 lbs)

Nürburgring lap time (Nordschleife): Nürburgring lap time (Nordschleife): Boxster: 8:31 min Boxster: 8:42 min Boxster S: 8:18 min Boxster S: 8:27 min Cost of ownership Significant reduction in the cost of ownership Basic and costs of regular maintenance

Prolonged oil change intervals: Oil change intervals: mileage-based, every 30,000 km / 20,000 miles mileage-based, every 20,000 km / 12,000 miles

Prolonged main service intervals: Main service intervals: mileage-based, every 60,000 km / 40,000 miles mileage-based, every 40,000 km / 24,000 miles

Table 1: Main innovations in comparison with the previous model (986) 8 1.2.2 Main differences between the Boxster and Boxster S (987)

Detail Boxster Boxster S Exterior Tailpipes Oval individual tailpipe Dual tailpipes

Air inlet grille in front apron Black Titanium-colored

Model logo Titanium-colored Silver-colored

Third air inlet in front apron Not available Standard

Wheels 17-inch Boxster II wheel 18-inch Boxster S wheel Engine Engine 2.7 l (164 cu in) 3.2 l (194 cu in) 176 kW/240 HP 206 kW/280 HP 270 Nm/199 lbft 320 Nm/229 lbft

Transmission 5-speed manual gearbox 6-speed manual gearbox with dual-mass flywheel with dual-mass flywheel Chassis Brake system Standard brake system Power-boosted brake system

Brake calipers Anodised black Painted red Interior Alarm system/ Alarm system incl. Alarm system standard, interior surveillance radar interior surveillance (optional) radar interior surveillance (optional)

Design details Painted Volcano Grey Painted Volcano Grey, accentuating details in aluminium-look finish

Dials Black Light Grey

Door armrest and center console Basis In leather with stitching storage bin

Gear lever Cap with 5-speed gearshift pattern Cap with 6-speed gearshift pattern (design as on basic model)

Scuff plates Plastic cover with soft-touch paint finish Plastic cover with soft-touch paint finish embossed with metal “Boxster” logo embossed with metal “Boxster S” logo

Table 2: Main differences between the Boxster and Boxster S (987)

9 Figure 7: Boxster S

1.3 Design function”. While the silhouette of the ed lighting component design and vehicle retains the quintessential the delicate surfaces. 1.3.1 Exterior design Boxster look, the restyled exterior with its many new features represents a The front lights with a combination of The first Boxster with the internal significant visual departure from the fog light and marker light are a classic development code 986, launched over previous model. The multitude of inno- accent. Their deep position significantly 8 years ago, was the start of a new vations is impossible to take in at first increases the efficiency of the fog lights. chapter in the success story of glance, a fact which increases interest The same attention to detail has been Porsche. The focus in developing the and generates enthusiasm. exercised for the reflectors and the front new Boxster generation 987 has been light housing as for the main headlights. to redesign its appearance, while at Front view: The separation of the main headlight and the same time cultivating and accen- The front view of the vehicle is charac- front light is a striking detail with a high tuating the design features for which terised by its application of classic recognition value: the marker light illu- Porsche and in particular the Boxster Porsche design principles. The new minates to the extreme front and side of are known. The car had to be instantly headlight shape with separate front the headlight when it is dark. recognisable as a Boxster and visu- lights underneath, the large air inlets ally distinct from the 911. and the new contour of the front The face: Utterly new, and yet unmis- top are design features worthy of the takeably Porsche. The new Boxster is like an athlete who Boxster. has kept training and whose form has improved over the years. Its powerful The shape of the main headlights in appearance is characterised by taut particular defines the face of the new surfaces and striking, well-defined Boxster. Their deeper and wider position musculature. With its details of a high makes the front end look shorter and in design quality, the overall appearance the process wider and more powerful. represents the living embodiment of the The clear glass technology employed Porsche motto “forms follows allows a direct view of the sophisticat-

10 Side view: The new side air inlet echoes the door The side view is characterised by the window pane appearance and the rear powerful shape of the wings. This ef- door gap, its individual measures com- fect is emphasised by the clearer and bining to produce a smooth side view much more solid lines of the doors. with a clean style and a number of new The door sill detail, which is continued features in comparison with the previ- to the front and rear ends, makes the ous model. side of the vehicle look both stream- lined and stable at the same time. The wheel cutouts provide space for wheels with larger rolling circumferences. The additional styling detail in the form of a narrow lip around the wheel cutouts emphasises the dynamic nature of the wheels: 17-inch wheels with a dynamic 5-double-spoke design for the basic model and 18-inch wheels with a striking 5-spoke design for the Boxster S. Three different 19-inch wheels are available as an option for the Boxster. The 19-inch Carrera Classic wheel is an extremely elegant five-spoke wheel with narrow spokes that provide a good view of the technical details. The 19-inch SportDesign wheel is the new interpre- tation of the old Porsche multi-spoke wheel. The wheel designs available as standard for the 911 Carrera S can also be ordered in 19-inch versions for the Boxster and Boxster S.

The line of the convertible top has also been redesigned around the side Figure 8: Boxster windows, giving it a more taut shape when seen from the corner of the eye. As well as offering more headroom when getting in and out, the redesigned convertible top also allows better over- the-shoulder visibility.

The new door mirror continues the design concept of the Carrera GT mirror, taking it one step further with a horizontal double arm. The new door handle with its curved design complements the new door both ergonomically and stylistically. Figure 9: Boxster

11 Figure 10: Boxster S

Rear view: The rear view of the Boxster is dominated by the dynamic rear lights. They feature a new, brilliant look achieved through a clean division between the red and clear area. Whereas the tail light on the previous model illuminated just one light chamber, the tail light on the new Boxster illuminates all three light chambers to give the rear view a new typical Porsche night-time design. The high-level third brake light is now fitted with a clear cover. The dynamism of the rear has been further accentuated by the rear section joints which start at the wheel housing and climb towards the rear – yet another design detail borrowed from the Carrera GT. The pronounced rear lid joint between the lights, which fits in perfectly with the styling of the rear spoiler, lends the rear added impact. The rear is finished by the central tailpipe which also serves as a distinguishing feature.

12 Figure 11: Boxster S interior in Cocoa leather

1.3.2 Interior design technique, seams and surface struction has been paid to ensuring that all ture has been improved in comparison switches meet the ergonomic require- The complete redesign of the interior with the previous model. The percentage ments of a sports car. was undertaken with the aim of en- of soft paint surfaces has been re- hancing, optimising and reinforcing duced and more components based proven details and configurations. on slush technology used instead. The cockpit, which now features The advantages of slush technology are stronger and more powerful shapes, higher-quality surfaces, more pre- is dominated by four round vents cise sizing of components, uniform finished with high-quality metal-look graining and the option to describe decorative rings. Foremost among the very small radii. The overall impression round instruments is the central rev is one of higher quality. counter. The new night-time design, with its white LED lighting, increases The Boxster has a new 3-spoke steer- the impression of quality of the in- ing wheel with clear, geometric terior and illuminates all of the controls shapes. The optional sports steering and displays to great effect. wheel also draws from this concept but appears even sportier thanks to its The center console, switches, air outlet round shapes and has a slightly smaller vents and equipment have been seam- rim with integrated thumb rest. lessly integrated in the new dashboard and designed to give that familiar The new center console echoes the Porsche impression, even at first styling features of the new interior. The glance. This impression is strengthened number of joints has been significant- by the clean lines of the door-trim ly reduced and the styling of the radio, panel. The quality of the interior with air-conditioner controls and all other regard to joint quality, upholstering switches standardised. Particular atten-

13 The redesign of the interior has permitted the provision of a practical storage bin under the air conditioning control panel and the realisation of a larger glove compartment. The newly developed cup holder is located behind the decorative dashboard trim. The decorative trim can be returned into its original position once the cup holder is extended, ensuring a unified dashboard look.

The shift lever has been ergonomically improved and given a sportier design. The storage bin in the center console behind the handbrake lever has been fitted with a longer and more padded lid which can be used as a center arm rest.

The redesigned door-trim panels reflect the stronger structure of the interi- or and the ergonomic aim of increasing the intuitiveness of the controls. So, for example, the direction of operation of the controls for the power windows now matches the window movement. The switches for the seat memory of the optional fully electric seats and the adaptive sports seats Figure 12: Centre console have also been integrated in the door- trim panels. All of the controls are in the driver’s field of vision so that they can be used without the driver being distracted from what is happening on the road.

Figure 13: Door-trim panel

14 2 Engines

The output and torque of the Boxster have been increasing step by step ever since its introduction in October 1996. The basic Boxster started with a 2.5 litre engine and 204 HP, however by the time of the introduction of the S variant (developing 252 HP from 3.2 litres) in model year 2000 it had increased to 2.7 litres and 220 HP. The most recent versions available from MY03 have both more output (228 HP/ 260 HP) and more torque with the associated higher toque curve.

Figure 14: Output and torque of 987 vs. 986 The development of the new Boxster generation has provided the opportunity for another significant revision of the engines. The 2.7 litre engine of the Boxster now delivers over 176 kW (240 HP), while the 3.2 litre engine of the Boxster S delivers an impressive 206 kW (280 HP). However the new engines have more than just their power values going for them – they also offer greater power in the lower and mid rev range (Boxster: 270 Nm/199 lbft, Boxster S: 320 Nm/229 lbft; both between 4,700 and 6,000 rpm).

As well as the model designation on the rear lid, the two engine variants of the Boxster series can be identified by their Figure 15: Output and torque of 987 S vs. 986 S different tailpipes. The Boxster has an oval tailpipe with a new design, while the Boxster S has redesigned dual tailpipes.

15 2.1 Overview

Both Boxster engines are characterised by the following design features:

• 6-cylinder horizontally opposed engine • Water cooling • Aluminium block and cylinder heads • Integrated dry sump lubrication system • Four-valve technology • Hydraulic valve clearance compensation • “VarioCam” camshaft adjustment • Hot-film air flow sensor

• Two-stage resonance intake system Figure 16: Short block and transmission of the Boxster • Fuel injection (sequential; multipoint) • Individual ignition coils, static high- voltage ignition system • Electronic engine management system (Motronic ME 7.8) • Cylinder-specific knock control • Idle compensation device • Electronic accelerator pedal • Parallel three-way catalytic converters, each with pre-catalytic and main catalytic converter • Stereo Lambda control circuit (linear-measurement pre-catalytic converter sensor and narrow band oxygen sensor as control sensor) • On-Board Diagnosis system for monitoring the exhaust emission control system

Figure 17: Section of the 3.2 litre engine (Boxster S)

16 The 3.2 litre engine has its 6-cylinder horizontally opposed design with outstanding balancing of masses and rigid camshaft/crankshaft drive to thank for its minimal vibration and typical Porsche sound.

The redesign of the exhaust system, in particular the manifold and silencer, and the air cleaner has allowed the gas cycle to be improved even further. These measures have helped to improve performance, reduce weight and ensure compliance with statutory exhaust requirements. The increase in torque in the lower rev range is Figure 18: Output and torque of Boxster vs. Boxster S (987) down to a twin-branch distribution pipe with intake-manifold flap. It is also a major contributing factor to the maximum torque value being between 4,700 and 6,000 rpm – for both the Boxster and the Boxster S. This enables high performance and above all good flexibility characteristics.

The 3.2 litre engine used in the new Boxster S has many characteristics in common with the 2.7 litre engine. One major difference, however, is that the new 2.7 litre engine uses a fully aluminium crankshaft bearing house, while the crankshaft bearing saddle of the 3.2 litre engine continues to be made with grey cast iron inserts because of the greater engine power.

17 2.2 Comparison of the 2.7 litre and 3.2 litre engines (987 and 986)

bold = changes Boxster (987) Boxster S (987 S) Boxster (986) Boxster S (986 S) MY 05 MY 04 Max. engine output 176 kW (240 HP) 206 kW (280 HP) 168 kW (228 HP) 191 kW (260 HP) at rpm @ 6,400 rpm @ 6,200 rpm @ 6,300 rpm @ 6,200 rpm

Max. torque 270 Nm/199 lbft 320 Nm/236 lbft 260 Nm/192 lbft 310 Nm/229 lbft

at rpm @ 4,700 – 6,000 rpm @ 4,700 rpm @ 4,600 rpm

Specific output 65.2 kW/l (88.9 HP/l) 64.4 kW/l (87.5 HP/l) 62.5 kW/l (85.0 HP/l) 61.3 kW/l (83.3 HP/l)

Exhaust emission Euro 4, LEV Euro 3/D4, LEV standard

Crankcase Fully aluminium Aluminium bearing Aluminium bearing saddle with bearing saddle, saddle with grey cast grey cast iron inserts, thicker bearing shells iron inserts, bearing shells (reduction in weight bearing shells 5.5 kg/12.1 lbs)

Crankshaft With deeper central hole Status as of MY 04 (reduction in weight 0.3 kg/0.7 lbs)

Belt drive Tensioning rollers/deflection pulleys Tensioning rollers/deflection pulleys made of steel made of plastic in engines with manual gearbox (reduction in weight approx. 0.5 kg/1.1 lbs)

Air cleaner New air cleaner Status as of MY 04 with new housing

Resonance intake system With twin-branch distribution Status as of MY 04 pipe with intake-manifold flap

Electrics fans in engine Infinitely adjustable 2 with two-stage adjustment compartment

Exhaust system Lower exhaust gas back pressure Status as of MY 04 thanks to larger cross sections and damping of drive-related vibrations by heat-resistant damping elements, among other things

Manifold Standard manifold; High-performance Standard manifold lighter in weight manifold; lighter in (with integrated pre-catalytic converter in USA) with integrated pre- weight with integrated catalytic converter pre-catalytic converter

Catalytic converter 3-way catalytic converter system with one 3-way catalytic converter system with one pre- and one main catalytic converter catalytic converter left and right (USA: cascade left and right; lightest catalytic converters in catalytic converters) the world

Silencer Lighter in weight with improved flow rate; Status as of MY 04 2 parallel silencers with crossover pipe and integrated main catalytic converter

Tailpipe Oval tailpipe Dual tailpipes Oval tailpipe Dual tailpipes in new design in new design

Water pump Optimised impeller for increased flow rate and Status as of MY 04 improved component cooling

Water bearing casing Plastic, flow-optimised Die-cast aluminium (reduction in weight 0.85 kg/1.9 lbs)

Tandem pump Vacuum for brake boosting provided Sucking jet pump and vacuum reservoir by a mechanical vacuum pump

18 bold = changes Boxster (987) Boxster S (987 S) Boxster (986) Boxster S (986 S) MY 05 MY 04 Oil extraction pump Lower frictional losses and Status as of MY04 higher delivery capacity (reduction in weight 80 g/0.18 lbs)

Oil dipstick Omitted Present (reduction in weight 180 g/0.39 lbs)

Oil/water heat Carry over Carry over parts Different versions exchanger parts concept concept (reduction in weight 360 g/0.79 lbs)

Radiator air flow Closed, air is directed Open, air is directed downwards in front of the concept to the front wheel housings front wheel housings

Radiator fan control Continuous Two-stage

Engine compartment Operation depends on intake air Operation depends on intake air temperature scavenging blower and ambient air temperature

Engine oil quantity 10.4 l/2.75 US gal 10.4 l/2.75 US gal 10.4 l/2.75 US gal 10.6 l/2.8 US gal (factory filling)

Secondary air pump Fastened directly to the engine (reduced Fastened directly to the body noise, reduction in weight 0.25 kg)

Air-conditioning Standard Optional compressor

Engine weight MT: 190.5 kg/420 lbs MT: 196.3 kg/433 lbs MT: 195.0 kg/430 lbs MT: 196.2 kg/433 lbs AT: 182.8 kg/403 lbs AT: 187.8 kg/414 lbs AT: 188.3 kg/415 lbs AT: 188.5 kg/416 lbs

Battery 60 Ah 70 Ah 60 Ah USA: 70 Ah USA: 80 Ah

Generator 2,100 W 1,680 W

Motronic ME 7.8/40 ME 7.8 (enhanced computing and memory capacity)

Oil change 30,000 km / 20,000 miles 20,000 km / 12,000 miles

Air filter change 60,000 km / 40,000 miles 40,000 km / 24,000 miles

Spark plug change 90,000 km / 60,000 miles 80,000 km / 48,000 miles

Poly V-belt change 90,000 km / 60,000 miles 80,000 km / 48,000 miles

Table 3: Comparison of the 2.7 litre and 3.2 litre engines (987 and 986)

19 2.3 Basic engine 2.3.2 Cylinder head and camshaft 2.3.3 Oil supply/oil level control measurement 2.3.1 Crankcase The cylinder heads of the Boxster Both Boxster engines feature the familiar A large amount of development on the engines are in three parts: cylinder integrated dry sump lubrication sys- 2.7 litre engine has been rewarded head with 4 valves per cylinder, cam tem. Its purpose is to ensure a reliable with effective weight-reduction follower housing with hydraulic tappets supply of oil at all times. Two return measures. The bearing saddle which and cylinder head cover. pumps draw the oil out of the cylinder used to be made from grey cast iron is heads. It is then defoamed in two swirl now made from an aluminium alloy. The new 2.7 litre and 3.2 litre engines pots before being directed to the oil The crankshaft now has thicker bear- also use the familiar VarioCam cam- sump. A third oil pump in the oil sump ing shells to enable it to absorb the shaft adjustment system. VarioCam is provides the lubrication points in the higher forces of the performance-en- based on the idea of producing a vari- engine with pressure oil. This principle hanced engine without difficulty. able engine which can be optimised for guarantees an optimum oil supply, maximum performance and torque even under extreme conditions such as The crankshaft bearing saddle of the as well as favourable fuel economy high lateral acceleration. 3.2 litre engine continues to be made and exhaust emissions when driving with grey cast iron inserts because of in city traffic or on secondary roads. The launch of the water-cooled Boxster the engine’s significantly higher perform- This is achieved by adjusting the timing engine generation in October 1996 was ance. of the inlet camshafts (“VarioCam”). the ideal opportunity to introduce an Adjustment of the timing is performed additional electrical oil level measure- using the familiar “vane adjuster” ment with display in the instrument clus- control element. ter as a complement to the classic oil level measurement via the oil dipstick. Following on from positive experiences with electrical oil level measurement and a changeover in measuring habits away from manual measurement via the oil dipstick to electrical oil level measurement, the new Boxster engines – like the new 911 Carrera/S engines – do not have an oil dipstick (for more information see the Product Information for the 911 Carrera/911 Carrera S).

Figure 19: VarioCam

20 2.4 Cooling

The new Boxster retains the familiar cross-flow cylinder head cooling system from the first Boxster for efficient and even distribution of coolant to all cylinders. The water pump, now a carry over part with the new 911 Carrera/S, ensures a higher coolant flow rate.

The Boxster and Boxster S versions with manual gearbox are fitted with two radiator modules located as before in the wings ahead of the front wheels. These have been increased both in area (approx. 5 %) and depth (approx. 20 %) and are identical with the radiator modules of the new 911 Carrera/S. The two Figure 20: Front-of-vehicle technology in the Boxster S more powerful electric fans also feature automatic requirement-driven control and a modified air flow concept.This ensures The new line layouts for the radiator in On the Boxster S with Tiptronic S, an optimised air flow and an aerody- the front end and the reworking of the an additional third radiator is used in namically optimised cooling-air sys- radiator connections have reduced the front end of the vehicle to facilitate tem. This new feature permits infinite the sensitivity of the new Boxster cooling of the automatic transmis- control of the fan speed as a function models to damage and hence reduced sion oil via an additional oil-water heat of the coolant temperature and the repair costs. The use of cost-effective exchanger in the common water circuit. system pressure in the air conditioning brackets with desired break points system instead of two-stage control. prevents the radiator module being dam- The improvement in the efficiency of It has the advantage of requiring less aged in a slight collision, for example. the water-cooling system means that the current and therefore creates less of a When it comes to repair, the damaged smaller oil/water heat exchanger load on the vehicle electrical system plastic carriers can be replaced and (engine-oil cooling) of the 2.7 litre engine as well as being less noisy. the radiator module re-mounted. Further- can now also be used in the 3.2 litre more the use of quick couplings engine, which has resulted in a reduc- throughout the cooling system pipework tion in weight of 360 g/0.79 lbs. has reduced the amount of repair work required in the event of damage, again resulting in lower repair costs.

21 2.6 Intake system The distribution pipe flap is closed in the lower rev range which causes the The new Boxster engines are equipped 6-cylinder engine to behave like two with a new intake system. As with the 3-cylinder engines running in parallel in previous generation of engines, the terms of routing of the intake air, there- system for the new engines is once by improving torque behaviour in the again a resonance intake system with lower rev range. The distribution pipe a switchable resonance flap in the trans- flap is open in the upper torque ranges. verse resonance tube between the later-

Figure 21: Air cleaner al containers. This new, two-stage resonance intake system can be used to better adjust 2.5 Air cleaner The main innovation is a twin-branch the air oscillations in the intake system distribution pipe with intake-mani- to the respective engine speeds to en- The flow optimisation measures under- fold flap. The intake pipe features a lon- sure higher torques even at low rpms, taken and the resultant reduction in gitudinal partition wall which allows the a more even torque curve and high backpressure are the main reasons for intake volumes of the two cylinder banks maximum output. the improvement in performance. to be separated or combined by means The larger filter area results in less of a switchable flap. specific stress, which has enabled the change intervals to be extended to 60,000 km / 40,000 miles.

The significant improvement in the degree of water deflection (“spray water management”) ahead of the air cleaner, which protects the hot film air flow sensor against failure caused by taking in minute droplets of water, has also had a positive effect with regard to maintenance costs.

Figure 22: Intake system

22 Figure 23: Operation of resonance and distribution pipe flaps (Boxster)

Figure 24: Operation of resonance and distribution pipe flaps (Boxster S)

Boxster 2.7 litre Boxster S 3.2 litre Distribution pipe flap open 3,000 ... 5,000 3,500 ... 4,700 at rpm 5,600 ... 7,200 5,400 ... 7,200

Resonance pipe flap open 5,000 ... 7,200 4,700 ... 7,200 at rpm

Table 4: Switching points of the flaps in the intake system

23 2.7 Ignition 2.8 Engine management and The familiar On-Board Diagnostics On-Board Diagnostics system system (OBD -> USA) or the European The new Boxsters feature the familiar (OBD) On-Board Diagnostics system (EOBD -> static high-voltage ignition system Europe/RoW) is also used on the new with individual ignition coils. The function The new Boxster models are equipped Boxster models. of the distributor has been adopted from with the familiar engine management the Motronic system, where the output system Motronic ME 7.8, now with This system is designed to warn drivers modules activate the individual ignition 40 Mhz, as standard. Innovations here anywhere in the world, via an appro- coils directly. This has the following include increased computing power priate signal in the instrument cluster, advantages: and greater memory capacity. These of any emission- or engine-related enhancements are required to facilitate faults. Each system is fully compliant • High level of ignition safety the following additional functions: with all national legislation. • Minimum electromagnetic interference with other electronic components • Sport Chrono Package • No requirement for ignition cables and • OBD enhancement distributors and therefore elimination • Infinite control of radiator fans of the problems associated with them • Additional intake-manifold flap for distribution pipe

Communication with the other drive controllers (PSM, Tiptronic S) takes place via the CAN bus (CAN = Con- troller Area Network), a bi-directional data bus that enables an intensive exchange of data without placing an excessive burden on the system.

Figure 25: Motronic ME 7.8/40

24 2.9 Exhaust system

The two new Boxster models are equipped with a totally new exhaust system. It features larger cross sections for a lower exhaust backpressure, which has a positive effect on performance. The use of thin-wall technology for the pipes, catalytic converters (wall thickness of 1.2mm/0.05 in instead of 1.5 mm/0.06 in) and silencers (double wall technology with 2 x 0.5 mm/ 0.02 in instead of 2 x 0.75 mm/0.03 in) has permitted a reduction in weight of approx. 4.15 kg for the new exhaust systems. Figure 26: Exhaust system of the Boxster

Comfort has been increased through the use of Stop Shock® elements. emission levels even without additional approx. 75 mm/2.96 in. The down- These heat-resistant damping elements premixing in a sophisticated high-per- stream main catalytic converter, located between the exhaust system formance. which has been integrated in the main and the engine damp all drive-related silencer for reasons of compactness, vibrations (e.g. idle, component and The use of the latest catalytic converter has a diameter of 118 mm/4.45 in and engine vibrations), resulting in very little technology with pre-catalytic and main a length of 90 mm/3.55 in. vibration when the engine is running. catalytic converters ensures the best The Stop Shock® elements even reduce possible emission control values (EU 4). The use of ceramic mat coverings to vibrations on unfavourable road insulate the exhaust pipe restricts the surfaces caused by the inherent lower To ensure quick heating and hence amount of heat radiated to the luggage torsional rigidity of cabriolets/roadsters. quick conversion of pollutants (the compartment and reduces the re- operating temperature range for catalyt- sponse time of the main catalytic In the case of the 2.7 litre engine, ic converters starts at around 300 °C/ converters. the standard manifold of the 2.7 litre 572°F), the pre-catalytic converter is engine from the previous model which relatively small in size with a diameter of was tailored to the engine torque and approx. 102 mm/4.02 in and a length of performance characteristics has been adapted to the new exhaust system. The Boxster S uses a high-performance manifold which facilitates an improved gas cycle for significantly higher output. It also ensures better mixing and hence preconditioning of the raw emissions before they are converted in the catalytic converter. The raw emissions from the 2.7 litre engine are lower due to the smaller displacement which means that a standard manifold can deliver the required exhaust Figure 27: Standard manifold (Boxster) Figure 28: High-performance manifold (Boxster S)

25 The Boxster uses an oxygen sensor with a continuous-measurement function to ensure compliance with the exhaust emission standard EU 4. In contrast to the standard oxygen sensor which only indicates whether the engine mixture is lean or rich, the continuous sensor measures the exact richness or leanness of the mixture.

This additional information means that Figure 29: Tailpipe of the Boxster Figure 30: Tailpipe of the Boxster S the mixture can be controlled so as to ensure most effective operation of the catalytic converter. This happens even during rapid load changes.

As in MY04, there is no need for different silencer variants on the manual and Tiptronic S vehicles. However different size exhaust pipes are needed due to the different gas dynamics of the 2.7 litre and 3.2 litre engines.

The exhaust system of the new Boxster is complemented by an oval tailpipe with a new design. The distinguishing feature of the Boxster S is a dual tailpipe, also with a new style.

26 2.10 Sport Chrono functions reinforces the sporty character of the vehicle. A Sport Chrono Package – or in combination with PCM a Sport Chrono Pack- • More dynamic acceleration pedal age Plus – which helps to significantly characteristic increase driving pleasure is offered The electronic accelerator pedal as an option for the new Boxster models (electronic throttle) has been used (see also the section on Electrics). on the Boxster models since MY01. Pressing the “Sport” button activates With this system, the accelerator pedal the following three special engine position is converted into electrical functions: signals via potentiometers and forwar- ded as a control signal to the electro- • More sporty load cycle behaviour mechanical throttle via the Motronic Pressing the “Sport” button lends a control module. The “conversion” bet- sportier feel to the transitions between accelerator pedal angle and ween traction and overrun. This throttle angle, the so-called accelera- means that the load change which tion pedal characteristic, is per- occurs when accelerating or decelera- formed in the Motronic control unit. ting becomes more spontaneous and Sensitivity and hence driveability in dynamic. the lower speed and load range are factors here, as is even transmission • More abrupt high-speed cut-off across the entire pedal or throttle in all gears travel. To increase driving comfort a ‘gentler’ cut-off is generally used when accele- When the “Sport” button is active, a rating and reaching the speed limiter more dynamic accelerator pedal cha- setting. In the process the throttle is racteristic produces a more sponta- continuously closed when approaching neous engine response, underpin- the limit range for speed. This conve- ning the sporty character of this nient control operation prevents an function. This is achieved by means abrupt cessation of the acceleration of a “shorter conversion” between process by the high-speed cut-off, accelerator pedal travel and throttle but provides the driver with no useful angle. This means that the throttle is information for shifting up. opened further with the same accelerator pedal travel and selected Sport The Sport Chrono function facilitates Chrono function. additional acceleration potential through the use of an abrupt engine For safety’s sake, this Sport Chrono speed cut-off by switching off indivi- function is activated only after the dual cylinders (injection and ignition) in driver has released the accelerator a rotating fashion just shortly before pedal briefly or floored it. the engine speed limit. When the “Sport” button is pressed, the abrupt cut-off in active in all gears for the manual gearbox (without Sport Chrono function only in 1st and 2nd gears). This Sport Chrono function further

27 2.11 Change intervals

• Oil change from 20,000 km to 30,000 km / 12,000 miles to 20,000 miles

• Air filter change from 40,000 km to 60,000 km / 24,000 miles to 40,000 miles (modified filter element)

• Spark plugs from 80,000 km to 90,000 km / 48,000 miles to 60,000 miles (modified spark plug type)

Figure 31: Comparison of high-speed cut-off in Normal and Sport mode • Poly V-belt from 80,000 km to 90,000 km / 48,000 miles to 60,000 miles

Figure 32: Comparison of accelerator pedal characteristics

28 3 Transmission

The new Boxster models feature a revised (5-speed) and a new (6-speed) manual gearbox. The familiar 5-speed Tiptronic S is available as an option on the Boxster and Boxster S.

3.1 Manual gearbox

3.1.1 5-speed manual gearbox Figure 33: 5-speed manual gearbox Figure 34: 6-speed manual gearbox

The Boxster is equipped with the The 6-speed manual gearbox is also 3.1.4 Synchronisation revised 5-speed manual gearbox as available as an option for the Boxster standard. as a Sport package in combination with All of the gears in the 5-speed and The final drive ratio has been adapted PASM. It will appeal to those customers 6-speed manual gearboxes use syn- to the larger rear-wheel diameters. who are looking for an uncompromising, chronisers with a higher load-carry- A new synchronization system has very sporty drive. The combination of ing capacity (implemented as a model been introduced to increase shifting 6-speed gearbox and Porsche Active improvement on the 2.7 litre Boxster comfort. Suspension Management permits faster (986) in 11/2003). As on the new lap times, for example, when the vehicle Carrera the synchronisers for first The 5-speed manual gearbox has been is driven at the limits of its performance. and second gear have been given a specifically selected and tuned for wear-resistant carbon coating. use in the Boxster. The selected ratios, the increments of the gears and the low 3.1.3 Transmission ratios While in the Boxster synchronisation of weight of the gearbox permit outstand- 1st gear is now performed three times ing performance. Since the dynamic tire rolling circumfer- instead of once and twice instead of ence of the new vehicles was increased once for 2nd gear, synchronisation of by 5 % (to facilitate a 19-inch wheel), 1st and 2nd gears in the Boxster S 3.1.2 6-speed manual gearbox the vehicle ratio spread (transmission, is now performed three times instead axle transmission, wheel/tires) for the of twice. Third through sixth gears are The Boxster S is equipped with a newly new models had to be adapted to en- now synchronised twice instead of once. developed 6-speed manual gearbox sure attractive performance and high as standard. The adaptation of the driving dynamics. The benefit of multiple synchronisations gears, their increments and the ratio is also used in the new gearboxes to spread are geared to the high engine The rear-axle ratio on the 5-speed ensure a reduction in shift throw with performance of the Boxster S. gearbox has also been adapted. the same shifting forces (in the appro- The totally new concept ensures that All of the ratios for the new 6-speed priate gears). a damaged gearbox can be fully re- gearbox have been redesigned. These paired instead of having to be replaced designs result in a sporty setup for as was previously the case, which signifi- the new models and enables high per- cantly reduces the maintenance formance with optimum exploitation of costs. the engine torque and the maximum output.

29 Figure 35: Transmission ratio of the 5-speed manual gearbox

Figure 36: Transmission ratio of the 6-speed manual gearbox

30 3.1.5 Shifting and shift lever ratio 3.1.6 Transmission cooling

The proven cable-operated gearshift As with the manual gearboxes of the with two pull-push cables is used in the previous Boxster series, transmission new Boxster models also. cooling in the new models is also performed via a direct air-heat exchange A shift throw reduction of 26 % in the at the transmission surface (convection). 5-speed manual gearbox (standard on The surface is provided with cooling the Boxster) and 15 % in the 6-speed gills to this end. Cooling is supported manual gearbox (standard on the by effective air routing with a defined Figure 38: Tiptronic S selector lever Boxster S, optional on the Boxster) has air inlet on the front underbody panelling been achieved on the new Boxster mod- and a modified ventilation frame. 3.2 Tiptronic S els while retaining the same ergonomic characteristics by moving the deflection The tried-and-tested 5-speed Tiptronic point on the shift lever. The significant 3.1.7 Dual-mass flywheel and S transmission with further optimisations increase in the efficiency of the syn- clutch is available as an option on the new chronisations has allowed the shifting Boxster models. The torque and per- forces at the gearshift to be kept the The proven double-mass flywheels for formance potential of this gearbox same or even reduced. On top of this damping vibrations in the transmission covers even the higher requirements of play in the shift module under the shift caused by the engine have been re- the new engines. lever has been reduced, resulting in tained in their familiar design for the a more precise gearshifting gate. new models. The new Tiptronic S system has been Both Boxster models use the same shift The new engines use the familiar single- modified and adapted in comparison console. plate dry clutches. In accordance with with the MY04 version. the change of materials in mid-2003, the clutch linings are lead-free. The contact pressure in the Boxster S has been adapted to the engine torque and the hub of the clutch plate adapted to the new transmission input shaft. However the Boxster S now also uses a plastic plate to optimise friction when the clutch is actuated. These measures have increased the durability of the clutch.

Figure 37: Shift lever of the Boxster

31 The constant ratio (spur-gear drive + axle drive) has had to be adapted (by 8.8 % on the Boxster and 4.8 % on the Boxster S) to compensate the 5 % increase in the tire diameter. This sporty ratio spread enables the new models with Tiptronic S gearbox to reach their top speed quickly. The shift pressures have been adjusted to adapt to the transmission of the higher power and to retain the high level of shifting comfort. The setup has been further optimised with regard to uphill and downhill recognition (optimum performance is

Figure 39: Tiptronic S gearshift strategies ensured by driving as long as possible in low gears when going uphill or downhill) and the height function. The shift points for sporty driving have also been optimised. These improvements have enabled the automatic oil change interval to be extended to 180,000 km / 120,000 miles.

Figure 40: Boxster Tiptronic S ratios

Figure 41: Boxster S Tiptronic S ratios

32 4 Chassis In addition to the basic chassis,a strength and low component weight further option is offered for the Boxster were important criteria in the redesign of The main objective in the tuning of models: the PASM chassis (Porsche the components. As part of this, the the chassis has been to increase per- Active Suspension Management, incl. track width of the front axle has been formance, i.e. to directly translate lowering by 10 mm/0.39 in). This chas- increased by up to 35 mm/1.38 in in the increased engine output into faster sis combines variable characteristics comparison with the previous model de- lap times. and sporty characteristics. pending on the wheel/tire combination. The chassis of the new Boxster models This measure, together with the larger have the same design as the previous and wider tires, further reduces the models, but have been significantly re- 4.1 Front axle tendency of the body to tilt, particu- vised and reworked. A wider track, new larly when the vehicle’s performance is kinematic and elastokinematic design, The front axle of the new Boxster mod- exploited to the full, thereby improving new and larger wheel/tire combinations els is based on the proven concept support against transverse forces. The and the reduced weight of individual from the previous model, however many routing of cooling air to the brake sys- components, among other improve- of its details have been adapted to tem and the driving comfort has also ments, give the new Boxster models a significantly higher performance been improved. more generous safety reserves and potential. much sportier performance, without affecting driving comfort. For example, the wheel suspension still comprises a spring strut and a de- The improved performance of the tached trailing link/control arm new tire generation in particular en- arrangement. This concept ensures ables considerably higher forces to be very precise wheel guidance in com- transmitted to the street with the new bination with a high degree of rolling Boxster. This results in increased re- comfort. quirements for the chassis as a whole Some components of the front axle and particularly for the axle compo- have been redeveloped to take account nents. of the increased performance and to further increase crash safety. High

Figure 42: Boxster S chassis (with PASM)

33 The following modifications have been • Wheel bearing: • Trailing link/control arm mount: made: Reinforced wheel bearings with a The previous conventional rubber- larger diameter are used in order to bonded bushing which connected the • Front-axle cross member: reliably transmit the increased transfer trailing link and control arm has been The front-axle cross member has been forces generated by the higher per- replaced by a hydraulic mount to newly developed for the Boxster. The formance. They offer the major advan- increase driving comfort. This new design has been completely re- tage of firmer wheel guidance in the mount ensures that vibrations caused vised based on crash requirements, face of lateral forces and therefore by disruptive forces (disruptions as a particularly in an offset crash. At the contribute to the extremely precise result of unevenness on the road, same time, the cross member has driving behaviour. wheel imbalances) are suppressed been widened by 15 mm/0.59 in In addition, the wheel bearings now more effectively and therefore fewer on each side. This has allowed the also adopt the function of the former disruptive vibrations are transmitted to axle attachment points to be moved ABS pulse rings. They are fitted with the steering. Steering precision re- out further, which results in an in- a so-called multipole seal. This is a mains at the highest level. crease in track width of 24 to seal with a magnetised layer, which 35 mm/0.95 to 1.38 in depending generates the signal impulses for the on the wheel/tire combination. ABS rpm sensors.

• Pivot bearing: The design of the front-axle pivot bearing has been modified to optimise the supply of cooling air to the brake. This measure, together with an enlarged brake air deflector which clips into the trailing link, has resulted in an improvement in brake cooling. The fact that the front-axle pivot bearing is now cast as a hollow instead of a solid has enabled both a reduction in weight and an increase in component strength.

Figure 43: Boxster front axle

34 4.2 Steering system

The new Boxster generation uses hy- draulically-assisted rack-and-pinion steering with variable steering ratio. The idea behind using this steering system has been to further increase the agility of the vehicle, particularly on routes with a lot of corners, while at the same time retaining the high level of driving stability at very high speeds.

The ratio around the center position, i.e. for small movements of the steering wheel, remains similar to that of the Figure 44: Steering previous model. As a result, the vehicle remains very smooth at high speeds. adjustment, the steering wheel is now al- Taking into consideration the latest The steering ratio becomes increasing- so height-adjustable by 40 mm/1.58 in crash requirements, all rotating com- ly more direct with steering wheel (measured in extended state). This pro- ponents of the steering system (includ- movements of more than 30° to vides the driver with considerably ing the upper and lower steering shaft) 240° (approx. 1/8 to 3/4 steering more options for adjusting the steering are now made from aluminium to opti- wheel revolution). This is achieved wheel according to his or her specific re- mise weight. The adjustment mecha- through a gear rack with variable tooth quirements, thereby ensuring that an op- nism also comprises magnesium and pitch. The steering wheel revolutions timum seat position is found. It also aluminium die-cast. This consistent from stop to stop have thus been re- makes it easier for taller drivers to get use of light-weight construction tech- duced from 2.98 on the previous model in and out. The lever for locking the niques has allowed the overall weight of to 2.62 on the new model. This results steering wheel in the selected position is the steering system to be kept at a in significantly greater agility when located underneath the steering column. good level, despite the additional adjust- driving on routes with a lot of corners ment mechanism. and particularly in tight corners. For ex- The steering lock is now electrical. ample, it also improves handling when This component is part of the networked turning in city traffic. In this case, the immobiliser system and offers in- steering response is much more sponta- creased anti-theft protection. It has neous. Parking is also easier since also increased convenience since the the greater the steering wheel angle rel- electric steering wheel lock detects ative to the steering around the zero po- whether the steering cable is strained sition, the harder the wheels turn. The when the wheel is locked. When the igni- turning circle of 11.1 m/36.4 ft is al- tion key is turned in the lock, a possible so similar to the previous model (10.9 strain is detected and reported to the m), despite the larger wheels which re- driver via a text message (“Unlock steer- quire more space inside the wheel housing”) in the display in the instrument ings. cluster. The driver can then respond Figure 44: Steering by turning the steering wheel slightly to release the strain. This prevents the A further new feature is manual steer- ignition key “sticking” when turned in ing wheel height adjustment. In addi- the lock with locked steering. tion to the existing 40 mm/1.58 in reach

35 4.3 Rear axle • Wheel carrier: The aluminium wheel carrier has also Both the rear axle and the front axle of been newly developed. The swing the new Boxster models are based on lever has been enlarged to increase the proven concept from the previous the toe-in rigidity, which enables model, however many of its details more precise wheel guidance. have been adapted to a significantly The camber thrust rate has also been- higher performance potential. increased by 30 %. One of the main The main objective of redesigning the development goals in relation to the rear axle components has been to in- wheel carrier has been weight reduc- crease transverse rigidity while at the tion. For that reason the wheel carrier same time reducing weight through is now hollow instead of solid, which the consistent use of light-weight con- reduces its weight by 20 % or struction techniques. The rigidity of in- 1.2 kg/2.2 lbs. dividual axle components has also been increased. This, together with the new • Suspension strut: tire generation, has enabled higher The twin-pipe damper features a lateral accelerations overall to be larger external pipe than the previous achieved. It has also increased driving damper. This, together with a larger comfort at the rear axle. guidance length for the damper, has permitted an improvement in The following component modifica- the camber thrust rate and the tions have been made: response behaviour.

• Subframe: The side section of the support is now made from die-cast aluminium and is consequently lighter (the reduction is weight is approx. 1 kg/2.2 lbs). The kinematics in combination with the tie rod position have also been optimised to facilitate the responsiveness of the chassis and more agile performance. The installation of a new diagonal strut made from aluminium extruded profile, which is closed underneath unlike on the previous model, improves the torsional rigi-

dity and the Cd /CA value at the rear axle. The cross member panel is made from aluminium for reasons of weight savings and is designed to facilitate better ventilation of the transmission.

Figure 45: Boxster rear axle

36 4.4 Brake system

4.4.1 Boxster operating brake

The basic principles of the powerful brake system have been retained from the previous Boxster model, however it has been further improved to take account of the technical advances and increased performance of the new models.

Black anodised aluminium 4-piston monobloc fixed calipers are used on all four wheels. The internally ventilated Figure 46: Boxster brake system (rear axle) Figure 47: Boxster S brake system (rear axle) brake discs are now perforated and their diameter at the rear axle has The Boxster engines employ a mechan- Ventilation has been further im- been increased by 7 mm/0.28 in in ical vacuum pump instead of a con- proved in comparison with the previous comparison with the previous model. ventional sucking jet pump to provide model. The new design of the front- the vacuum for the brake booster. axle wheel carrier, a 30 % larger The boost factor in the brake booster The pump is driven in tandem configura- brake air deflector and an optimised has also been increased by 17 %. tion together with the oil extraction underbody lining result in more air be- This means that less actuating force pump of the right cylinder head (bank 2, ing directed to the brake discs for more is needed when braking and that the cylinder 4) by the exhaust camshaft of effective cooling. The ventilation ducts response behaviour is even more the right cylinder bank (bank 2, cylinder and the hole pattern boost this effect. direct than before. 4–6). This design enables a high and constant level of vacuum supply and The result is a very stable brake subsequent effective brake boost even system with a spontaneous response when the most unfavourable under- and low operating forces, whose lying conditions apply, e.g. low exter- performance significantly surpasses the nal air pressure at high altitudes, and in vehicle acceleration values, i.e. the maxi- highly dynamic driving involving a high mum braking power is a multiple of the proportion of full-load operation, e.g. on maximum drive power. race tracks.

37 4.4.2 Boxster S operating brake 4.4.3 Porsche Ceramic The familiar evolute shape of the inner Composite Brake (PCCB) cooling ducts has been modified to Due to its increased performance, the increase the ventilation effect of the Boxster S uses a brake system with The Porsche Ceramic Composite Brake rotating disc. This results in even higher extra power boosting. (PCCB) is available as an option for the air throughput and thus even better Essentially, this is based on the brake first time for the new Boxster S. brake cooling. system of the new 911 Carrera. The PCCB provides a further in- Abrasion resistance, particularly under The front axle is fitted with power- creased performance in comparison high loads, has been significantly in- boosted aluminium 4-piston monobloc with the already excellent standard brake creased by optimising the fibre rein- fixed calipers that are also larger system of the Boxster S. The main forcement. than on the basic Boxster model. The advantages of the PCCB are: calipers at the front and rear axle are For the customer these improvements painted red to distinguish them from • Faster response mean increased performance and a the calipers on the basic model. much longer service life of the brake • Very high fading stability thanks to system. Combined with the efficient ventilation consistently high friction values of the brakes (see the section on the Boxster operating brake), the generously • Large safety reserves, even under sized brake system of the Boxster S, extreme loads with 4 mm/0.16 in thicker brake discs as well as 20 mm/0.79 in larger brake • Reduction in the rotating mass and discs at the front, provides excellent unsprung weight compared to grey stability and constantly high decelera- cast iron brake discs of the same type tion values. This effect is also support- and size ed by the 17 % increase in the boost factor in the brake booster. The brake • Very long service life according to system is perfectly matched to the respective conditions of use Boxster S in every regard and thereby makes an important contribution to the • Absolutely corrosion-free excellent performance of the vehicle. The PCCB is the result of years of experience on the part of Porsche as a technological leader in the field of brake systems. The ceramic brake discs used in the Boxster S have been further optimised in comparison with the previous version used in the 911 (996). The most important changes concern the shape of the inner cooling ducts and the material composition.

38 The ceramic brake discs with a di- A further decisive advantage of the a grey cast iron brake system – will ameter of 350 mm/13.79 in together PCCB is its long service life. Abrasion increase sharply. After use on the with the newly developed brake pads of the ceramic brake disc is exceptional- circuit, as in the case of high-per- ensure extremely high and, above all, ly low due to the disc’s extreme surface formance steel brakes, the brakes will constant friction values during decelera- hardness in comparison with a grey cast need to be checked by a mechanic tion. Assisted by aluminium 6-piston iron brake disc. The new brake pads and components may need to be fixed calipers at the front axle and alu- also have a long service life. However replaced. minium 4-piston fixed calipers at the wear on the components of the brake rear axle – both in monobloc design – system, particularly pads and brake As a technical innovation, the PCCB the braking response is even faster discs, is very much dependent on how offers a high level of quality, safety and more precise with considerably the vehicle is driven and the conditions and driving pleasure, even under reduced pedal force requirement. of use and cannot therefore be ex- extreme driving conditions, thanks to pressed in the form of a guaranteed its characteristics of reducing the The PCCB sets definite standards in the mileage. unsprung weight, its consistently high areas of weight, fading stability and friction values and its low wear. responsiveness. As a result of its great fading stability and particularly its very low weight, Like the grey cast iron brake discs of the PCCB is ideal for use at high tem- the Boxster/Boxster S, the ceramic disc peratures and even for driving on the is perforated and internally ventilated but circuit. It is on the circuit or as a result is only about half the weight of a grey of similar extreme driving on normal cast iron brake disc of the same type roads that wear on the brake, and in and size. Since this weight reduction particular on the brake pads – as with refers to the unsprung weight, as well as having a positive effect on the power- to-weight ratio and fuel consumption it actually improves driving behaviour with regard to handling, road holding and comfort.

The PCCB retains its excellent fading stability even under extreme loads to offer a high level of safety, particularly when braking from high speeds. The new brake system also exhibits excellent characteristics in relation to braking response with considerably reduced pedal force requirement.

Figure 48: Porsche Ceramic Composite Brake (PCCB) (front axle)

39 Figure 49: Boxster

Boxster Boxster S PCCB Fixed-caliper brake with … pistons 4/4 4/4 6/4 FA/RA

Pad area per brake pad (cm2/sq in) 53.5/48 / 8.3/7.4 62/48 / 9.6/7.4 112/62 / 17.4/9.6 FA/RA

Brake discs: 298 x 24 / 299 x 20 / 318 x 28 / 299 x 24 / 350 x 34 / 350 x 28 / (Internally ventilated and perforated) 11.73 x 0.94 / 12.52 x 1.1 / 13.78 x 1.34 / Diameter x width (mm/in) FA/RA 11.77 x 0.79 11.77 x 0.94 13.78 x 1.10

Table 5: Overview of brake systems

40 4.4.4 Parking brake

The main components of the parking brake have been retained from the previous model. It is integrated into the brake disc at the rear and is actuated via a control cable. The Boxster and the Boxster S now have the same parking brake which is larger than on the previous model.

A new feature – as on the 911 Carrera/911 Carrera S – is the automatic control cable readjustment. The inevitable lengthening or slackening of the brake cable over time previously had to be corrected as part of the after-sales service. The control cable length compensation now takes place automatically, which reduces the maintenance involved and lowers costs. Readjustment of the brake in case of pad wear must be carried out as part of the normal after-sales service as before.

The handbrake lever has been modified to match the new interior design and as before is made of extremely light pressure-cast magnesium.

41 4.5 Porsche Active Suspension The PASM system comprises the follow- Management (PASM) ing components:

A variable damping system with ac- • Four map-controlled dampers with tive damper force regulation is avail- continuously adjustable damping force able as an option for the first time for (each with one bypass valve) the Boxster series. The newly developed “Porsche Active Suspension Manage- • PASM control module ment” (PASM) helps to do justice to the demands for a modern sports car chas- Figure 50: PASM button in the center console • Two acceleration sensors for detect- sis. The aim was to maintain the high ing vertical movement of the body comfort level of the standard chassis excellent comfort as the standard (one at the damper dome at the front while increasing performance at the chassis, while Sport mode provides right and one at the rear left). Further same time. the sportiness and agility of a sports signals such as lateral acceleration, chassis. In conjunction with specially steering angle, travel speed, brake This conflict was resolved with the developed software modules, the pressure and engine torque are read PASM, which combines two chassis in PASM ensures excellent performance in via the CAN bus. one: one with equal measures of sporti- and even greater driving safety in ness and comfort and one entirely extreme situations. • One button for selecting the pro- dedicated to sportiness for extreme gramme (Normal or Sport) driving. PASM makes two programmes The function light in the button comes available to the driver: “Normal“ and on with the Sport setting. At the same “Sport“, both are selected via a button time a damper icon appears in the in- on the center console. strument cluster display together with the text “PASM Sport”. When the Nor- In comparison with the standard chassis, mal programme is re-activated, the the vehicle with the PASM chassis lies damper icon appears accompanied by 10 mm/0.39 in lower. the text “PASM Normal”. The text and icon remain visible for 4 seconds and Normal mode (the basic setting when then automatically disappear. the vehicle starts) provides the same

Figure 51: PASM control module

42 4.5.1 How PASM works

PASM selects the required damper hardness for each individual wheel from a precisely co-ordinated map in both the Normal and the Sport programme. The possible damper settings range from comfortable to decidedly sporty. Both programmes, which overlap slightly in some areas, are additionally superimposed with five special software modules to provide the optimum damper settings for every driving condition.

The system automatically selects the Figure 52: PASM damper characteristics in comparison with the standard chassis appropriate damper hardness based on the PASM programme selected and between the Normal and Sport maps the driving condition identified. allows the ideal damper setting to always be selected. The customer gets The Normal programme offers com- an “active sports chassis” which fortable settings with low damper automatically responds to the actual forces. Special control algorithms in the road surface and switches from a PASM software modules enable the hard, sporty damping setting to a com- chassis to offer greater active driving fortable range as necessary. PASM safety in extreme driving situations, switches back to the original character- even with the Normal programme. To in- istic as soon as the road surface is crease driving safety at higher speeds, smooth enough. the dampers are automatically switched to a harder damper setting as speed increases.

The dampers switch to a hard characteristic when Sport mode is activated. This offers superior agility and excellent steering precision on uneven surfaces. If the system detects an uneven driving surface in Sport mode, it immediately switches to a softer characteristic to improve contact with the road surface. PASM selects the optimum damper setting for this driving condition from the Sport map. Since extremely hard damping is not always the ideal solution in every driving situation (depending on the driving surface, the vehicle may start to bounce or shift), the overlap

43 4.5.2 Software modules for special control algorithms

PASM contains five software modules which are superimposed over Normal and Sport mode:

• Lane-change module: The damper forces at both axles are immediately increased in response to rapid steering movements, for example sudden evasive manoeuvres. This reduces body tilt and instability, thereby significantly improv-

ing vehicle control even in extreme Figure 53: Boxster situations. control and lateral-acceleration dam- • Load-change module: •Vertical-control module: ping values is set. This happens if, for The damper characteristics for In the Normal programme, the dam- example, the damping in the Sport the front and rear axle are indivi- per force is increased as soon as programme was previously decreased dually switched when accelerating the vertical movement of the body, for by the vertical-control module. heavily, releasing the throttle or example when driving over uneven sur- changing lanes. In Normal mode, the faces, rises over a specific threshold • Brake module: dampers are briefly switched to a value. This prevents body instability PASM switches to harder damping at harder damping setting in these driving and therefore woolly driving beha- the start of a braking operation to conditions. This avoids excessive viour. reduce vehicle nose-dive when bra- lifting or diving at the front of the king (brake driving). The advantage vehicle (“pitching”). In Sport mode, a In the Sport programme, the damp- of this is that it enables higher brake softer damper characteristic is briefly ing is slightly reduced automatically forces to be transmitted to the road selected if necessary to improve as body movements increased. This faster. It switches back to a softer traction when accelerating, particular- results in improved contact between setting (this setting is different for ly on uneven surfaces. the road and the wheels and a the front and rear axle) after a noticeable increase in comfort. specific amount of time. The result is improved road contact, and thus a • Lateral-acceleration module: shorter braking distance, particularly If specific, speed-dependent thresholds when braking on uneven surfaces. for lateral acceleration are exceeded when cornering in the Normal programme, the damper force is increased by different, defined amounts for each side of the vehicle. This prevents vehicle instability and significantly increases driving precision. In the event of large vertical movements and high lateral acceleration coinciding, the higher of the vertical-

44 4.5.3 How the PASM map- The damping effect is provided by the oil In the event of a system failure, the controlled dampers work in the damper flowing through an open- valve automatically closes. PASM is then ing when the vehicle moves. The smaller in the hardest damper setting and thus Conventional shock absorbers can- (larger) the opening cross section, the the safest mode from a driving dynamics not actively adapt to changing driving harder (softer) the damping. point of view (fail-safe principle). conditions. As such, the damper design always represents a compromise With the PASM map-controlled between comfort, sportiness and damper, the oil can flow through an loading state. Neither can they take electrically actuated hydraulic bypass into consideration the individual driving valve as well as through the fixed style. opening in the main piston. The flow can be increased or reduced by opening and closing the valve via a slide, producing continuous adjustment of the damper force.

Extension Extension stage, stage, bypass bypass valve open, valve closed, comfortable sporty shock- shock- absorber absorber charac- charac- teristic teristic

Compres- Compres- sion stage, sion stage, bypass bypass valve open, valve closed, comfortable sporty shock- shock- absorber absorber charac- charac- teristic teristic

Figure 54: How the PASM dampers work

45 4.6 Porsche Stability Management (PSM)

With the introduction of the new Boxster series, the Porsche Stability Manage- ment (PSM) has now been allocated as standard.

It includes the familiar functions ABS (anti-blocking system), ASR (anti-slip regulation), EDTC (engine drag torque control) and ABD (automatic brake differential). It offers very high active driving safety in manoeuvres involving extreme longitudinal and lateral Figure 55: Boxster S acceleration without affecting the typical Porsche agility and associated • The steering angle sensor previously The system switch-off is indicated to the driving pleasure. mounted on the steering system has driver via the PSM function light in been replaced by the one from the the instrument cluster and the indica- The objectives in the development of Cayenne for the sake of standardisa- tor light in the PSM switch. A gong the PSM for the new Boxster/Boxster S tion (Porsche carry over parts con- also sounds and the text “PSM OFF” were as follows: cept). The new steering angle sensor appears in the multi-function display is located in the steering column in the instrument cluster. The lights go • The new PSM helps to reduce brak- module. The ABS wheel speeds are out and the text message “PSM ON” ing distance, thereby securing now determined using multipole seals appears when PSM is switched back on. Porsche’s position as a leader in the directly at the wheel bearings instead The text messages are displayed for field of brake technology. of conventional impulse rotors. 10 seconds, however they can be acknowledged before this using the • The driver is to be allowed more PSM can be switched off via a switch on-board computer lever. freedom before PSM intervenes than in the center console (PSM Off switch) on the previous system, in particular to increase driving pleasure. As before, when PSM is switched off. To this end ABD remains active when PSM is the system, which is still activated by switched off to ensure outstanding trac- pressing the brake, is only to be acti- tion when accelerating out of corners vated in real emergency situations. and on surfaces with different friction values. • At the same time, the control comfort has been noticeably improved and the PSM system’s weight reduced.

Figure 56: PSM OFF button

46 Limits of PSM: • Reduction of braking distances: While PSM is designed to maintain driv- A reduction in braking distance has ing stability and offer a significant im- been achieved through the higher provement in driving safety, it is by no control quality of the PSM and the means capable of changing the laws optimised ABS setup in combination of physics. In other words, the driver with the new tires. alone is solely responsible for all The valves used in the previous PSM manoeuvres, even when using PSM. to regulate pressure in the ABS system were conventional switching valves which enabled regulation in 4.6.1 Properties of the enhanced defined, although not very precise, PSM pressure stages. The new continuously adjustable linear solenoid The revised and newly adapted valves used allow virtually infinite PSM is characterised by the following and thus more precise regulation of features: the brake pressure. The result is a signification reduction in braking •More agile setup/modified intervention distance. thresholds: PSM in the new Boxster offers more • Increase in comfort: individual freedom than before Control comfort has been notice- thanks to the further development ably improved. PSM interventions of its function logic. PSM deliberate- with the new system are noticeably ly waits until the last moment to inter- smoother and more harmonious vene, particularly at low speeds of up thanks to enhanced control algorithms. to around 70 km/h / 45 mph, enab- Brake pedal pulsation with ABS has ling more agile driving behaviour in been reduced through the use of the tight corners. Even when switched off new linear solenoid valves. PSM con- the driver is afforded more freedom trol noises have also been signifi- than was previously the case. cantly reduced in comparison with A new feature is that when PSM is the previous PSM. deactivated, control interventions by the system will only be executed • Reduction in weight: when heavy pressure is applied to The introduction of the new PSM has the brake pedal. To do this, ABS permitted a significant reduction in control must be active at one front the system weight. As a result, the wheel at least. This affords the sporty hydraulic pre-charge pump including driver more scope since gentle pres- bracket and hydraulic connecting line sure on the brake pedal will not result is no longer required. The new PSM in PSM intervention; the driver can pump can now ensure the dynamics therefore brake into corners without required for the entire system (brake the system intervening. pressure build-up for PSM interven- Drivers tend to apply more pressure tions) on its own without pre-charging, to the brake in emergency situations which has allowed the system weight which means that PSM can provide to be reduced by 25 % (3.0 kg/ assistance when it is needed. 6.6 lbs).

47 4.6.2 Sport mode acceleration. Increasing the ABS inter- In line with Porsche’s safety philoso- (Sport Chrono function) vention thresholds permits more neu- phy, PSM remains available in the back- tral braking into corners. In addition, ground even in combination with Sport A special Sport mode is available for PSM permits more engine drag torque mode and can be activated by pressing the first time in PSM as part of the op- when lifting the throttle. The result is a the brake pedal. When Sport mode is ac- tional Sport Chrono Package Plus. more distinctive load change so that tive and PSM is switched off, greater This Sport mode facilitates a sportier the vehicle can be positioned more easi- force must be applied to the brake pedal drive and increases driving pleasure ly in corners, thereby permitting more to activate it. This allows the driver to by allowing the driver to switch functions dynamic steering. move the vehicle with far greater overall in PSM via the Sport button. agility in extreme driving situations than The driver can increase vehicle agility when PSM is switched off and Sport An increase in the minimum triggering even more by switching off PSM mode is not active. level for ASR in Sport mode affords the when Sport mode is active. vehicle more longitudinal dynamism The ABS setup has been made even when accelerating out of corners. As a sportier, a refinement that is particular- result greater slip is permissible at the ly noticeable when braking into corners. drive wheels during throttling and notice- The new, less stability-oriented ABS set- able rear drift, particularly on surfaces up permits more agile behaviour com- with low coefficient values, is permissi- bined with higher braking deceleration ble without jeopardizing driving safety. when cornering. The thresholds for PSM intervention Load-change responses are also have also been increased. This enables moderated less so that the vehicle can a greater deviation between the desired be “steered” more using the accelerator and actual direction of movement of the pedal. ABD is retained in its customary vehicle before PSM intervenes. This form for optimum traction. makes the vehicle more agile in manoeuvres involving extreme lateral

Figure 57: Boxster

48 PSM on PSM off

Sport mode PSM is active, PSM is deactivated, off basic condition when vehicle starts but can be re-activated by applying the brakes, PSM intervention is permitted if the ABS control threshold is exceeded at one front wheel at least

Sport mode PSM is active PSM is deactivated, on with the following Sport functions: but will be re-activated if the brakes are applied with force, PSM intervention is permitted if the ABS control • More longitudinal dynamism thanks to threshold is exceeded at both front wheels; the overall later intervention of ASR effect is one of increased sportiness • More lateral dynamism thanks to • Even more agility when braking into corners thanks later intervention of PSM to a less stability-oriented ABS setup which allows • Greater agility when braking into greater deceleration when cornering corners thanks to later intervention AGILITY• Significantly reduced load-change compensation for of ABS more dynamism when steering into corners • Slightly reduced load-change compensation for dynamism when steering into corners

Table 6: Increasing vehicle agility using PSM and Sport mode

49 4.7 Wheels and tires Three 19-inch design variants are offered as an option for both the 4.7.1 Wheels Boxster and the Boxster S. They have a size of 8J x 19 at the front axle and To coincide with the introduction of 9.5J x 19 at the rear axle: the new Boxster series the wheels have been restyled and made larger. The 19-inch Carrera S wheel is The larger wheel/tire dimensions derived from the standard Carrera S have been specially developed to fur- wheel and combines the Carrera design ther increase performance. The with Boxster-specific dimensions. wheels have been designed to appear flush with the car’s skin. The 19-inch SportDesign wheel is characterised by 15 fine-mesh spokes. For the first time all wheels have been The delicate styling delivers a striking manufactured using the flow-forming race-car look. process. This is a light-weight construction technology which reduces The 19-inch Carrera Classic wheel weight by rolling out the rim well. in turn is an elegant wheel. Its 5-spoke design is very slender and allows for a The Boxster now has a 17-inch wheel good view of the brake. This deliberately (previous Boxster model: basic 16-inch reveals the technology for all to see. wheel) with a size of 6.5J x 17 at the front axle and 8J x 17 at the rear axle as standard. The 5-double-spoke design lends the 17-inch Boxster wheel a very dynamic appearance.

The Boxster S is fitted with an 18-inch wheel as standard. The 18-inch Boxster S wheel has a size of 8J x 18 at the front axle and 9J x 18 at the rear axle. Its appearance is characterised by 5 very striking spokes which split into 2 narrow ribs at the end. Figure 58: 17-inch Boxster II wheel Figure 59: 18-inch Boxster S wheel

Figure 60: 19-inch Carrera S wheel Figure 61: 19-inch SportDesign wheel Figure 62: 19-inch Carrera Classic wheel

50 4.7.2 Tires

A new tire generation with larger rolling circumferences has been developed for the new Boxster series to complement the new wheels. The main objective in the redevelopment of the tires has been to achieve a significant improvement in performance – in short to address the sportier orientation of the Boxster and Boxster S. The tire circumference has been increased by 2.5 % at the front axle and 5 % at the rear axle. The larger rolling circumference increases the side-wall height/tire width ratio in comparison with Figure 63: Tire characteristics the previous model to guarantee an appropriate level of comfort despite the These improvements have primarily larger wheels. The tire widths at the been facilitated through the special tire rear axle have been increased to rubber mixture and the new tread 235 mm/9.26 in with the 17-inch tire design. However the choice of 17-inch, for the Boxster/Boxster S (previous 18-inch or 19-inch tire (Boxster) and model: 225 mm/8.87 in with 16-inch 18-inch or 19-inch tire (Boxster S) tire) and to 265 mm/10.44 in with the also delivers noticeably different per- 18-inch tire for the Boxster S (previous formance. model: 255 mm/10.05 in with 17-inch tire), while the tire widths at the front The omission of the 16/17-inch basic axle have been increased to 235 mm/ tires from the previous model means 9.26 in with the 18-inch tire for the that the new 17/18-inch summer Boxster S (previous model: tires now fulfil the role of the comfort- 205 mm/8.08 in with 17-inch tire). oriented tire. They offer a high level of sporty handling with very good driving The new tires have permitted a further comfort. The 19-inch summer tire noticeable increase in the amount of replaces the previous 18-inch tires force that can be transmitted both in with respect to sportiness and agility. the longitudinal and transverse direc- It offers a substantial increase in per- tion. This results in a high level of formance. agility and, at the same time, driving safety. The new tires, and particularly the 19-inch tires, have permitted a reduction in the braking distance.

51 4.7.3 Run-flat systems 4.8 Tire pressure monitoring system (RDK) The new Boxster and Boxster S do not have a spare wheel or a jack. A tire pressure monitoring system Instead, they are equipped with a tire (RDK) will be available as an option sealing compound and an electronic for the new Boxster series from MY 06. compressor. The RDK offers a significant improve- The introduction of the tire sealing com- ment in safety by continuously pound means that most damage can monitoring the air pressure of each be handled without having to go to the tire. The system gives the driver an ear- trouble of changing the damaged tire on ly warning of a pressure deficiency the spot. Small punctures such as within the tire, creeping reduction in caused by a nail or screw can be tem- pressure caused by diffusion or even porarily repaired by filling them with the sudden pressure loss in the tires. It also tire sealing compound, thereby enabling does away with the need for regular, the vehicle to be driven at a reduced frequently very tedious, air pressure speed (up to max. 80 km/h / 50 mph) checks. A further advantage is that hav- to the nearest Porsche Centre without ing the correct air pressure cuts down damaging the wheel in question or the on tire wear (a deficiency in pressure vehicle. of 0.3 bar/4.41 psi can reduce the serv- The omission of the spare wheel and ice life of tires by up to 25 %). A defi- jack has permitted a reduction in ciency in pressure also results in in- weight of around 10 kg/22 lbs. creased fuel consumption.

A 17-inch spare wheel with a size of 185/60 is used in countries where the legislation generally stipulates the provision of a spare wheel (e.g. Brazil, Israel, Saudi Arabia and Virgin Islands). It is stored in the rear luggage compartment. The spare wheel should only be used to continue driving to the nearest Porsche Centre at a maximum speed of 80 km/h / 50 mph.

52 5 Body

5.1 Body-in-white without doors and handles

The Porsche body-in-white is still executed as a light-weight design with high strength and ultra high strength steels. This concept ensures excellent rigidity and passive safety combined with low weight. The purpose of redesigning the body-in-white of the new Boxster series was to increase torsional and flexural rigidity in compari- Figure 64: Body-in-white son with the previous model and also to further improve crash safety in a The spot welding/bonding method The tailored blanks technology used frontal or offset crash (frontal crash with used to join the side sections and the in the rear side members of the previous head-on collision on one side of the vehi- floor assembly and the redesign of the 986 model also feature in the front side cle). A further aim was to provide the joint areas (A-pillar/sills) has further members of the 987. Tailored blanks vehicle occupants, and particularly taller increased the torsional and flexural are pressed panels in which sheet steels occupants, with more space. Finally the rigidity of the body-in-white (torsional made of different steel grades and sheet improved joint lines are intended to con- values increased by 9 % while flexural thicknesses are laser-welded together. vey an even greater impression of quality. rigidity rose by 14 %). They allow the vehicle weight to be reduced and crumple zones to be These improvements have been The bulkhead cross member in the defined. achieved with the following main front of the vehicle has been complete- changes in particular: ly re-engineered. It is now made of Together with the front side members, maximum strength steel (Boron 02) the bulkhead cross member in the • Use of the spot welding/bonding and is produced in a new manufacturing middle tier ensures very high resist- method process. This has allowed the cross ance. section to be matched to the available • Redesigning of the joint areas space and optimisation of the The use of the Porsche mounting- (A-pillar, sills) footwell space. The reduction in the point concept, in which special refer- cross section has also allowed the an- ence points precisely define the arrange- • Use of a new bulkhead cross mem- chorage for the pedals and hence the ment of the individual body parts in ber made of boron steel pedals themselves to be moved for- relation to each other, has permitted a wards by 10 mm/0.39 in. The clutch further improvement in production • Repositioning of the pedals pedal has been moved forwards by precision. 15 mm/0.59 in to improve ergonomics. • Use of tailored blanks for the front This provides taller drivers with more The associated process reliability guar- side members legroom and allows them to find an antees uniform joint lines throughout optimum seat position. the body. • Integration of a further load path at the level of the upper door trims The increased rigidity of the cross member and the improved anchorage have • Use of the Porsche mounting-point significantly reduced possible footwell concept intrusion in the event of a crash.

53 5.2 Doors/lids The luggage compartment lids of the new Boxster and Boxster S has been The doors have been redesigned in the constructed as an aluminium shell to following areas in comparison with the reduce weight. This has resulted in a previous model with the objective of weight saving of approx. 3 kg/6.61 lbs further improving crash safety: at the rear and approx. 6 kg/13.23 lbs The so-called upper load path has at the front, or a reduction of 33 % and been optimised to improve the 43 % respectively. strength of the passenger cell in a frontal or offset crash. The upper load path above the door very effectively dis- tributes the energy introduced into the body in a front crash between the front and rear of the vehicle. To this end, the upper area of the door has been reinforced through an additional profile sheet made from steel. It is further reinforced by an optimised side section structure in the event of a crash. Like the new 911 Carrera, the new Boxster is also fitted with the new bow- type handle.

Mild Steel

Tailored Blanks

High Strength Steel

Ultra High Strength Steel

High Strength Austenitic Stainless Steel

Aluminium

Figure 65: Body-in-white with doors and lids

54 5.3 Roll-over bar

The newly developed roll-over bar is now higher and further back. It is made of austenitic stainless steel, a special stainless steel alloy that offers maximum strength, and is manufactured using IHPF technology (internal high-pressure forming). This new manufacturing method and an optimised design have permitted a 30 % increase in strength. These measures combined with the new seats and their higher headrests have permitted a further improvement in the already impressive passenger sur- Figure 66: Interior vival space of the previous model. 5.4 Bumper system past” the impressions which form a star- shaped narrowing. This process re- The proven bumper system has been duces energy and therefore also enhanced and improved. minimises intrusion into body parts and For example the area of the impact overall deformation of the front of elements on the front bumper has the vehicle. undergone substantial modification. The As well as the impact element, the objective of this modification was to cross member in the front bumper has increase protection for the body- also been reinforced for better crash in-white in the front of the vehicle at behaviour. low impact speeds. This is important for a favourable insurance classification The rear bumper concept has been (comprehensive). retained from the previous model and adapted to the new rear section. Improvement in this area has been achieved through the use of new, ener- The towing lug, which is supplied in the gy-absorbing impact elements with tool kit, can be screwed into the front or a stroke of 50 mm/1.97 in. These im- rear cross member in the bumper as be- pact elements now consist of two tubes, fore should the need arise. The thread one inserted into the other, instead of cover now acts as a small rocker and just one tube as was previously the case. can be removed without tools simply by At the same time they are now secured pressing on the lower section. to the front body cross member using three threaded connections instead of two. As a result they are less sensitive to oblique impact.

The outer, thicker-walled tube is equipped with specially defined impressions. In a crash, the inner tube is pushed into the outer one. In doing so it must “push

55 5.5 Front end The headlight washer system was pre- lower repair costs in the event of the viously integrated in the headlight mod- front apron having to be repaired. The front ends of the new Boxster module. On the new Boxster it is integrated els have been completely redesigned. directly in the front end. The Boxster S again features an addi- In addition to a new styling which tional central air inlet behind which an ensures optimum aerodynamic and additional radiator in vehicles with thermodynamic conditions at the Three different licence plate holders Tiptronic S ensures an even heat bal- front of the vehicle, the following tailored to the different licence plate ance for the engine. This opening is cov- changes have also been made: shapes together with the necessary ered by a trim on vehicles with manual screws are available as an assembly kit gearbox. • Integration of additional headlights for the various regions (Europe/USA/ (fog light/marker light) export). The holders can be attached directly to the front end. Two discreet • Integration of the headlight washer centring aids are provided for this pur- system pose. The conspicuous screw points are omitted for countries without a licence • New fastening concept for the plate at the front to maintain the continu- licence plate (that needs no mounting ous smooth surface of the front end. holes in the trim) The so-called zero-joints concept has • Introduction of the zero-joints been developed to achieve a more har- concept monious styling of the transitions to the body. This is mainly facilitated by the The front end houses one-piece light Porsche mounting-point concept with fur- modules (front lights) containing the ther reduced component tolerances fog light and position light above the used in the new series. Overall the at- side air inlets. tachment of the front end to the body has been simplified through the substi- tution of clips for threaded connections. This ensures shorter repair times and

Figure 67: Boxster S

56 5.8 Side air inlet

The air inlets integrated in the rear side section with their new, dynamic look significantly improve the ventilation of the engine compartment.

The air intake snorkel of the air cleaner housing is still located behind the opening on the left-hand side (in the direction of travel). A new feature is an efficient convoluted system, not connected to the body, which removes water and particles from the engine intake

Figure 68: Boxster S (with ParkAssist) air. The engine compartment scavenging blower draws the cooling air into 5.6 Rear end 5.7 Rear spoiler the engine compartment via the opening on the right-hand side. The rear end, like the front end, has also The integrated electrically extendable been redesigned to take account of rear spoiler has also been restyled The air intake grilles as well as the aerodynamic and thermodynamic re- and as before is executed as a plastic frame are titanium-colored for effect. quirements. The following changes have construction with aluminium frame. been made to the rear end: The spoiler extends at approx. 120 km/h / 75 mph to reduce lift • Introduction of the zero-joints coefficients at the rear axle, thereby concept increasing driving stability. Since aerodynamic forces are rather less important • Optimised integration of the optional at low speeds, it retracts at speeds be- parking sensors low approx. 80 km/h / 50 mph to show off the classic lines of the Boxster to • The override bumpers prescribed their best advantage. for the USA have been matched to the exterior color and integrated in the trim.

Figure 69: Rear spoiler Figure 70: Side air inlet

57 5.9 Tank compartment area (previously in the front right wheel housing). This means The filling volume of the tank is un- that the complex systems of lines with changed at 64 litres/16.9 US gal. As be- integrated valves previously needed with fore, the tank is filled via a filler neck the old two-chamber active carbon filter over the right-hand front wheel. Similarly to comply with the strict regulations in there are still two tank designs to comply the USA are no longer required. The with different country-specific require- filter is part of the ORVR system (On ments: one RoW variant and one USA board Refueling Vapor Recovery) pre- variant. scribed in the USA. ORVR means that petrol vapours are routed via the active Apart from some small details, the RoW carbon filter both when driving and when tank has been taken directly from the refuelling and then returned to the en- previous Boxster. Porsche’s many years gine for combustion. This is necessary of experience with the tank system since petrol pumps in the USA do not used have enabled them to optimise it extract fuel vapours. A new OBD II unit further. Accordingly the current model (On Board Diagnosis) for leakage diag- does not include a fresh air line for nosis is integrated in the active carbon the active carbon filter. It used to run filter. This unit can detect holes as small from the active carbon filter mounted in as 0.5 mm/0.02 in (previously 1 mm/ the front right wheel housing back to the 0.04 in) in the fuel system. engine compartment. Fresh air is now taken in directly via a water separator at the filter housing. The bleeder valve mounted in the area of the fuel filler neck has also been replaced by a pressure holding valve integrated directly in the vent line.

The tank system for the USA has been totally redeveloped. As part of this the Boxster, like the new 911 Carrera/S, is now fitted with a fuel pump with a higher delivery capacity. Instead of being made from a conventional, highly leakproof polyethylene, the tank now has a special six-layer structure with different layers consisting of polyethylene, bonding agents and a very effective diffusion inhibitor. This further reduces hydrocarbon emissions over the long term.

The tank ventilation system has been considerably simplified through the use of a new four-chamber active carbon filter. This is now housed in the luggage

58 5.10 Luggage compartments only fitted with a cover for the brake metal edges which were previously visi- fluid reservoir including the brake ble are now neatly covered. The choice 5.10.1 Front luggage compartment unit. Vehicles with a CD autochanger, of material for the trim and the manufac- Sound Package Plus or Navigation and turing process ensure a feeling of quali- The omission of the spare wheel, which all USA vehicles have a large full trim ty. The materials used are particularly was previously housed near the bulk- that covers the entire bulkhead area. (In scratch-resistant plastics that are in- head, and the new bulkhead cross mem- the case of USA vehicles, the prescribed jected in a two-component technique ber in the body-in-white have facilitated active carbon filter is also mounted un- (i.e. where a harder main part has a soft- a redesign of the luggage compart- derneath this trim.) A separate flap on er sealing lip sprayed onto it). The seal- ment. the left (in the direction of travel) pro- ing lips permit a clean transition among vides access to the brake fluid reservoir the individual parts and between the indi- This redesign has enabled the luggage for checking the brake fluid level. vidual parts and the body. compartment volume to be in- The redesign of the front lock sur- creased by approx. 20 litres/0.7 cu ft An emergency release inside the lug- round with defined water drain open- to approx. 150 litres/5.3 cu ft. gage compartment for the luggage ings results in considerably less soiling compartment lid has been specially of the trim than before. The cover pack- A new trim concept has been devel- developed for USA vehicles (Trunk En- age ensures an aesthetically appealing, oped to enhance the overall appearance trapment). This device, required by legis- high-quality appearance. of the luggage compartment. In addition lation in the USA, allows a child who has to new, large-area trims on the in- accidentally become locked in the lug- side of the luggage compartment, it gage compartment to open the lid from also includes full trim on the areas the inside. The handle for the release is around the luggage compartment to the front (in the direction of travel) up to the lower frame of the windscreen near the right-hand side member. (cross panel, side section and radiator tank trim). This gives the luggage The new wing flange and radiator compartment a clear structure and tank cover ensures that screws and makes it feel extremely tidy.

For example, the audio amplifier (optional), the tire sealing compound and compressor and the tool bag (including rim nut wrench and towing eye) are hidden behind a vertical trim that runs across the entire width of the luggage compartment. The lower edge of the trim is held flush with the luggage compartment floor by a retaining rail and can be easily opened and folded forward to provide easy access to the items within. Integrated on the upper side is a holder which keeps the warning triangle handy for use in an emergency.

The first aid kit is located on the right- hand side on the bulkhead. Vehicles with the basic equipment level are Figure 71: Front luggage compartment

59 5.10.2 Rear luggage compartment 5.11 Glazing

The mid-engine design provides the ideal The Boxster offers the following new prerequisites for the familiar “twin features in the area of glazing: luggage compartment principle” of the Boxster. Even with the convertible The use of a water-repellent coating top down, the volume of the easily on the side windows as on the new loaded rear storage space is approx. 911 Carrera/S. These windows have the Figure 73: Boxster 130 litres/4.6 cu ft. The luggage com- major advantage of being much less partment lid can be conveniently opened susceptible to soiling than conventional The heavily top-tinted windshield via a switch in the passenger compart- windows since water and dirt falling available as an option now has a grey ment or directly via a button on the ig- on them form droplets which are then tint that complements all of the available nition key. Both luggage compartments carried away by the wind. This substan- exterior colors. offer a combined storage space of tially improves the transparency of approx. 280 litre/9.9 cu ft – enough ca- the windows and therefore the overall pacity for a holiday for two. view in the rain and in winter weather conditions (when de-icing salt may be The service tray containing the filler used). necks for engine oil and coolant is located to the right in the front. Another new feature is the revised glazing concept. The amount of rubber visible around the windows has been reduced through the use of thinner seals. This technique results in aesthetically pleasing glass edges at the front window which emphasise the clean lines of the vehicle as a whole.

Figure 72: Rear luggage compartment

60 5.12 Wind deflector

The basic principle of the optional three-part wind deflector has been retained from the previous model. The taller roll-over bars (+25 mm/+0.99 in) facilitate a larger area for the central element made from Plexiglas. The latching mechanism at the mounting points on the roll-over bar has also been made considerably simpler and easier to use. The deflector can now be un- latched by simply pressing on one of the two release buttons and then removed. The insertion process has also be simplified. The wind deflector is now inserted by placing it on the center guide and then pushing it backwards into the two holders. Figure 74: Wind deflector

The addition of a camber has increased the stability of the wind deflector by reducing buffeting at high speeds. The two outer sections of the wind deflector (fine-mesh plastic screen in the roll-over bars) are still easy to insert and are fixed in place by clips to prevent vibration.

61 5.13 Electrically operated convertible top

The convertible top of the new Boxster has been completely redesigned while maintaining the basic principle with mechanical release, electric drive and zig-zag folding system.

The side view of the convertible top has been adapted to the new contours of the door windows.

The removal motion of the convertible top, and hence the entire kinematics of the top frame, has had to be redesigned to take account of the higher roll-over bar. This has accommodated the now higher roll-over bar without the storage position of the roof structure having to be changed.

The electrical controls for the convertible top can be used at speeds up to 50 km/h / 30 mph. Once the convertible top has been released, the opening process must be started via a switch with a tip/one-touch function. The tip function is available at speeds between 10 and 50 km/h / 6 and 30 mph. The switch must be held at speeds below 10 km/h / 6 mph. The closing process works in the same way.

The opening and closing time of 12 seconds for the new Boxster models sets another new standard in the area of convertible tops with separate top compartment lid and is the best in class among the competition.

As on the previous model, the front of the convertible top comprises a solid cast magnesium structure which offers increased passenger protection, particularly in the event of overturning with the convertible top closed, as it Figure 75: Electrically operated convertible top

62 Figure 76: Convertible top structure and textile layers

significantly improves the strength and edge is to drain the rain water that col- 5.14 Hardtop stability of the convertible top in this lects in the front header bow when the area. The tension bows and central vehicle is stationary into the seal of the The optional hardtop has been essen- spars from the corner and main bows A-pillar via the corner sealing piece. This tially retained from the previous model. are made from aluminium. This has results in better water drainage which The easily mounted hardtop, which only permitted a further reduction in the significantly minimises the risk of weighs around 23 kg/50.7 lbs, is made weight of the convertible top/roll-over rain water dripping off a wet convert- from aluminium using the punch-rivet- bar unit in comparison with the previous ible top shortly after entry. ing method and has a heated rear win- model (which was already the best in its dow. segment). The scratch-resistant glass rear win- The aluminium side sections with seal dow, the only component to be retained technology have been adapted to the The quality of the convertible top from the previous model, is heated to new contours of the door windows. cloth has been further improved through ensure good visibility in all weather con- extensive fine-tuning. This is reflected ditions. in the cloth which for the first time consists of 3 textile layers. In addition to the outer material and the headliner, there is also an additional new intermediate layer made from webbed fabric under the outer skin of textile, which has significantly reduced interior noise when the convertible top is closed.

The water management system for the convertible top has also been improved. This has been done through the addition of a further water drain to the water drain edge. The purpose of this Figure 77: Hardtop

63 6 Aerodynamics

During development of the new vehicle it became obvious that further enhancement of the aerodynamic properties of the Boxster in comparison with the competition was required. The objective in doing so was to take account of the increased performance by reducing the aerodynamic lifting forces and at the same time to further reduce the drag coefficient (despite the higher cooling air requirement for brake and engine cooling).

Figure 78: Boxster S The main challenges in the aerodynamic development of the new Boxster se- These development objectives have ries were: mainly been achieved through:

• The larger frontal area, caused by • Aerodynamic optimisation of the flared wheel housings and wider tires styling in particular • Optimisation of the cooling-air guide • The lower lift coefficients and hence the increased wheel load •New underbody lining

• The higher cooling air requirement • Optimisation of add-on parts of the brakes due to the increase in performance

• The more efficient cooling due to the higher engine output

64 The result has been a dramatic improvement in aerodynamic coefficients in comparison with the previous model.

• The drag coefficient of the Boxster

has been reduced to cd = 0.29 (previous Boxster model: 0.31) and the drag coefficient of the Boxster S has

been reduced to cd = 0.30 (previous Boxster S model: 0.32).

• Despite a larger frontal area, drag

(cd x A) has actually been reduced in comparison with the previous model.

• The lift coefficients at the front and rear axle have been significantly re- Figure 79: How the new Boxster compares duced on the Boxster and Boxster S (front axle: –25 %, rear axle: –30 %).

The excellent aerodynamic coefficients have further strengthened the aerodynamic credentials of the new Boxster in its segment. The optimised aerodynamics of the new Boxster therefore help to improve driving dynamics, performance and fuel economy.

Boxster (987) Boxster (986) Boxster S (987 S) Boxster S (986 S) Differences (%) MY 05 MY 04 MY 05 MY 04 Boxster Boxster S

Drag coefficient cd 0.29 0.31 0.30 0.32 – 6.5 –6.3

2 Frontal area AX (m ) 1.96 1.94 1.97 1.94 +1.0 +1.6

Drag cd xAX 0.57 0.60 0.59 0.62 –5.0 –4.8

Table 7: Overview of technical data* *Model with manual gearbox, measured in the Porsche wind tunnel

65 6.1 Optimization of the styling The lateral front apron radii and The side windows also have a new of the outer skin wheel housings are designed to shield water-repellent coating for the first the front wheels from the air flow in time to reduce soiling. The main objective in the redesign of the an optimum manner. These measures exterior has been to harmonise the have resulted in a reduction in drag, Rear area: aesthetic and aerodynamic require- improved ventilation of the wheel The main optimisations in the rear have ments. The main starting points when housing and consequently less lift at been to the flared wheel housings and it came to optimising the aerodynamic the front axle. the rear spoiler. outer skin, apart from the front and rear of the vehicle, were the wings and rear A-pillar/mirrors/side windows: As on the front, the radii of the rear side sections. Particular attention had The shape of the A-pillar has also been side sections have been designed to to be paid to aerodynamic integration of optimised in terms of flow characteris- produce an aerodynamically efficient the flared wheel housings. tics and is now more vaulted. This air flow at the rear wheels and the rear reduces resistance and cuts down on end, which improves resistance and Rear area: wind noises at higher speeds for no- reduces lift at the rear axle. The sweep and the radii of the front ticeably more comfort on long journeys. apron have been optimised to produce The door mirror has been redesigned In combination with the greater exten- an aerodynamically efficient air flow and is now connected to the mirror sion height of the rear spoiler, this en- at the front end and significantly attachment finishers via a new double sures that the rear spoiler functions at better prerequisites for cooling air arm. The mirror housing and the air the optimum aerodynamic operating flow without affecting the styling of the duct at the mirror and the side windows point and that the desired rear axle lift outline. The lateral openings on the have been optimised for minimum with the optimum resistance advan- front apron required to supply cool air resistance and maximum protection tage is achieved. to the radiators have also been carefully against drops of water landing on the optimised and integrated in the front mirror glass and the side windows. The redesigned air inlet in the rear side end concept. section echoes the geometric appearance of the Carrera GT. The position and

Figure 80: Air flow around the body

66 opening cross section of the air inlet have been carefully optimised to deliver the maximum increase in air throughput without negatively affecting lift and resistance. The result has been an improvement in the engine compartment flow, a reduction in the temperature level in the engine compartment and a guarantee of optimum intake of combustion air.

Figure 81: Air flow through the radiators/brake cooling (shown on the 911 Carrera S)

6.2 Optimisation of the cooling-air same time, targeted guidance of the guide cooling air ensures an optimum air flow for the radiators. When designing The main objective when designing the the cooling-air guidance system, particu- cooling-air guide is to ensure the neces- lar attention was paid to keeping the air sary cooling air requirement for the ducts short and the deflection as low as engine and brakes in all operating possible. The exhaust air flow from the states of the vehicle. The general objec- radiators is therefore now also expelled tive with both cooling concepts is to laterally into the wheel housing lin- achieve a flow with as little resistance ers instead of just vertically downwards as possible to minimise the effect of in front of the front wheels. This re- the cooling-air flow on the resistance duces flow loss for the cooling-air guid- coefficient of the vehicle as a whole. ance system while lateral expulsion of The effect of the flow on the lifting the air reduces the lift at the front axle. forces must also be minimised or used as cleverly as possible to achieve Another benefit of lateral expulsion is the objectives for lifting forces and lift that it results in much less dust being balance. raised when the radiator fan is running on dusty surfaces. Ventilation flaps The higher output of the 3.2 litre engine have been inserted into the corners of of the Boxster S results in more engine the square fan frames to further in- waste heat, increasing the cooling air crease air throughput during journeys. requirement by approx. 15 %. In addition These ventilation flaps open above to using larger and more efficient radia- speeds of approx. 70 km/h / 45 mph to tors, the optimised cooling-air guide facilitate an additional flow of cool air. is a significant factor in the increased cooling performance. As on the previous All in all and despite the increased model, the new cooling-air guide is com- cooling-air throughput, the new resist- pletely closed to avoid leakages. At the ance-optimised air routing concept

67 has enabled the air flow resistance to 6.3 Underbody lining The smoother underbody means that be limited to approx. 2.5 % of the total air hitting the rear of the vehicle is less resistance – an extremely low level in The underbody linings UBL1 (“front prone to deceleration and turbulence. comparison with the competition. Re- underbody lining”), UBL2 (“center under- This means that there is a greater air quirement-driven supply of cool air has body lining” and UBL3 (“rear underbody flow mass available to the flexible deflec- enabled significantly smaller air inlet lining”) from the previous model have tion vanes from the underbody flow, openings in the front end in comparison been optimised to the aerodynamic which permits extremely efficient en- with the competition, which fits in well requirements of the new vehicle. In gine cooling from the point of view of with stylistic requirements. comparison with the previous model, aerodynamics and thermodynamics. the lined area has been increased by approx. 70 %. The underbody lining at the front has been extended to the front side members to compensate for the aerodynamic drawbacks of the new brake air deflector. The two side sections of the center UBL2 have also been redeveloped.

As a result, the air routed along the lined underbody is now much less prone to turbulence and loss. The benefit of these measures and effects is that they allow the top speed to be increased and the fuel economy at higher speeds to be improved. These measures also help to improve the vehicle’s balance, particularly in higher speed ranges.

Figure 82: Underbody lining of 987 vs. 986

68 Figure 83: Underbody lining on the Boxster S

6.4 Add-on parts The improved performance has also resulted in higher requirements for Add-on parts such as wheel spoilers, brake cooling. An optimised brake brake air deflectors, etc. help to achieve air deflector has been developed for aerodynamic objectives and therefore the Boxster which ensures more effi- must be carefully optimised. cient deflection of the air routed The flared wheel housings and wider through the brake air ducts on the un- tires mean that the wheel spoilers for derbody to the brake discs and signifi- the front and rear wheels have had to cantly better brake cooling as a be redesigned and optimised. These result of the higher air throughput. wheel spoilers shield the wheels from the air flow in an effective manner and encourage the air coming from the front and the underbody to flow past the tires aerodynamically. This guarantees a low- resistance air flow around the wheels and reduces the overall drag coefficient. In addition, the optimised wheel spoilers and further add-on parts on the underbody influence the lifting forces in such a way as to achieve the desired aerodynamic lift balance.

69 7 Interior tages of slush technology are higher- in the center console and of the door quality surfaces, more precise sizing of storage bin are also upholstered in 7.1 Material design components, uniform graining and the leather on the Boxster S. option to describe very small radii. The Particular attention has been paid in the range of standard colors for the new The seat center is in Alcantara as new Boxster generation to improving Boxster has also been extended to standard. the quality of the materials used in include four new colors (Sand Beige, the interior. Accordingly the amount of Palm Green, Stone Grey and Ocean blue) Further upgrade measures affect indi- soft-touch paint has been reduced in addition to Black. vidual interior components which are and more components based on slush finished in the new color “Volcano technology with improved surface In both models the following compo- Grey” or in an aluminium-look. These quality and appearance used. The use nents are upholstered in grained-look also serve to differentiate between the of slush technology has almost com- leather as standard: shift lever, steering Boxster and Boxster S. pletely taken over from the lamination of wheel rim, handbrake lever grip and components with a flat film. The advan- door handle. The lid of the storage bin

Figure 84: Interior in Macassar wood

Boxster Boxster S Volcano Grey Instrument cluster frame, center console trims/controls, Y-shaped cover of basic steering wheel or multi-function steering wheel (option)/hub trim of sports steering wheel (option), lower part of handbrake lever, roll-over bar, seat controls trim, seat fitting trim, backrest release trim, clothes hook on seat back, shell of rear seat backrest of (adaptive) sports seat (option), opening lever for convertible top

Decorative dashboard trim, center console clasp

Aluminium-look Vent trim rings, steering wheel spoke covers, glove compartment catch, door trim, airbag badge, finish decorative trim on front of shift lever, release button and gear selector gate for Tiptronic S (option), handbrake release button, seat controls, backrest release

Decorative dashboard trim, center console clasp, gearshift pattern on shift lever

Table 8: Main interior parts can additionally be upholstered in leather and customised with wood, carbon or aluminium-look finish as an option.

70 Main interior parts can additionally be upholstered in leather and customised with wood, carbon or aluminium-look finish as an option.

Figure 85: Macassar wood interior

Figure 86: Sycamore interior

Figure 87: Carbon interior

71 The leather interior includes the standard upholstered items plus the following components:

upper part of dashboard incl. airbag cover, instrument cluster cover, lower part of dashboard and glove compartment lid, door-trim panels, door storage bin lid, center console storage bin lid, cushioned pads on the center console, cushioned pads on the roll-over bars and seats.

If a leather interior is ordered, all

Figure 88: Aluminium-look interior leather scopes will be finished in smooth leather. The high quality of 7.2 Leather interior Sand Beige, Palm Green, Stone Grey the leather interior is further empha- and Ocean blue. Terracotta, Cocoa and sised with additional decorative Optional partial leather seats are a very attractive combination of Black seams on the dashboard, the door-trim available as the first upgrade level for and Stone Grey (two-tone) are available panel and the center console. the Boxster series. With partial leather as new special colors. seats, the entire seat and backrest The colors of Dark Grey and Brown surface is upholstered in grained from the previous model are available leather. in natural leather.

A leather interior is also available as an option in the standard colors Black,

Figure 89: Boxster S interior in Cocoa leather

72 7.3 Storage bins and transport concept

The new Boxster offers an intelligent storage concept with a multitude of storage possibilities.

Glove compartment: The glove compartment on the passenger side is particularly spacious in comparison with the previous model, having been increased from 5 to approx. 6.5 litres/0.23 cu ft (300 mm/11.8 in (W) x 215 mm/8.5 in (D) x 100 mm/

3.9 in (H)). The width has been selected Figure 91: Cup holder to accommodate commonly sized ob- jects. The height can now also be more Cup holder: The cup holders are equipped with a effectively utilised and offers suffi- The newly developed cup holder is special mechanism which allows them cient space for items larger than discreetly integrated in the dash- to adjust to containers of different sizes a commercially available road atlas. The board above the glove compartment. up to a maximum diameter of 74 mm/ glove compartment contains a compart- It is hidden behind a hinged cover 2.9 in. ment for two CDs (if the Sound Package (with a Volcano Grey or aluminium-look Plus or the BOSE® Surround Sound sys- paint finish depending on the equipment) tem is ordered) and a holder for a pen. which allows the compartment to be It is opened via a hinged handle with an elegantly closed even when the cup aluminium-look paint finish and can be holder is in use. Each cup holder can locked to protect against theft. be individually used if required. When in use, both holders sit in front of the passenger’s air vent. This permits extremely efficient cooling of beverages.

Figure 90: Glove compartment

73 Center console: Sockets: A storage box on the engine cover In the bottom of the front part of the The new Boxster has 3 sockets to meet beneath the roll-over bar is available on center console is a small, open stor- even the most demanding customer re- request. This box can be used to store age tray which can be used for holding quirements. smaller items. It is not available in keys or other small items. combination with the optional BOSE® There are also further storage facilities As well as the cigarette lighter, which Surround Sound system. in the rear part of the center console. can be used as a socket, and the 12 Here, underneath an upholstered lid volt socket in the large compartment in which doubles as an arm rest, is a large the center console, the new Boxster compartment with approx. 1.5 litres/ also features an additional 12 volt sock- 0.05 cu ft of storage space (180 mm/ et on the side of the center console in 7.1 in (L) x approx. 105 mm/4.1 in (W) x the passenger’s footwell. approx. 80 mm/3.2 in (H)). Integrated in this compartment are a 12 volt socket Further storage compartments: and a coin holder. As before, the center The door-trim panels house large stor- console also contains an illuminated ash- age pockets (300 mm/11.8 in (L) x tray with cigarette lighter und cigarette 95 mm/3.7 in (W) x 120 mm/4.7 in (H)) extinguisher. fitted with lids. These lids, with their comfortable padding, double as arm rests. For maximum ergonomics, the designers made particularly sure that the door and center console arm rests were the same height. The lids of the door storage bin and center console storage bin on the Boxster S are upholstered in grained leather as standard.

As in the previous model, the door sill on the passenger side features a long, open pocket.

All of the compartments in the center console and the sill pocket are lined with a removable rubber mat. This prevents rattling noises and produces an impres-

Figure 92: Front section of center console sion of quality.

Integrated in the seat back of all the seat variants is a pocket which is ideally suited to holding a map or an ice scraper, for example.

Figure 93: Rear section of center console

74 7.4 Steering wheels extremely supple surface which gives the steering wheel an extremely agree- A new generation of steering wheels able feel and a classic look. The leather has been developed for the new at the steering wheel rim is hand- generation of 911 and Boxster. This new finished with a cross-stitch seam as generation includes the standard basic a final styling detail. steering wheel and the optional sports steering wheel and multi-function steering wheel.

The clean, smart and sporty styling of the three new steering wheels is in perfect harmony with the newly designed interior. All steering wheel versions feature an integrated fullsize Figure 94: Basic steering wheel (manual gearbox) airbag. The steering wheel rim is upholstered in moulded leather as 7.4.1 Basic steering wheel standard. The basic steering wheel offers good All steering wheels have been designed handling thanks to a small diameter of with good ergonomics in mind. just 375 mm/14.8 in. Clearly defined Nonetheless the light-weight construc- shapes and accents in silver and grey tion techniques for which Porsche is give a very high-quality appearance. known have not been ignored: the sub- structure of the steering wheel is now The cover of the lower vertical spoke executed as a composite frame made is painted Volcano Grey and frames the of magnesium. This has enabled a impact absorber at its two lower edges reduction in weight of 10 % in com- in a V- shape. The covers of the two parison with the old steel and aluminium horizontal spokes are painted with an construction. aluminium-look finish to provide a visual contrast. All steering wheels are optionally available in the five interior colors or in the As before, the Tiptronic S version has in- special colors and natural leather tegrated rocker switches on either side colors at additional cost. The multi- of the impact absorber. function steering wheel is additionally offered in two types of wood (“Macas- sar”, dark and “sycamore”, light), in a carbon finish and in an aluminium- look finish.

Even more desirable is the optional smooth leather upholstery for all steering wheel variants, automatically supplied with the wood or carbon steering wheel finish. The leather used is of an especially high quality with an

75 How the multi-function steering wheel works: The top two buttons have been executed as rotary switch buttons. The left button is used to regulate the volume of the audio system (turn) and mute the sound (push). The right button works in the same way as the right rotary switch button on the PCM. The center left button with the screen icon can be used in the basic setting to connect through the main menu. The center right button is assigned the “Back” function for returning to the PCM

Figure 95: Sports steering wheel (manual gearbox, Figure 96: Multi-function steering wheel (Tiptronic S) menu. shown here on the 911 Carrera S) If there is a telephone installed in the vehicle, the two lower keys can be used 7.4.2 Sports steering wheel 7.4.3 Multi-function steering wheel to accept and hang up calls. If there is no telephone installed, the two lower The main differences between the sports The multi-function steering wheel is keys are unassigned. steering wheel and the basic steering based on the basic steering wheel wheel are the highly contoured rim and is only available in combination with The multi-function steering wheel is and a round impact absorber. These the PCM option. Unlike the basic steer- additionally offered in two types of are combined with a steering wheel ing wheel however, it has four function wood (“Macassar”, dark and diameter of just 370 mm/14.6 in which buttons and two function rollers “Sycamore”, light), in a carbon finish emphasises the sporty styling. The (rotary switch buttons) evenly divided and in an aluminium-look finish. ergono-mically shaped finger plates on between the left-hand and right-hand the steering wheel rim ensure a good spokes. grip on the steering wheel even when the vehicle is driven more aggressively. These buttons and rollers allow the The accents of silver and grey are also driver to operate essential audio, navi- picked up on the sports steering wheel. gation and if applicable telephone Thus the covers of the three spokes are functions without having to take their painted in an aluminium-look finish for hands off the wheel. This means less emphasis. The impact absorber paint- distraction and better concentration on ed in soft-touch paint is embedded in what is happening on the road. a Volcano Grey decorative ring. The black function buttons are embed- As on the basic steering wheel, the ded in bezels painted with an aluminium- Tiptronic S rocker switches on the look finish. This clearly emphasises the sports steering wheel are arranged to controls, both visually and functionally. the left and right of the impact absorber. They are also ergonomically arranged to ensure the driver can easily operate The 3-spoke sports steering wheel them using their left or right thumb. will also be available in an upholstered version from 01/2005 at the earliest.

76 7.5 Pedals The accelerator pedal box is new. It has been redesigned with the aim of Individual components of the pedals of reducing the number of individual com- the new Boxster have been redesigned. ponents. A pedal encoder is now inte- One of the most obvious changes is the grated directly in the accelerator pedal new sporty look. It is emphasised by box. This means that the holder and spe- the new pedal caps which consist of cial control cable are no longer needed. a rubber insert and a stainless steel The main reason for doing this is that it frame. has enabled the module weight to be reduced by 60% (approx. 600 g/ Another advantage of the redesign is 1.3 lbs). that it provided an opportunity to repo- sition the pedals towards the front of the vehicle, enabling the taller driver to find a more comfortable sitting position. This repositioning of the pedals was made possible mainly through the new bulkhead cross member in the body-in-white. This allowed the brake and accelerator pedals to be moved forward by 10 mm/0.4 in and the clutch pedal by 15 mm/0.6 in.

Figure 97: Pedals

77 7.6.1 Overview

A fully electric seat, a sports seat and an adaptive sports seat are available as options in addition to the standard seat. The standard seat and fully electric seat are available in soft ruffled leather in combination with the leather interior. All seat variants are characterised by the following features:

Improved comfort: It is a fact that average body size across the world is getting bigger. To

Figure 98: Boxster S interior with soft ruffled leather seats take account of this fact the front seats have been designed for larger people, 7.6 Seats • Considerable improvement in comfort particularly in relation to the width of the on short and long journeys shoulder area and the seat cushions. The seat system in the Boxster has to This was done using a slimmer seat fulfil special requirements in terms of • Improvement of the lateral support frame with the same outer contour. The driving behaviour and space. Standards slimmer frame meant that the available for safety and light-weight construction • Consistent implementation of light- interior seat dimensions were in- have also increased in comparison with weight construction techniques creased which allowed the use of foam the previous model. In order to meet that is approx. 20 % thicker than in the these requirements without compromise, • Option via Tequipment to install child predecessor. the seats have been redesigned with seats the following objectives: The main influencing factors for relaxed • Further improvements in passenger driving are the level of support and the protection through integration of addi- level of shock absorption, for example tional thorax airbags as well as higher on uneven surfaces, offered by the seat. backrests with improved headrests Following extensive testing of damping behaviour in the vehicle, Porsche has developed a patented damping/ vibration system for its seats.

Improved lateral support: Lateral support for occupants is especially important, particularly with high lateral acceleration. A seat with good lateral support will stabilise the driver and passenger, for example when cornering at high speeds, without the need for any additional support. This is a prerequi- site for precision control in extreme driving situations.

78 The higher side bolsters in the new seat Increased passenger protection: 7.6.2 Standard seats generation provide improved lateral The revised Porsche Side Impact support. The side bolster cushions are Protection System (POSIP) includes a The seats in the new Boxster can be further reinforced by the contour of the number of airbags. adjusted in 6 directions. The backrest frame. The lateral support offered by In addition to the head airbag integrated recline is adjusted electrically, while the sports seats is 50 % greater than in the door-trim panel, there is an addi- the length and height are adjusted that offered by the standard seats. tional thorax airbag integrated in the mechanically. Height adjustment is Lastly the adaptive sports seat sys- outer side bolster of the seats. The performed using a newly developed tem even offers a facility for individually thorax airbag has a volume of approx. stepper mechanism located between the adjusting the side bolsters of the seat 8 litres/0.28 cu ft. seat and the sill. The advantage of the cushion and the backrest to the respec- new mechanism is that it permits pre- tive driver. This provides greater support The increase in body size already men- cise and smooth adjustment of the for the body than is possible with con- tioned above has been taken into ac- seat height without the driver having to ventional sports seats. count with a 50 mm/2.0 in increase support themselves using the steering in backrest height. The gap between wheel, for example. More consistent use of light-weight the back of the head and the head- construction techniques: rest has been reduced by bending the The overall weight of the vehicle has a backrest mounts towards the occupant direct influence on performance and fuel at an angle of 90 degrees. This reduces economy. The consistent use of light- the occupants’ risk of whiplash in the weight construction techniques in the event of a rear-end collision. new seat system has facilitated a reduction in weight despite the higher strength requirements. As a result, the new seat system is approx. 6 kg/ 13.2 lbs lighter than a predecessor seat equipped with comparable functions.

Integration of ISOFIX and LATCH child seats: The possibility to retrofit child seats using an ISOFIX or LATCH anchorage on the passenger seat has been taken into account in the development of the new seats. Since the child seats are fixed directly to the seat frame with ISOFIX and LATCH, the structural rigidity has been increased. The passenger airbag can be deactivated via a key switch when the child seat is in place. This key switch and the preparation for child-seat mounting are part of a Tequip- ment retrofit package.

Figure 99: Standard seat

79 7.6.3 Fully electric seats 7.6.4 Sports seats 7.6.5 Adaptive sports seats

With the optional fully electric seats, all Sports seats are offered as an option The optional high-end adaptive sports settings can be adjusted electrically for the Boxster and Boxster S to take seat represents a further step towards via controls on the sill side of the seat greater account of customer wishes and an individually adjustable sports cushion. Electric seats can be adjusted the sporty character of the vehicle. seat. It combines the advantages of in 12 directions. They offer the same They are based on the six-way standard the fully electric 12-way seat struc- adjustment options as the standard seats and offer greater lateral sup- ture with the increased lateral sup- seats, plus adjustment of the seat cush- port. This is achieved with higher side port and design of the sports seat. It ion incline. The mechanism for adjust- bolsters in the seat cushions and back- also offers the user 4-way adjustment ing the seat cushion incline is not rest as well as extended support in of the side bolsters. This enables the linked to the backrest recline. This the shoulder area. Other features of interior dimensions of the seat cush- means that the backrest recline does the sports seat include firmer padding ion and backrest to be enlarged or not change when the seat cushion in- and a sportier design. Sports seats reduced independently of each other. cline is adjusted (therefore the backrest are always upholstered in leather, the does not have to be re-adjusted). A fur- backrest is painted Volcano Grey. Seats manufactured specifically accord- ther feature of the fully electric seat is ing to the physical dimensions of the the pneumatic four-way lumbar sup- driver for optimum support are a familiar port. This support is provided via inflat- part of motor sport. The adaptive sports able air cushions whose fill level is now seat allows similar conditions to be emu- recorded by displacement pick ups. This lated in just a few seconds at the touch means that the lumbar support function, of a button. Unlike static sports seats, like all of the other seat adjustment adaptation enables the seat to be functions and the outer mirrors, can co-ordinated to the clothing and driving be included in the scope of the style. memory. The buttons of the seat memory units are now located in the door-trim panel. This location has the advantage of being easily accessible and within the driver’s field of vision.

Figure 100: Fully electric seat Figure 101: Sports seat Figure 102: Adaptive sports seat

80 Figure 103: Adaptive sports seat

Attribute Seats Standard Sports seats Fully electric seats Adaptive sports seats seats Longitudinal adjustment manual manual electric electric

Height adjustment manual manual electric electric

Backrest recline adjustment electric electric electric electric

Seat recline adjustment not available not available electric electric

Adjustable lumbar support not available not available pneumatic pneumatic (with memory function)

Side bolster adjustment not available not available not available pneumatic

Memory scope not available not available all seat settings and all seat settings apart both door mirrors from side bolsters, both door mirrors

Table. 9: Overview of adjustment options

81 8 Electrics

8.1 Main headlights and front lights

The main headlight has been completely redesigned as part of the development of the new exterior styling. It is one of the main distinguishing features of the new face of the Boxster and represents an ideal synthesis of innovative design and tradition. The new design sees the marker light and fog light housed in a separate module. This has enabled the main headlight to be Figure 104: Boxster made more compact and rendered in a typical Porsche oval shape. The The gap between the marker light in the position help to improve visibility indicator lights have been integrated front light and the dipped beam in the when the fog lights are on. in the main headlights. main headlight constitutes a classic Porsche night-time design (four-light Failure check: The front light complements the design look). A blue bulb (12 V/5 W, “blue Most exterior lights are equipped with a of the main headlight and integrates vision”) ensures that the light spectrum failure checking facility. In the event seamlessly into the styling of the air of the marker light is very similar to that of a problem (e.g. bulb failure), a mes- inlet in the front apron. A special lens of the main headlight, creating a uniform sage is displayed in the instrument at the side of the light cover particularly night-time design. cluster for the following lights: dipped emphasises the contour of the lights beam, high beam, marker light, indicator when it is dark. The light houses the The front fog lights have been separat- light, brake light, rear fog light, revers- marker light and fog light and is ed from the main headlight module to ing light. fitted with clear glass and free-form enable them to be positioned consider- reflectors. The housing is secured using ably closer to the road surface. The im- invisible screws. proved lateral illumination and lower

Figure 105: Boxster

82 8.1.1 Halogen main headlights 8.1.2 Bi-Xenon main headlights incl. headlight washer The standard halogen main headlights system on the new Boxster are executed as clear-glass projection beam head- In addition to the automatic-dynamic lights (previous model: reflective head- range adjustment mechanism, the lights). The dipped beam is emitted optional gas discharge light system from an H7 long-life bulb (12 V/55 W) also includes the headlight washer while the high beam is provided by an system. The Bi-Xenon main headlight is H9 bulb (12 V/65 W). The range and similar in structure to the halogen ver- road illumination properties of both sion. The gas discharge lamp replaces these beams have been adapted to the Figure 106: Halogen headlight the halogen bulb of the dipped beam at high performance of the Boxster. There the top (the gas discharge lamp as- is also an additional reflector around the • Reduction of dazzle for passers-by sumes the function of both the dipped dipped beam module. It is illuminated by through the imposition of an upper re- beam and the high beam). The free- a portion of the dipped beam and serves striction for the light/dark limit at the form reflector with halogen bulb to brighten the surroundings. outer edge of the road. This restriction (H 11/55 W, long-life) mounted at the The option of using the dipped beam as is lower than on the previous model bottom of the main headlight is connect- so-called daytime running lights, (here there is no upper restriction of ed as an auxiliary main-beam head- where the lights come on automatically the 15° illumination angle to the right). light. It is designed as a spot to ensure each time the vehicle is started, is also The result is a wide range at the outer better long-range illumination of the new. This significantly increases active edge of the road, however as the light road. safety (only in combination with PCM is below the point of sight of passers- and Sport Chrono Package Plus). by it does not cause dazzling. The Bi-Xenon system offers the following advantages in addition to the halo- The H7 projection system offers • Longer dipped beam range (approx. gen headlight for dipped beam: the following advantages for dipped 70 m/230 ft). This is due to the high beam: installation position of the headlight • Very high luminous flux above • High color temperature for good • High luminous flux the road and the arrangement of the color perception lighting components. • Considerably more light in the Like the halogen headlight, the Bi-Xenon extreme range of the light/dark limit The high beam emitted by the H9 bulb headlight can also be used for daytime provides good range, which is particu- running lights. • More defined light/dark limit result- larly important when driving at high ing in less dazzle for other road users speeds.

• Homogenous illumination of the entire lane

• Broader lateral illumination than with the previous model resulting in greater safety, particularly when driving around tight corners

Figure 107: Illumination range for dipped beam

83 Figure 108: Illumination range for dipped beam

Figure 109: Illumination range for high beam

The headlight washer system, stan- is now located directly in front of the dard for the Bi-Xenon main headlight, headlight. The water spray is routed in has been moved from the new main the direction of movement of the vehi- headlight and integrated in the front cle. This means that instead of deflect- end. It uses a chrome-colored cylinder ing the water spray, the air flow actually that extends with the pressure of the increases its speed of delivery. spray water when the system is activated. The increased pressure of the spray jet ensures an optimised cleaning process. The “triangular trim” around the headlight has been done away with to give the headlight an even greater impression of quality. The position of the spray jet has been optimised in comparison with the previous model and

84 8.2 Rear light unit and high-level third brake light

The new rear light unit is elegantly integrated in the wing. Red and clear glass function areas ensure a homogeneous and highly refined appearance. The brilliance of the lights is reinforced by the horizontal stripe design of the lens and the metallised housing surface. The rear light unit has been com- Figure 110: Rear light unit Figure 112: High-level third brake light pletely redesigned and reduced in size to fit in with the new line of the rear side The new LED technology has a num- section and the vehicle rear. It combines ber of clear advantages in terms the rear fog light, indicator light, revers- of service life and response time. ing light, reflector, brake light and tail The response time of bulbs is around light in one housing. The rear fog light is 100 ms. LEDs in contrast respond after located on the outside of the driver’s around 0.1 ms. This difference trans- side in this configuration. The side mark- lates to a distance of approx. 3 m/9.8 ft er light and reflector required for the at a speed of 100 km/h / 62 mph. USA markets are also integrated in the Earlier indication of an intention to brake light unit. means more time for other drivers to react. LEDs also generally have a serv- Particular attention has been paid to the ice life of in excess of 10,000 hours new night-time design of the Boxster while bulbs need to be replaced after on- when it comes to the rear view also. ly 200–1,000 hours. Whereas the tail light on the previous model illuminated just one light chamber, the tail light in the new rear light illuminates three tail light chambers and so continues the typical Porsche night- time look to the rear view also. The bulbs in the rear lights are designed for long life to help reduce the cost of ownership.

The new high-level third brake light is executed using LED technology and has been designed to fit in perfectly with the new styling of the rear of the Boxster. A striking feature of the light is the silver-grey lens, which gives the rear of the vehicle a more powerful appearance.

Figure 111: Night-time design

85 8.3 Exit lighting/coming home 8.4 Wiper system 8.5 ParkAssist lighting The wiper system features two wiping The parking sensors of the optional The addition of automatic coming speeds and an interval setting. They ParkAssist system on the new Boxster home lighting to the exit lighting repre- are controlled by means of three posi- have been even more discreetly inte- sents yet another major increase in tions of the right-hand steering column grated in the rear end. They are convenience. Automatic coming home stalk. The custom wiping interval is set inserted from the back into a bracket light is preselected by moving the light via a potentiometer in the steering attached to the rear apron and clipped switch to the HOME position. column stalk. into place. This new technology means Having the wiper controlled via the that securing rings which would be When the door is opened or the vehicle vehicle electrical system control unit visible from the outside are no longer is unlocked using remote control, the means that additional information is required. This further improves the front fog lights, tail lights and licence available for automatic regulation of the homogeneous appearance of the plate lights come on for 30 seconds wiping speed and for error diagnosis. rear apron. to illuminate the surroundings. For example, the control unit can tell In vehicles with PCM and Sport Chrono from data transmitted by the sun-posi- Package Plus, the duration for which tion sensor in the automatic climate con- the lights stay on can be changed in the trol system (optional) that it is dark out “Individual Setting/Light” menu option. and can then regulate the wiper mode The sun-position sensor in the optional more sensitively if the rain sensor is acti- automatic climate control system vated. The wipe/wash function is con- monitors the ambient brightness to trolled in the same way. The wiper func- prevent the lights being switched on tion is automatically set to level 2 at unnecessarily. speeds above 110 km/h / 70 mph to provide the driver with a clear view as quickly as possible.

A rain sensor integrated in the foot of the interior mirror is available as an option (in combination with automatically adjustable mirrors). When it rains, the wiping speed is automatically and continuously selected to suit the conditions. The sensitivity of the rain sensor can also be set via the potentiometer in the steering column stalk.

Figure 113: ParkAssist sensors

86 8.6 Door mirrors /interior mirror 8.8 HomeLink®

The door mirrors have been com- An integrated garage door opener pletely redesigned and represent an is being offered for the first time for important element in the new exterior the Boxster with HomeLink® (optional). styling. They are connected to the mirror HomeLink® replaces up to three attachment point finishers via a double hand-held transmitters with a single arm, which gives them a more sporty system which is permanently installed appearance. A redesigned mirror hous- in the vehicle and operated from the ing allows the mirror glass to be vehicle interior. It can be programmed placed deeper in the housing. This to the frequencies of most normal hand- provides better protection for the Figure 114: Door mirror held transmitters used to actuate mirror glass against turbulence and garage door and gate systems. It can possible vibrations at high speeds. 8.7 Interior lighting also be used to control lighting and Both door mirrors are electrically alarm systems once these are equipped heated and adjustable and, in the case The interior lighting in the Boxster is with the appropriate radio receivers. of fully electric seats or adaptive sports based closely on the concept used in seats, are interfaced with the memory the previous model. New are the white function. An automatic anti-dazzle LEDs for instruments and controls, feature is available for both door mir- which offer significantly better illumi- rors and the interior mirror upon request nating power than the yellow LEDs (optional in combination with the rain used in the previous model. This has sensor). The mirrors can also be folded improved the readability of the instru- in and locked, for example to protect ments, particularly at dawn and dusk. them. The white light of the new LEDs is also much more comfortable for the human The interior mirror has been retained eye. Another advantage is that yellow from the previous model. The LED and red warning symbols and lights orientation light is positioned in the now stand out more. The white light- interior light module. An automatic ing gives the interior a very high- anti-dazzle feature is available for the quality appearance, which creates an interior mirror (optional, only in com- extremely pleasant ambience. Two bination with rain sensor and automatic footwell lights have also been provided anti-dazzle door mirrors). for better illumination of the passenger The styling of the automatic anti-dazzle compartment. interior mirror has been adapted to reflect the new interior design.

87 8.9 Instruments The dot matrix display is still integrated in the center round instrument under- The instrument cluster of the Boxster neath the rev counter and now displays was reworked during the redesign of additional functions such as the RDK the interior. menu (optional from MY06) or the stop- It still comprises three individual watch from the Sport Chrono Plus pack- instruments, however they are now age (optional). spaced further apart. This has enlarged the display areas and The warning lights, which were previ- improved readability. ously located underneath the round in- The dials in the S model are finished struments, have been incorporated into in light grey to distinguish them from the dials so that they are more directly the dials in the basic model, which are in the driver’s field of vision. finished in black. As in the interior, the lighting is white here also.

The three round instruments feature permanent analogue displays for speed, engine speed, fuel level and coolant temperature. There are also permanent digital displays for total mileage and trip mileage (left), time and exterior temperature (right) and centred underneath the tachometer, the speed currently being driven.

The now standard on-board computer allows the driver to call up the average speed, average fuel consumption, remaining range, tire pressure (with the

RDK option as of MY06) and navigation Figure 115: Boxster instrument cluster instructions (with the PCM option) via the lower left-hand operating lever on the steering wheel. The digital display at the top is reserved for speed, however the lower two fields in the display field beneath the tachometer allow a wide range of information to be displayed and called up. The information available depends on the equipment installed in the vehicle.

Figure 116: Boxster S instrument cluster

88 Figure 117: Operating lever for the windscreen Figure 118: Cruise control operating lever wiper/washer function

8.10 Steering column stalk 8.11 Cruise control

The steering column stalks have been The operating concept of the cruise redeveloped and in the process the control has been optimised. The new haptic (touch and feel) characteristics operating lever attached beneath the have also been improved. The interval wiper level now has 4 operating direc- switch for the window wiper has been tions instead of 3 as before. The integrated in the right steering column command for “Interrupt” is executed stalk. The lower steering column stalk by pressing the lever downwards. The for the optional cruise control has been command for “Resume” is executed by redesigned to make it more intuitive. pressing the lever upwards. The com- A one-touch indication function which mand for “Decelerate” is the same as causes the direction indicator to flash the command for “Accelerate”, the only three times has been integrated in the difference being that the driver pulls the left stalk. Beneath this is the operating lever forward to slow down and pushes lever for the on-board computer. the lever forward to speed up.

On top of that cruise control can now be used in first gear and offers an extended speed range of 30 to 240 km/h / 19 to 150 mph for the new Boxster (previous model: 40 to 210 km/h / 25 to 131 mph).

89 8.12 Heating/air conditioning The air conditioning system and automatic climate control differ visually from The new Boxster and Boxster S now fea- the previous generation through a new ture a manual air conditioning system control interface in the center console. with combined interior air filter (active The main changes to the control inter- carbon and pollen) as standard. Auto- face are: matic climate control is available as an option. • Integration of the interior temperature sensors for the optional

Both units are based on the previous automatic air conditioning system Figure 120: Air conditioning control panel systems, but have been revised to en- (previously in the dashboard on the sure more even and comfortable ventila- passenger’s side)Integration of the The integration of the switches for seat tion of the passenger compartment. switches for heating the driver’s and rear window heating in the air condi- and passenger’s seats (previously tioning control interface has resulted in These new climate control systems: in the center console) a logical overall concept in the new • ensure more even ventilation of the Boxster. All of the air conditioning func- passenger area, • Integration of the button for heating tions in the vehicle are now together in •are less prone to draughts, the rear window (previously located a single unit. •are quieter and beside the operating unit) • offer a greater range of functions. • Introduction of switches for adjusting The air conditioning system, in which the temperature and fan power the desired cooling power can be infi- (previously plus and minus buttons) nitely selected via a rocker switch, controls the conditioned air mixture by mix- • Labelling of the button for switching ing warm and cold air in the heater box. the air conditioning compressor on and off with “ECO” (a symbol of The optional automatic climate con- a snowflake was previously used) trol is operated via the corresponding switch with presetting of the desired temperature. This is kept constant via the familiar temperature- and sun-sensor parameters as well as the mixture of warm and cold air in the heater box.

Figure 119: Air conditioning

90 Improvements in more detail: 8.13 Ignition lock with one-key Once the key is positively identified and The entire air conduction system has system the initial resistance is then overcome been reworked to make it more efficient. with the key, the starter is activated The redesigned air distribution system The ignition key of the Boxster – like and the engine starts. In order for this with larger, more uniform pipe cross the 911 Carrera/S – has been restyled. to happen, the clutch pedal must be sections and optimised lateral distri- The function of the buttons for unlocking depressed in vehicles with manual gear- bution for the left- and right-hand sides the vehicle and luggage compartments box or the brake pedal depressed and of the vehicle in particular ensure more has not changed, however they are now the selector lever set to “P” or “N” homogeneous air conditioning for the made from a high-quality plastic for in vehicles with Tiptronic S. passenger compartment. greater stability and a more comfortable feel. The remote control transmitter The new design of the air conduction has had its range increased by ap- 8.14 Power windows system ensures the availability of a prox. 50 % so that it can be used from greater volume of air. This means that distances of up to 15 m/49.2 ft regard- The power windows feature the usual with the same air throughput, the same less of the position of the key in relation functions for short-stroke lowering, anti- level of ventilation as before can be to the vehicle. pinch protection and one-touch opera- achieved by reducing the power of the tion. The controls for the power win- fan. The advantage of this for the cus- Like the 911 Carrera/S, the new Boxster dows are now located in the door-trim tomer is two-fold: fewer draughts and features an electronic ignition lock panels along with the memory buttons less flow noise. and an electromechanical steering for the optional fully electric seats. The column lock for increased anti-theft switches are characterised by a typical The redesigned passenger vents in protection. Individual components can- ergonomic Porsche design. the dashboard permit a higher degree of not be replaced without the use of spe- individualisation for the driver and pas- cial testers and access codes belonging senger. The increased vertical and hori- to the vehicle. zontal adjustment range of the vents and the separate left/right knurled wheel If the steering wheel is strained, a for the center vent permit a more per- warning is displayed in the instrument sonalised air setting than was previ- cluster and the driver is asked to move ously possible. the steering wheel so that the strain can be released and the steering wheel unlocked.

Figure 121: Ignition key Figure 122: Power windows

91 8.15 Networking 8.16 Sport Chrono Package/Sport 8.16.1 Analogue stopwatch Chrono Package Plus Electronic networking in the Boxster The analogue stopwatch is a visual indi- allows data and electrical information The Sport Chrono Package/Sport cation that the vehicle is fitted with the to be exchanged between various Chrono Package Plus is available as an Sport Chrono Package/Plus. control units throughout the vehicle. option in the new Boxster. Both options This is realised with the aid of the inter- include: It is swivel mounted on the dashboard nal high-speed network, the so-called (for use by the driver/passenger) and CAN-BUS (Controller Area Network), • an analogue stopwatch on the provides an analogue display of the and the fibre-optic network, the so-called instrument panel hours, minutes and seconds which MOST®-BUS (Media Orientated System • Sport mode for engine, PASM and have elapsed since timing started. Transport). PSM as well as the Sport button for Seconds, tenths of seconds and hun- activating it dredths of seconds can be read off the In the new Boxster, up to 29 control integrated display. A digital display units can be exchanging up to 2 MB of When twinned with the optional Porsche runs in parallel in the instrument data per minute via the CAN bus at any Communication Management (PCM), the cluster. The stopwatch is activated by time. Approx. 2,500 different signals Sport Chrono Package becomes the selecting the Chrono menu in the instru- have been defined to this end. Network- Sport Chrono Package Plus and of- ment cluster (by pressing the on-board ing reduces the number of connections fers the following additional scopes: computer lever). Recording of lap required so that the total length of ca- times can be initiated by starting the bling required can be kept significantly •a performance display in the PCM stopwatch. It is ended by stopping the shorter. as well as stopwatch. The lap times can be stored • an individual memory. for subsequent evaluation. Most of the network connections can be found in the following areas: The Sport Chrono Package/Plus offers the customer a complete package which • In the area of engine management increases driving pleasure by improving for high-speed information exchange. lap times and the agility of the vehicle.

• In the area of coordination of networked control engineering. Thus a PSM braking operation, for example, involves the control units for the brakes (PSM), engine and Tiptronic S.

• In the area of audio/communication for the joint transmission of digital audio and control data via the so- called MOST®-BUS.

• In the area of vehicle weight. Net- work connections have facilitated a reduction in weight of approx. 5 kg/ 11 lbs in the new Boxster, even though functionality has been extended.

Figure 123: Analogue stopwatch from the Sport Chrono Package/Plus

92 8.16.2 Sport mode/Sport button

The driver can select a sportier setup by pressing the Sport button in the center console. A certain amount of comfort is sacrificed in this mode for the sake of sportiness.

As soon as the Sport button is

pressed to activate Sport mode, the Figure 125: Sport button in the center console word “Sport“ appears in the instrument cluster display and the following These functions are described in detail systems are switched to “Sport“: in the chapters on the engine and chassis. The figure shows the possible com- • Engine functions binations of Sport mode, PASM und PSM o More dynamic acceleration pedal and their effects on the stability/agility characteristics of the vehicle. o More abrupt high-speed cut-off o More sporty load cycle behaviour

• Porsche Stability Management (PSM)

• Porsche Active Suspension Manage- ment (PASM) (optional)

Figure 124: Stopwatch displays in the on-board computer

Figure 126: Possible Sport mode, PASM and PSM combinations

93 8.16.3 Performance display The performance display provides the in the PCM following options:

The Sport Chrono Package Plus includes • Recording the time profile for any the addition of a “performance route section display” in the PCM display system. This performance display and the stop- • Driving against a pre-recorded watch can be used to record the fastest reference lap with real-time analysis lap times or route times and archive them for subsequent analysis. They al- • Displaying the lap currently being so allow the driver to race against a driven stored fastest reference lap. The comparison of the reference lap and • Displaying the remaining range in the current lap is performed in real time km / miles and the resulting remaining based on the route section currently be- number of laps ing driven. The color-coded representa- tion used for the real-time analysis (red, • Evaluating and managing recorded yellow, green) shows the driver’s time routes profile in comparison with the reference lap, even under sporty driving condi- The display is operated in the familiar tions. The laps can be displayed in the way via the PCM operating panel. form of a bar chart.

Figure 127: Sport displays in the PCM Individual memory

94 8.16.4 Individual memory

The individual memory allows extended vehicle settings to be made via PCM. These settings are individually assigned to the respective ignition key. Each time the key is inserted in the ignition lock, the stored settings are automatically activated via PCM.

The following individual options are available:

• Daytime running lights on/off

• Comfort lighting duration adjustable from 10 seconds to 120 seconds

• Automatic climate control: Save basic setting (e.g. 23°C/73.4°F, fan set to maximum output and defrost on)

• Unlocking opens all doors or just the driver’s door

• Autolock: Off, on upon ignition or active after moving off

All settings can be made in the “Indi- vidual Memory” menu, which is called up via “Set” in the PCM main menu.

Figure 128: “Individual memory“ displays in the PCM

95 9 Safety and security As well as unlocking via remote control, 9.2 Active safety the vehicle can also be unlocked in an 9.1 Anti-theft protection emergency via the door lock cylinder All Porsche vehicles have to fulfil very in the driver’s door. Only the interior sur- high active safety requirements. The Boxster can be optionally fitted with veillance system and the door contact They do this through their superior an anti-theft alarm system including on the driver’s side are deactivated, driving performance and excellent interior surveillance. The Boxster S however - not the anti-theft alarm sys- braking performance, among other is fitted with the anti-theft alarm system tem. If the ignition key is not inserted things. This applies equally to the as standard, the interior surveillance is and successfully identified using the Boxster and the Boxster S. With plentiful available as an option. transponder housed in the key within reserves of acceleration and torque The anti-theft protection system is 15 seconds, the alarm will be triggered. on tap, it’s extremely easy to overtake essentially the same as in the previous If the door on the new Boxster and and the brakes permit rapid and stable model. New scopes will be briefly Boxster S models is not opened within deceleration in an emergency. illustrated below. 20 seconds of being manually unlocked, it is automatically locked again and all The chassis ensure superior agility, high Interior surveillance is now performed alarm contacts and radar interior surveil- possible lateral acceleration and very using a radar sensor instead of an lance activated. good driving stability. The optional infrared sensor. The advantage of this is PASM chassis offers clear advan- that reflections from particularly bright tages again when it comes to driving interior leathers are no longer detect- stability through automatic activation ed as warning signals. This means that of different damper characteristics interior leathers in colors to sample can depending on the driving style and road be used without any problem. surface. For example, the dampers are The alarm contact for the storage switched to a more stable shock absorp- bin in the center console is no longer tion setting even in normal mode to required since the bin can no longer be increase active driving safety at top locked, the alarm contact for the glove speed. This reduces the tendency of compartment remains. the body to tilt when changing lanes or performing evasive manoeuvres and considerably improves the driver’s control over the vehicle.

Figure 129: Boxster

96 Figure 130: Boxster

The revised PSM, now standard, offers The following points, which are of major a major improvement in stability significance for high active safety, have even on the most treacherous road sur- been further improved on the new faces or at the limits of the car’s driving Boxster: dynamics. The continued development of PSM has resulted in an improved control • Safer behaviour during lane changes, quality and therefore a shorter braking even at high speeds distance, while retaining all of the known benefits of the system. • Very good acceleration potential and driving stability The operating concept of the new Boxster has been optimised throughout • Very high potential lateral acceler- to ensure reliable operation of all func- ation tions in any given driving situation. This, together with an excellent panorama • Agile, direct and targeted steering view for a roadster, is an important contribution to active driving safety. • Very short braking distances

The new headlights with their im- • High level of braking stability during proved road illumination and the re- cornering and straight-ahead driving sultant improved view for the driver, particularly at high speeds, also contribute • PSM control system to assist the to active driving safety. driver when exploiting the vehicle’s performance to the full

97 9.3 Passive safety The window slot reinforcement of the In addition to the existing 3-point auto- doors has also been optimised. This matic belts with belt tensioners and The new Boxster complies with all of reinforcement additionally transfers the belt-force limiters, the Boxster is fitted the relevant standards on passive vehi- forces introduced in a frontal impact to with six airbags as standard. This in- cle safety in the relevant markets. In fact the rear of the vehicle via an upper cludes two new fullsize front airbags it improves upon the limits prescribed door load path and a support on the and the newly developed POSIP in legislation for frontal, oblique, side rear side section. This has further (Porsche Side Impact Protection) system and rear impact as well as overturning. improved the deformation behaviour and which now comprises a thorax airbag In order to satisfy the increased re- the integrity of the passenger cell integrated in the side of the backrest of quirements for frontal impact, a new (important for protecting passengers). the seats and a new head airbag in the bulkhead cross member made of high The newly developed roll-over bar door on each side of the vehicle. strength steel has been used in the front is now higher and further back. It is of the vehicle. The purpose of the bulk- made of austenitic stainless steel, a head cross member is to absorb the special stainless steel alloy that offers forces introduced by the front side mem- maximum strength, and is manufactured ber structures in the event of a crash, to using IHPF technology (internal high-pres- reduce deformation in the footwell and in sure forming). This new manufacturing doing so to ensure better protection for method and an optimised design have occupants. permitted a 30 % increase in strength. These measures combined with the new Reinforcement of the overall vehicle seats and their higher headrests have structure has been mainly achieved permitted a further improvement in through the use of the spot the already impressive passenger welding/bonding method and through survival space of the previous model. the revised joint design.

Mild Steel

Tailored Blanks

High Strength Steel

Ultra High Strength Steel

High Strength Austenitic Stainless Steel Aluminium

Figure 131: Body carcass

98 Figure 132: Airbags

Front airbags: Porsche Side Impact Protection System large side airbags, which were either In addition to the crash sensor integrat- (POSIP) housed in the seat or in the door-trim ed in the airbag control unit on the cen- The new Boxster is among the first cars panel. A separate head airbag which ter tunnel, there are two sensors in the on the market to use the new genera- works in the same way as a curtain front of the vehicle mounted near the tion of the standard Porsche Side Im- airbag but unfolds upwards from the headlights for detecting the point and pact Protection System (POSIP). It now window channel instead of downwards direction of impact. This enables earlier comprises two airbags per side: a tho- has been developed for the new Boxster. and more accurate sensing of crash- rax airbag and a head airbag. With a volume of approx. 8 litres/ es, particularly complex impact scenar- 0.3 cu ft also, this airbag offers effec- ios such as offset crashes. This has the A specially adapted thorax airbag is tive head protection. In the event of a major advantage of further reducing now integrated in both the driver’s and side impact the head airbag unfolds in passenger injuries in a crash. passenger’s seat to protect the upper the shape of a protective cushion. Like body in a side impact. In the event of the thorax airbag, the head airbag is al- As on the previous model, the passen- a crash the airbag, which has a volume so inflated using a hybrid generator. ger airbag is housed in the upper area of approx. 8 litres/0.3 cu ft, is inflated The sensors for detecting a side im- of the dashboard. The airbag flap, which by a gas generator based on hybrid pact and thus for activating the side used to be visible, has now been inte- technology. airbags are located in the airbag con- grated in the dashboard to produce a trol unit on the center tunnel and in the more homogenous styling effect. In com- As well as having a thorax airbag, the area of the side sills. bination with the leather interior, decora- Boxster is the first open car in the tive seams hint at the styling of the world to be fitted with a separate airbag cover. head airbag in the door. The head airbags in closed vehicles are executed as curtain airbags, so-called because they unfold down from the roof rail like a curtain. Up to now, this type of airbag could not be used in open vehicles. Instead the previous model featured

99 Passive security in the passenger compartment The seat belts and the standard airbags offer excellent protection in a crash. This protection is further enhanced by a safety-oriented passenger compartment design. Energy-absorbing structures in the dashboard and, for example, the A-pillar linings reduce the injuries suffered by passengers in the event of a crash. The headrests in the new Boxster have been increased in height by 50 mm/ 2.0 in and moved closer to the head to increase protection against whiplash. As a result they now offer even better head support in crashes.

100 10 Environment be used) sheet steels, aluminium cast to expand the corresponding markets. alloys and plastics. The luggage com- This particularly applies to plastics, Environmental protection has a long partment lid, engine block, cylinder which in recent years account for an tradition at Porsche. For many years, heads, pistons, transmission housing, ever increasing percentage of vehicle the principle of sustainment has suspension control arms, front and rear weight. Pure types of production waste, defined the work of the engineers at axle components, wheels, brake calipers sprues or faulty batches do not neces- the Porsche Development Centre, and oil cooler are all examples of where sarily have to be disposed of as waste. Weissach, in their search for solutions aluminium has been used in the body, They can be reprocessed and used as which protect the air, rivers and seas engine, gearbox and chassis to reduce plastic recyclate in the manufacture of and the earth without burdening natural weight. In fact the total percentage of new parts. Bearing in mind the strict resources. All Porsche sports cars aluminium used in the vehicle as a quality requirements of the Porsche comply with all current and some whole is approx. 18 %. developers, recyclates fulfil the same planned worldwide exhaust emission technical requirements as new material. regulations. Porsche vehicles are extremely durable. Examples of parts made of 100 % plas- Even older vehicles have such a high tic recyclate are wheel housing liners, residual value that they are rarely recy- various covers, spoilers, covers and 10.1 Materials/recycling cled. Nonetheless, once they have housings. reached the end of their life they can be Polyester nonwoven stampings have Material selection plays an important adequately recycled using conventional replaced the old polyurethane moulded role in the environmental compatibi- methods to comply with all current foam parts and cotton fibre nonwoven lity of a vehicle. Environmental compati- statutory requirements. The same ap- absorbers. As a unitary system the bility is assessed by examining the plies for the Boxster, approx. 85 % of new components are now 100 % re- entire life cycle of the vehicle from which can be recycled. cyc-lable. The absorbing effect vis-à- provision of the raw materials through Like all Porsche vehicles, the new vis the passenger compartment has also production and utilisation to recycling Boxster models are also free from been optimised through a new floor car- of the end-of-life vehicle. CFCs and parts manufactured using pet composition with nonwoven fabric CFCs. Further only environmentally- reinforcement. Light-weight construction techniques friendly water-based paints are used, contribute to environmental compatibility which reduces the need for solvents in by reducing fuel consumption during the production process. the utilisation phase. Light-weight construction is realised on the Boxster The EU guideline on end-of-life through a high percentage of high- vehicles requires that vehicle manufac- strength (which means less material can turers use more recycling material

Figure 133: Boxster

101 10.2 Noise/acoustics tuning. Among other things, they have permitted a further reduction in tire The Porsche Boxster should be recog- noise. nisable not only from its design and technology, but also the typical Suppressing wind and tire noises Porsche, load-related sound of both has allowed greater emphasis to be the exterior noise and interior noise. placed on the engine sound. The This goal has of course been brought Boxster delivers a typical Porsche sound into line with statutory requirements. in every driving situation without pollut- Porsche engineers have managed to ing the environment with excessive comply with all worldwide noise regula- noise. tions. The insulation (for the passenger com- The increased size of the wheels results partment) has been developed to opti- in a tendency to produce more tire mise the typical Porsche interior sound noise. This problem was addressed in an while retaining the interior noise level. early phase of development and led to The absorbing effect of the components Porsche engineers working with the tire has been improved without fundamental- manufacturers to minimise tire noise ly impairing the insulating effect through through a favourable profile design and the selective use of new insulating rubber mixture. Support bearings with materials. One of the goals in adjusting so-called Celasto inserts have also the passenger compartment sound has been used on the Boxster S, at the up- been to reduce background noise in the per ends of the suspension struts. higher frequency range and to greater These inserts are made of a foamed emphasise the sporty, load-related PUR (polyurethane) and offer advantages exhaust and intake noises between 300 in the area of acoustics and chassis and 600 Hz.

Figure 134: Technological overview of the Boxster

102 11 Audio and communication

11.1 CDR-24 CD radio with sound system

The Boxster series features the new CDR-24 CD radio as standard equipment. It is based on the previous CDR-23 radio, now with considerably enlarged control interface, which significantly improves clarity and ease of operation. The radio also uses the standard white interior lighting, which improves the appearance considerably. Figure 135: CDR-24

All of the old features such as dual 11.2 Sound Package Plus • Door: tuner, 30-station memory (20 USW, 2 x 100 mm/3.9 in mid-frequency 10 MW, plus 9 each for autostore), back- The Porsche Sound Package Plus loudspeakers ground traffic station, top-of-the-range represents the first optional upgrade 2 x 200 mm/7.9 in low-frequency CD drive, etc. have been retained. level in the new Boxster. With its 7 loudspeakers speakers and external analogue The new interior provided an opportunity amplifier, it offers a superior sound The high- and mid-frequency loudspeak- to house new and higher-quality loud- experience and plentiful sound re- ers are driven by the 2 x 25 watt amplifi- speakers in the vehicle. The dashboard serves for all driving conditions. It does er integrated in the CDR-24. An external contains two tweeters, while each of the this through the use of large-size analogue amplifier housed in the lug- doors houses a 165 mm/6.5 in low- loudspeakers of superior quality gage compartment drives the low-fre- range loudspeaker that delivers excel- quency loudspeaker (2 x 70 watt) and lent sound even in the basic version. The following loudspeakers are used: the center loudspeaker (40 watt). The sound system has been adapted to the • Dashboard: specific interior acoustics of the Boxster 2 x 19 mm/0.7 in high-frequency through extensive adjustment of the am- loudspeakers plifiers. 1 x 70 mm/2.8 in mid-frequency loudspeaker (center speaker)

Figure 136: Center loudspeaker Figure 137: High-frequency loudspeaker in dashboard

103 • Engine compartment cover: 2 x 64 mm/2.52 in wide-band loudspeakers (rear speakers) 2 x 130 mm/5.12 in low-frequency loudspeakers (subwoofer)

Audio electronics: • 7-channel MOST® digital amplifier with 5 x 25 watt linear amplifiers, for high-

Figure 138: BOSE® loudspeaker in the Figure 139: BOSE® subwoofer and mid-frequency loudspeakers as door-trim panel well as 1 x 100 watt switching amplifier for the low-frequency loudspeaker. 11.3 BOSE® Surround Sound The BOSE® Surround Sound system, system the second optional upgrade level in the • Additionally 1 x 100 W switching ampli- Boxster, offers the following compo- fier integrated in the active subwoofer. The completely redeveloped BOSE® nents: Surround Sound system writes anoth- • External microphone (housed in the er page in the living history of BOSE® Loudspeakers: steering column cover) for detecting sound systems in Porsche vehicles. It is • Dashboard: background noise in the passenger the first time that a sound system has 2 x 25 mm/0.99 in neodym high- compartment been available as an option in a Boxster. frequency loudspeakers Eleven loudspeakers and a 7-channel (“soft-dome spherical cap”) digital amplifier integrated in the digi- 1 x 70 mm/2.76 in neodym mid-fre- tal MOST®-Bus ensure a sound experi- quency loudspeaker (center spea- ence never before experienced in ker) the roadster segment. • Door: The following settings can be made in 2 x 80 mm/3.15 in neodymium mid- the Sound menu of the radio or PCM: frequency loudspeakers 2 x 200 mm/7.88 in Nd® low-frequen- • Adjustment of the sound using base cy loudspeakers and treble setting

• Adjustment of the sound focus using fader and balance

• Activation of AudioPilotTM

• Activation of Surround sound (BOSE® CenterpointTM technology)

• Fine tuning of the auditory impression when surround sound is active

• Adjustment of the auditory position in Stereo mode (left, symmetric, right)

Figure 140: BOSE® Surround Sound system components

104 The signal processing system exhibits • CenterpointTM signal processing • Dynamic loudness function the following special features: technology The dynamic loudness function in- The Centerpoint system is a surround creases the bass tones when the • Centre fill and SurroundstageTM decoder specially developed for the volume is decreasing. This compen- The additional center fill loudspeaker limited auditory environment in vehi- sates for the reduced sensitivity of in the center of the dashboard is cles. The algorithm used by this propri- the human sense of hearing at these activated using data from the left- and etary BOSE® technology delivers an frequencies. right-hand channel via a special sig- exclusive sound experience with exhil- This process functions much more nal processing system (Surround- arating Surround Sound pleasure. precisely than conventional loud- stageTM). This ensures an optimum The technology also converts conven- ness control systems. The base and balanced sound for all passen- tional audio sources such as CDs, or tones are amplified in such a way that gers. even stereo recordings, into five sepa- there is no audible change. rate audio channels. • Surround (BOSE® CenterpointTM •BOSE® AudioPilotTM technology) • Active electronic equalisation The AudioPilotTM automatically con- BOSE® Automotive Surround Sound In order to achieve a high-fidelity trols the sound and volume as a can be switched on at the touch of a sound experience, BOSE® active function of background noises such button. This system uses additional in- electronic equalisation exactly adapts as wind and tire noise. This functional- dependent audio channels in the front acoustic reproduction to the specific ity ensures a constant acoustic im- and rear of the vehicle to produce a acoustics of the vehicle interior. pact lifelike and high-fidelity 360° sound The reproduction of all frequencies is in all driving conditions, which means experience. The BOSE®-patented sig- adapted so as to ensure that both that the driver does not have to nal processing system increases the passengers enjoy the same superior continuously re-adjust the sound. stereo sound of stereo recordings. sound quality at the same time. The background noises are recorded This results in a much more refined by a special microphone in the steer- sound experience. The sound-effect ing column cover and processed. volume can be adjusted in the Sound A considerable improvement in Set menu (PCM: from –12 to +9, comparison with the system in the CDR-24: 4 levels with off, low, mid previous model has been achieved and high). through the use of additional information (speed, convertible top position, etc.) in the volume control algorithm. As a result, the volume control is now much more robust and almost all unwanted fluctuations in volume have been eliminated.

105 11.4 Aerial system 11.6 Porsche Communication 11.6.1 Navigation Management (PCM) The Boxster features a powerful win- The navigation module has also been dow antenna as standard. As on the The new PCM has been integrated in the thoroughly revised in the course of previous model, antenna diversity is overall design of the new interior and up- development of the new PCM. The new part of the optional PCM. The antenna grades all illuminated components in the navigation module includes a DVD navi- are still housed in the windshield and passenger compartment with a white gation drive in the front luggage com- improve USW reception in the event of LED light. The navigation system is in- partment. This enables constant navi- interference, for example slowly driving tegrated as a module in the system. The gation guidance within an entire part traffic lights. accommodation of the DVD navigation continent for the first time (e.g. West- A rod antenna, which is mounted on drive in the front luggage compart- ern Europe or USA/Canada) since all of the front right wing, is available upon re- ment mean that the CD drive can be the map data can be stored on a single quest at no extra charge to improve the used as a dedicated audio CD drive. DVD. The generous memory depth of medium range reception. This means that the driver no longer has the DVD means that the full digitisation to make the tedious switch between au- depth of the underlying map can now be dio and navigation CDs. accessed. The DVD drive permits much 11.5 CD autochanger/ faster access to map data than the CD autochanger preparation CD drive. This means that route calcu- Various functions of PCM can be con- lations and refreshing of routes can The 6-disc CD autochanger housed in trolled by the new, optional multi-func- be performed faster. The digital map the front luggage compartment has tion steering wheel. Among other now has considerably more zoom been retained from the previous model things, this multi-function steering wheel levels for greater magnification of the and is available as an option. has a so-called screen key that can be map material. Each vehicle is fitted with a CD auto- assigned different PCM functions. These changer preparation as standard. functions are programmed in the Set This consists of a light waveguide menu of PCM. (MOST®) and a cable for the power supply so that a CD autochanger can be easily retrofitted.

Figure 141: CD autochanger Figure 142: PCM

106 11.6.2 Telephone module 11.8 Passive handset

The handsfree system of the optional The console for holding the passive telephone module has been further handset has been adapted to the new improved with regard to speech interior and directed more towards quality. The microphone has been the driver’s seat for more convenient moved from the instrument cluster to operation. the steering column, thereby focusing the directional characteristic more on the driver. A triband telephone module Figure 143: Passive handset (900, 1800, 1900 Mhz) which will also be available for the USA market will be available from 12/04.

11.7 Mobile phone preparation

As before a preparation for using a mobile phone is available in combination with the now standard radio. A mobile phone preparation for the new PCM will also be available specifically for the USA. The mobile phone preparation includes the aerial, located in the radiator tank in front of the windscreen, the wiring loom, the microphone for the handsfree function, the VDA interface for the adapter kit and an attachment console for the telephone holder. The telephone-specific adapter kit can be retrofitted at any Porsche Centre or mounted in any American Porsche Centre.

107 12 Equipment (EU model)

12.1 Standard equipment (EU model)

O = Standard o = Optional Boxster Boxster S Engine:

6-cylinder horizontally opposed engine, aluminium block and cylinder heads, water cooling, four-valve technology, OO “VarioCam” camshaft adjustment, hydraulic valve clearance compensation, integrated dry sump lubrication, electronic engine management (Motronic ME 7.8), electronic accelerator pedal, hot-film air flow sensor, sequential fuel injection (Multipoint), cylinder-specific knock control, two three-way catalytic converters, stereo Lambda control circuits, individual ignition coils, static high-voltage ignition system, variable double-chamber resonance intake system, idling control, On-Board Diagnosis system for monitoring the emission control system

• Displacement: 2.7 l (163.96 cu in) O • Maximum output: 176 kW (240 HP) @ 6,400 rpm • Maximum torque: 270 Nm/199 lbs/ft @ 4,700–6,000 rpm • Brushed-look oval tailpipe

• Displacement: 3.2 l (193.98 cu in) O • Maximum output: 206 kW (280 HP) @ 6,200 rpm • Maximum torque: 320 Nm/236 lbs/ft @ 4,700–6,000 rpm • Brushed-look dual tailpipes Transmission: 5-speed manual gearbox with dual-mass flywheel O

6-speed manual gearbox with dual-mass flywheel O Chassis:

Spring strut (type: McPherson, Porsche-optimised) with anti-roll bars front and rear, rack-and-pinion power steering OO with variable steering ratio, Porsche Stability Management (PSM) with ABS, ASR, ABD and MSR

6.5J x 17 RO 55 Boxster II alloy wheel with 205/55 ZR 17 tires at front, O 8J x 17 RO 40 Boxster II alloy wheel with 235/50 ZR 17 tires at rear

8J x 18 RO 57 Boxster S alloy wheel with 235/40 ZR 18 tires at front, O 9J x 18 RO 43 Boxster S alloy wheel with 265/40 ZR 18 tires at rear

Tire sealing compound and electrical compressor [spare wheel and jack in the rear luggage compartment in the OO following countries: Saudi Arabia, Brazil, Virgin Islands and Israel.] Brake system:

4-piston aluminium monobloc fixed-caliper brakes with internally ventilated and perforated brake discs front and rear, OO ABS 8.0 (integrated in PSM), pad wear sensors on each pad

Power-boosted brake system (front disc diameter: 318 mm/12.5 in instead of 298 mm/11.7 in, O disc thickness front and rear + 4 mm/0.2 in)

Brake calipers anodised black O

Brake calipers painted red O Body:

2-seater roadster with two luggage compartments (front: approx. 150 l, rear: approx. 130 l), shell hot-dip galvanised OO on both sides, aluminium luggage compartment lid front and rear, roll-over protection (incl. reinforced A-pillar, roll-over bar), 3-layer convertible top with heated glass rear window, automatically extending/retracting rear spoiler, bow-type door handles, door stops with 3 index positions, side windows with water-repellent coating, underbody lining

Front apron with additional third air inlet O

Black air inlet grille in the front apron, titanium-colored logo on rear lid O

Titanium-colored air inlet grille in the front apron, silver-colored logo on rear lid O

Windscreen with grey top tint OO

108 O = Standard o = Option Boxster Boxster S Passive safety:

Deformable front end and rear end with integral light-alloy bumpers mounted on impact elements OO

Passive restraint system: OO • 3-point automatic seat belts, belt lock on seat, belt tensioner and belt force limiter • Airbags for driver and passenger • Porsche Side Impact Protection System (POSIP) comprising: o Head airbags integrated in door-trim panel o Thorax airbag integrated in side bolsters of seats o Side-impact protection elements in each door

Preparation for ISOFIX child-seat mounting, preparation for child seat detection OO Interior:

Driver and passenger seat with electric backrest adjustment and manual length and height adjustment, headrests OO integrated in seats, partial leatherseats (leather finish in standard color: seat center, seat side bolsters and headests)

3-spoke steering wheel (leather) with manual reach and height adjustment OO

Standard interior in standard color [Boxster only] (Boxster S only): OO • Grained leather finish in interior color: steering wheel rim, door handle front side, handbrake lever handle, shift or Tiptronic S selector lever, (door armrest lid, center console storage bin lid) • Volcano Grey: instrument cluster frame, lower part of handbrake lever, [decorative dashboard trim, shift/selector lever clasp], Y-shaped standard steering wheel cover, seat controls trim, seat fitting trim, backrest release trim, clothes hook on rear seat backrest, roll-over bar • Aluminium-look finish: steering wheel spoke covers, door opener, glove compartment handle, head airbag crest, shift lever trim, decorative side and center vent rings, seat controls, backrest release, (shift/selector lever clasp, decorative dashboard trim, shift lever cap) • Plastic parts finished in soft-touch paint • Sun visors in black plastic film

Lockable, large glove compartment, storage bins in the doors and the center console (front and rear), OO two separate cup holders (integrated behind the decorative dashboard trim)

Illuminated vanity mirror in the swivelling sun visors (driver and passenger sides) OO

Home Link (integrated garage door opener) OO

Door entry guards with Boxster or Boxster S logo OO

Pedals in sports look OO Electrical system:

Electric windows with one-touch open/close facility and short-stroke lowering, windscreen washer system with OO 2 wiping speeds and adjustable intermittent wipe cycle, heated windscreen washer nozzles, electrically adjustable and heated door mirrors (double-arm), aspherical on driver’s side

Electrically operated convertible top with automatic lowering and closing of the side windows OO (operated using a one-touch/tip function up to 50 km/h / 30 mph)

Double-height CDR-24 radio as standard incl. 4 high-quality loudspeakers, preparation for CD autochanger retrofitting OO

Sound Package Plus (with loudspeakers and CD storage tray in glove compartment) O

Uniform lighting concept with automatic deactivation for the entire interior, continuously variable dimming in white, OO footwell lightin

Cruise control OO

Central locking with remote control incl. release for front/rear luggage compartment OO

Immobiliser (transponder system), safe locking system OO

Alarm system with radar interior surveillance O

109 O = Standard o = Optional Boxster Boxster S Lighting system:

Modular clear-glass halogen main headlights (projector-type) with integrated indicator light, separate additional lights OO in the front end with marker light and fog light, rear fog light on driver’s side

Automatic coming home lights OO Instruments:

Instrument cluster: three analogue round instruments (speed, engine speed, coolant temperature, fuel level) OO integrated in the cockpit, central rev counter with integrated multi-function display, permanent digital display of total and trip mileage, time and exterior temperature as well as speed, on-board computer over multi-purpose display

Instrument cluster with black dials O

Instrument cluster with light grey dials O Air conditioning:

Air conditioning with integrated active carbon filter+pollen filter, green-tinted heat insulating glass OO

Table 10: Standard equipment (EU model)

110 12.2 Individual equipment for MY05

O = Standard o = Optional W = Available at no extra cost Boxster Boxster S

I-No. Description Exterieur Code Metallic paint oo Code* Special colors oo Code* Colors to sample oo P74 Bi-Xenon headlights oo 498 Deletion of model designation WW 635 ParkAssist (rear) oo P12 Automatically adjustable interior/door mirrors on driver’s and passenger side, incl. integrated rain sensor oo 550 Hardtop oo 551 Wind deflector incl. storage box on engine cover oo XMK* Roll-over bar in exterior color oo Engine, transmission and chassis 249 Tiptronic S oo 450 Porsche Ceramic Composite Brake (PCCB) o 475 Porsche Active Suspension Management (PASM) oo P04 Sport package (6-speed manual gearbox and PASM) o 639 Sport Chrono Package oo 640 Sport Chrono Package Plus (only in combination with PCM) oo XLA** Chrome-plated stainless steel tailpipe oo XCZ* Short shifter oo (greater than the standard reduction to further reduce the shift throw) Wheels 397 18-inch Boxster S wheel o O 403 19-inch Carrera S wheel oo 405** 19-inch Carrera Classic wheel oo 407** 19-inch SportDesign wheel (vgl. S. 50, Fig. 61) oo 446 Wheel centres oo XD9* Painted wheel spokes oo 482/ Tire pressure monitoring system (RDK) oo 483***

111 O = Standard o = Optional Boxster Boxster S

I-No. Description Interior 573 Automatic air conditioning oo Instrument cluster dials in: oo XFD /XFE • Interior color (Sand Beige, Terracotta, Natural Brown) /XFF*

XFG • Exterior color (Guards Red, Speed Yellow, Carrara White) /XGH /XFJ* (Note: available in special color or color to sample as Exclusive Special Order) 534/ Alarm system with radar interior surveillance o 535 534/ Radar interior surveillance o 535 P15 Fully electric seats oo (electric adjustment of all seat functions, incl. memory function for seat, mirror and lumbar position settings for driver’s seat) P77 Sports seats oo (leather, manual fore/aft and height adjustment and electric backrest adjustment) P01 Adaptive sports seats oo (electric adjustment of all seat functions additionally with 4-way adjustment of the side bolsters, incl. memory function for seat, mirror and lumbar position settings for driver’s seat as well as both door mirrors) 342 Heated seats oo Seat belts in: oo XSH • Silver Grey XSX • Guards Red XSY* • Speed Yellow XME* Rear center console painted in exterior color oo 509 Fire extinguisher oo (DIN EN3 powder fire extinguisher containing 1 kg of extinguishing agent, accommodated in the front under the driver’s seat) Leather 982 Soft ruffled leather seats oo (soft ruffled leather on seat center (5.1) (only in combination with leather interior)) Code Leather interior in standard color oo (leather finish in smooth finish: upper part of dashboard incl. airbag cover (2.0a), instrument cluster cover (2.0b), lower part of dashboard incl. three-part glove compartment lid (2.1a), door-trim panel incl. head airbag cover (3.0a), door mirror (3.0c), center console front side trim (4.0a), seat base (5.0), seat center (5.1), seat side bolsters (5.3a)) Code* Leather interior in special color (Terracotta, Cocoa) oo (leather scope same as standard colors) 970 Two-tone leather interior oo (combination of the colors Black and Stone Grey; same features as leather interior in standard color)

112 O = Standard o = Optional Boxster Boxster S

I-No. Description Leather 998* Natural leather interior (Natural Brown or Natural Dark Grey) oo (same features as leather interior. With Natural Dark Grey leather, plastic parts painted in soft-touch paint in Black) Code* Leather interior in color to sample oo (Custom color. Leather scope same as standard colors. Exceptions: 3-spoke steering wheel with leather-covered rim, shift/selector lever (4.1a) and handbrake lever grip in black; plastic parts painted in soft-touch paint in Black) E32* Additional interior package with dashboard in leather oo (leather finish in interior color: side vent vanes (incl. adjusters) (2.5b), center vent vanes (incl. adjusters) (2.6b), dashboard loudspeaker cover (center, 2.8b)), defroster trim (2.4a), decorative dashboard trim incl. cup holder trim (2.3) XTV* Additional interior package with door-trim panels in leather oo (leather finish in interior color: door handle trim (3.2c)) XNG* Leather instrument cluster frame oo (leather finish in interior color: instrument cluster frame (2.0d)) 459 3-spoke steering wheel in smooth leather oo (smooth leather finish in interior color: steering wheel rim (with cross-stitched seam, 2.2a) and airbag module (2.2b)) 435 3-spoke sports steering wheel in leather oo 460 3-spoke sports steering wheel in smooth leather oo (smooth leather finish in interior color: steering wheel rim (with cross-stitched seam, 2.2a) and airbag module (2.2b)) XPA* Padded 3-spoke sports steering wheel in smooth leather oo (smooth leather finish in interior color: steering wheel rim (with cross-stitched seam, 2.2a) and airbag module (2.2b), steering wheel hub trim (2.2g)) 431 3-spoke multi-function steering wheel in smooth leather oo (smooth leather finish in interior color: steering wheel rim (with cross-stitched seam, 2.2a) and airbag module (2.2b)) XSC* Porsche crest on head restraints oo XMZ* Rear section of center console in leather oo (leather finish in interior color: rear of center console incl. ashtray lid (4.4a), handbrake lever handhold trim (4.4b)) XMR* Leather sun visors oo (leather finish in interior color (left/right) incl. cover of vanity mirror. Passenger’s sun visor includes reading light with switch) XX1* Leather floor mat trim oo Wood 801 “Macassar” interior package, dark (matt satin finish) oo (trimmed with macassar: decorative dashboard trim incl. cup holder trim, five-part (2.3), shift/selector lever (4.1a), handbrake lever handle (4.3a)) 802 “Sycamore” interior package, light (matt satin finish) oo (trimmed with sycamore: decorative dashboard trim incl. cup holder trim, five-part (2.3), shift/selector lever (4.1a), handbrake lever handle (4.3a)) 451 3-spoke “Macassar“ multi-function steering wheel, dark (matt satin finish) oo (steering wheel rim (2.2a) with smooth leather finish with wood inserts, airbag module (2.2b) with smooth leather finish)

113 O = Standard o = Optional Boxster Boxster S

I-No. Description Wood 452 3-spoke “Sycamore” multi-function steering wheel, light (matt satin finish) oo (steering wheel rim (2.2a) with smooth leather finish with wood inserts, airbag module (2.2b) with smooth leather finish) E37* Additional interior package with “Macassar” dashboard, dark (matt satin finish) oo (trimmed with macassar: inserts in defroster trim (2.4a). Smooth leather finish in interior color: side vent vanes (2.5b), center vent vanes (2.6b), dashboard loudspeaker cover (center, 2.8b), defroster trim (2.4a, partially)) E38* Additional interior package with “Sycamore” dashboard, light (matt satin finish) oo (trimmed with sycamore: inserts in defroster trim (2.4a). Smooth leather finish in interior color: side vent vanes (2.5b), center vent vanes (2.6b), dashboard loudspeaker cover (center, 2.8b), defroster trim (2.4a, partially)) XTT* Additional interior package with “Macassar” door-trim panels, dark (matt satin finish) oo (trimmed with macassar: door storage bin lid (3.3c), door storage bin lid extension (3.3c), door handle trim (3.2c)) XTU* Additional interior package with “Sycamore” door-trim panels, light (matt satin finish) oo (trimmed with sycamore: door storage bin lid (3.3c), door storage bin lid extension (3.3c), door handle trim (3.2c)) XJT* Rear of center console in “Macassar”, dark (matt satin finish) oo (trimmed with macassar: rear of center console incl. ashtray lid (4.4a). Smooth leather finish in interior color: handbrake lever handhold trim (4.4b)) XJU* Rear of center console in “Sycamore”, light (matt satin finish) oo (trimmed with sycamore: rear of center console incl. ashtray lid (4.4a). Smooth leather finish in interior color: handbrake lever handhold trim (4.4b)) Carbon 803 Carbon interior package oo (carbon finish: decorative dashboard trim incl. cup holder trim, five-part (2.3), shift/selector lever (4.1a), handbrake lever handle (4.3a)) 453 3-spoke carbon multi-function steering wheel oo (steering wheel rim (2.2a) with smooth leather finish with wood inserts, airbag module (2.2b) with smooth leather finish) E39* Additional interior package with carbon dashboard oo (carbon finish: inserts in defroster trim (2.4a). Smooth leather finish in interior color: side vent vanes (2.5b), center vent vanes (2.6b), dashboard loudspeaker cover (center, 2.8b), defroster trim (2.4a, partially)) XTL* Additional interior package with carbon door-trim panel oo (carbon finish: door storage bin lid (3.3c), door storage bin lid extension (3.3c), door handle trim (3.2c)) XMJ* Rear section of center console in carbon oo (carbon finish: rear of center console incl. ashtray lid (4.4a). Smooth leather finish in interior color: handbrake lever handhold trim (4.4b)) X69* Carbon door entry guards oo Aluminium-look finish / stainless steel E40* Interior package with aluminium-look dashboard oo (aluminium-look: instrument cluster frame (2.0d). Leather finish in interior color: side vent vanes (2.5b), center vent vanes (2.6b), dashboard loudspeaker cover (center, 2.8b), defroster trim (2.4a)) XTW* Interior package with aluminium-look door-trim panels oo (aluminium-look: door storage bin lid (3.3c), door storage bin lid extension (3.3c), door handle trim (3.2c))

114 O = Standard o = Optional W = Available at no extra cost Boxster Boxster S

I-No. Description Aluminium-look finish / stainless steel XPV* Aluminium-look 3-spoke multi-function steering wheel oo (steering wheel rim (2.2a) with smooth leather finish with wood inserts, airbag module (2.2b) and steering wheel hub trim (2.2g) with smooth leather finish) XCL* Aluminium-look instrument cluster frame oo (aluminium-look: instrument cluster frame (2.0d)) XCK* Aluminium-look rear section of center console oo (aluminium-look: rear of center console incl. ashtray lid (4.4a). Smooth leather finish in interior color: handbrake lever handhold trim (4.4b)) X70* Door entry guards in stainless steel oo XCM* Aluminium-look roll-over bar oo Audio and communication P16 Porsche Communication Management (PCM) oo (incl. GPS navigation module with separate DVD drive in front luggage compartment) 666 Telephone module for PCM (USA from 12/04) oo 668 Telephone handset for telephone module oo 618 Telephone preparation for mobile phone oo (only with CDR-24 radio. For USA also in combination with PCM) 490 Sound Package Plus o O (with 7 loudspeakers and CD storage tray in glove compartment) 680 BOSE® Surround Sound system oo (digital surround sound system with 11 loudspeakers, 325 W total output and CD storage tray in glove compartment) P73 BOSE® Surround Sound system with wind deflector subwoofer on engine cover (replaces storage box) oo 692 CDC-4 CD autochanger (six-disc) oo 675 Preparation for Japanese navigation oo 461 Rod antenna WW 900 Factory collection oo

* Available no earlier than 01/05 ** Available no earlier than 02/05 *** Available no earlier than MY 06

Table 11: Individual equipment

115 Figure 144: Interior components

116 13 Colors 13.2 Convertible top colors

13.1 Exterior colors The 3-layer material of the convertible top is available in four colors: Solid colors (standard equipment) Black, Stone Grey, Metropole Blue and Black Cocoa. Guards Red Carrara White Speed Yellow

13.3 Interior colors Figure 145: Convertible top: Black Metallic colors (optional) Basalt Black Metallic For leatherette/leather/Alcantara/ Atlas Grey Metallic soft-touch paint/carpet. Seal Grey Metallic Headliner, sun visors and protective Arctic Silver Metallic strip all in Black. Lapis Blue Metallic Midnight Blue Metallic Standard colors Lagoon Green Metallic Black Carmon Red Metallic Stone Grey

Sand Beige Figure 146: Convertible top: Stone Grey Special colors (optional) Palm Green Slate Grey Metallic* Ocean blue GT Silver Metallic* Cobalt Blue Metallic* Special colors Forest Green Metallic* (optional; only in combination Dark Olive Metallic* with leather interior) Terracotta* Cocoa*

Two-tone Figure 147: Convertible top: Metropole Blue (optional; only in combination with leather interior) Black – Stone Grey*

Natural leather (optional; only in combination with leather interior) Natural Dark Grey* Natural Brown*

Figure 148: Convertible top: Cocoa * Available no earlier than 01/05

117 14 Maintenance costs 14.1 Maintenance Further examples of reduced main- (cost of ownership) tenance costs: the alternator, steering The service intervals (oil change servo pump and air conditioning in vehi- From the very outset of development of intervals) for the Boxster have been cles with the new engines are driven by the new Boxster, particular attention was increased from 20,000 km / a single, self-adjusting belt that only paid to keeping the maintenance 12,000 miles for the previous model to has to be changed every 90,000 km / costs low and reducing them further 30,000 km / 20,000 miles. This means 60,000 miles (previously 80,000 km / in comparison with the previous fewer visits to the workshop for the 48,000 miles). The use of individual model. customer and a significant reduction in ignition coils means that the only part The “cost of ownership” (without de- regular maintenance costs. Mainte- of the ignition system that requires main- preciation), that is, the maintenance, fuel nance must be carried out at least every tenance is the spark plugs – and these and – if applicable depending on the 2 years whether or not the mileage only have to be changed every country-specific regulations – insurance thresholds for regular maintenance are 90,000 km / 60,000 miles (previously costs and the tax have been reduced. reached. Unlike vehicles that are fitted 80,000 km / 48,000 miles) or every In Germany, these measures have per- with a maintenance interval computer, 4 years. The timing chains for the mitted a reduction in the cost of owner- both the Boxster and the Boxster S camshaft and intermediate shaft are to- ship of approx. 13 % for the Boxster must be brought to the Porsche work- tally maintenance-free. and approx. 19 % for the Boxster S shop after 30,000 km / 20,000 miles (over 4 years at a mileage of for their first regular service regardless 15,000 km / 9,400 miles per annum). of how the car has been driven.

986 986 S 987 987 S Average regular maintenance costs € 261 € 261 € 192 € 192

Maintenance interval (km) 20,000 20,000 30,000 30,000

Hourly workshop rate (D) € 80 € 80 € 80 € 80

Time required for minor maintenance 1.7 1.7 1.7 1.7

Time required for major maintenance 3.2 3.2 3.2 3.2

Average material costs for regular € 128 € 128 € 94 € 94 maintenance per annum

Average labour costs for regular € 133 € 133 € 99 € 99 maintenance per annum

Average additional maintenance € 72 € 72 € 71 € 71 costs per annum Average maintenance costs per annum € 334 € 334 € 264 € 264

Average tax per annum € 182 € 216 € 182 € 216

Emission classification EU 3 / D 4 EU 3 / D 4 EU 4 EU 4 Average fuel costs per annum € 1,417 € 1,534 € 1,403 € 1,520

DIN consumption (litre/100 km) 9.7 10.5 9.6 10.4

Range (km) 660 610 667 615 Average insurance costs per annum € 2,140 € 2,678 € 1,701 € 1,861

Insurance 14/28/27 15/29/27 12/26/25 12/27/25 (third party/fully comprehensive/part cover)

Average total costs per annum € 4,074 € 4,762 € 3,549 € 3,860

∆-total costs compared to 987 or 987 S € 525 € 902 € 0 € 0

Table 12: Overview of cost of ownership (taking Germany as an example)

118 The new ATF light-running oil also 14.2 Repair/insurance In countries such as Germany where the enables the oil change intervals classification (comprehensive) insurance classifica- to be extended from 160,000 km / tions depend, among other things, on 100,000 miles to 180,000 km / A range of individual measures have the anticipated amount of a potential 120,000 miles in vehicles with been introduced for the new Boxster to claim, the measures undertaken are ex- Tiptronic S or manual gearbox. reduce its sensitivity to minor dam- pected to result in a more favourable age and hence repair costs. comprehensive classification (aim). In accordance with current system of The most extensive optimisation meas- calculation for the comprehensive classi- ures have been carried out at the front fication (as of 1.10.2003), the fully com- of the vehicle. For example, new im- prehensive type class (using the exam- pact elements in the front bumper pro- ple of Germany) will be downgraded tect the body from extensive and costly from 28 to 26 for the Boxster and from damage in minor impacts. The front 29 to 27 for the Boxster S. This trans- end can be quickly and easily re- lates to a reduction in insurance costs placed thanks to its simple fixtures of approx. 21 % for the Boxster and (clips). The new headlight design is approx. 30 % for the Boxster S. (The also less sensitive to damage than definitive classification by the German before. Insurance Association, GDV (Gesamt- The new line layouts for the radiator in verband der Deutschen Versicherungs- the front end and the reworking of the gesellschaft e.V.) is expected mid-June radiator connections have reduced the 2004.) sensitivity of the new Boxster models to damage and hence reduced repair costs. The use of cost-effective brackets with desired break points prevents the radiator module being damaged in a slight collision, for example. When it comes to repair, the damaged plastic carriers can be replaced and the radiator module re-mounted. Further- more the use of quick couplings throughout the cooling system pipework has reduced the amount of repair work required in the event of damage, again resulting in lower repair costs.

119 15 Technical specifications

Unit Boxster (987) Boxster S (987 S) Boxster (986) Boxster (986 S) MY 05 MY 04 Engine Number of cylinders 6 6

Valves/cylinder 4 4

Displacement (effective) cm3/ 2,687/164 3,179/194 2,687/164 3,179/194

cu in

Bore x stroke mm/in 85,5 x 78 93 x 78 85,5 x 78 93 x 78

3.37 x 3.07 3.66 x 3.07 3.37 x 3.07 3.66 x 3.07

Output kW/ 176/ 206/ 168/ 191/ HP 240 280 228 260

at rpm min–1 6,400 6,200 6,300 6,200

Max. torque Nm/lbft 270/199 320/236 260/192 310/229

at rpm min–1 4,700–6,000 4,700–6,000 4,700 4,600

Compression ratio 11.0:1

Volumetric efficiency kW/l 65.5 64.8 62.5 60.1 HP/l 89.3 88.1 84.9 81.8

Engine management/ Digital engine electronics ME 7.8-40 Digital engine electronics ME 7.8 mixture preparation (increased computer capacity and more memory)

Fuel type Super plus unleaded, RON 98 Super plus unleaded, RON 98 (RON 95 can be used but will reduce performance)

Generator W 2,100 W 1,680 W

Starter (Tiptronic S) kW 1.2 (1.7) 1.7 1.2 (1.7) 1.7

Battery capacity Ah 60 70 60 70

Idle speed rpm 680 ±40 680 ±40

Maximum engine speed rpm 7,200 7,200 Transmission Manual gearbox

Transmission ratio 1st gear 3.50 3.67 3.50 3.82

2nd gear 2.12 2.05 2.12 2.20

3rd gear 1.43 1.41 1.43 1.52

4th gear 1.09 1.13 1.09 1.22

5th gear 0.84 0.97 0.84 1.02

6th gear – 0.82 – 0.84

Reverse 3.44 3.33 3.44 3.55

Final drive ratio 3.75 3.88 3.56 3.44

Clutch diameter mm/in 240/9.45 240/9.45

120 Unit Boxster (987) Boxster S (987 S) Boxster (986) Boxster (986 S) MY 05 MY 04 Transmission Tiptronic S

Transmission ratio 1st gear 3.66 3.67

2nd gear 2.00 2.00

3rd gear 1.41 1.41

4th gear 1.00 1.00

5th gear 0.74 0.74

Reverse 4.1 4.1

Final drive ratio x 4.38 3.91 4.02 3.73 intermediate ratio Chassis Front axle Spring strut Spring strut (McPherson design, Porsche-optimised); (McPherson design, Porsche-optimised); tube-type stabilisers stabilisers

Toe-in min +5 ±5 +5 ±5

Camber RoW min –10 ±15 –10 ±30

Coasting RoW degrees +8° ±30’ +8° ±30’

Rear axle Spring strut Spring strut (McPherson design, Porsche-optimised); (McPherson design, Porsche-optimised); tube-type stabilisers stabilisers

Toe-in per wheel min +5 ±5 + 5 ± 5

Camber degrees –1° 20’ –1° 20’ ±30’ Steering

Steering ratio 17.11:1 (center position) 16.9:1 to 13,76:1 (variable)

Steering wheel revolutions 2.62 2.98 from lock to lock

Steering wheel diameter mm/in 375/14.8 (3-spoke steering wheel) 375/14.8 (3-spoke steering wheel) Brake

Brake calipers 4-piston aluminium monobloc 4-piston aluminium monobloc fixed-caliper brake fixed-caliper brake

ABS Bosch ABS 8.0 Bosch ABS 5.7

Brake discs (FA and RA) Internally ventilated Internally ventilated Internally ventilated Internally ventilated and perforated and perforated and perforated

Diameter x thickness FA mm/in 298 x 24/ 318 x 28/ 298 x 24/ 318 x 28/

11.73 x 0.94 12.52 x 1.1 11.73 x 0.94 12.52 x 1.1

RA mm/in 299 x 20/ 299 x 24/ 292 x 20/ 299 x 24/

11.77 x 0.79 11.77 x 0.94 11.50 x 0.79 11.77 x 0.94

121 Unit Boxster (987) Boxster S (987 S) Boxster (986) Boxster (986 S) MY 05 MY 04 Wheels/tires Standard: Wheels front 6,5J x 17 RO 55 8J x 18 RO 57 6J x 16 RO 50 7J x 17 RO 55

rear 8J x 17 RO 40 9J x 18 RO 43 7J x 16 RO 40 8,5J x 17 RO 48

Tires front 205/55 ZR 17 235/40 ZR 18 205/55 ZR 16 205/50 ZR 17

rear 235/50 ZR 17 265/40 ZR 18 225/50 ZR 16 255/40 ZR 17

Optional: Wheels front 8J x 18 RO 57 7J x 17 RO 55

rear 9J x 18 RO 43 8,5J x 17 RO 48

Tires front 235/40 ZR 18 205/50 ZR 17

rear 265/40 ZR 18 255/40 ZR 17

Optional: Wheels front 8J x 19 RO 57 8J x 18 RO 50

rear 9,5J x 19 RO 46 10J x 18 RO 47

Tires front 235/35 ZR 19 225/40 ZR 18

rear 265/35 ZR 19 265/35 ZR 18

Winter wheels (17″): Wheels front 6,5J x 17 RO 55 7J x 17 RO 55

rear 8J x 17 RO 40 8,5J x 17 RO 48

Tires front 205/55 R 17 205/50 R 17

rear 235/50 R 17 225/45 R 17

Winter wheels (18″): Wheels front 8J x 18 RO 57 7,5J x 18 RO 50

rear 9J x 18 RO 43 9J x 18 RO 52

Tires front 235/40 R 18 225/40 R18

rear 255/40 R 18 265/35 R18

Air pressure (16″), 17″,18″ front bar/psi 2.0/29.01 2.0/29.01

rear bar/psi 2.5/36.26 2.5/36.26

Air pressure 19″ front bar/psi 2.2/31.91 2.2/31.91

rear bar/psi 2.5/36.26 2.5/36.26 Weights (dependent on equipment) Unladen weight Manual gearbox kg/lbs 1,295/2,855 1,345/2,965 1,275/2,811 1,320/2,910 (DIN) Tiptronic S kg/lbs 1,355/2,987 1,385/3,053 1,330/2,932 1,360/2,998

Unladen weight Manual gearbox kg/lbs 1,370/3,020 1,420/3,131 1,350/2,971 1,395/3,075 EU (DIN + Tiptronic S kg/lbs 1,430/3,153 1,460/3,219 1,405/3,097 1,435/3,164 75 kg driver)

Weight distri- Manual gearbox % 47/53 45/55 46/54 45/55 bution front/rear Tiptronic S % 45/55 44/56 44/56 44/56

Maximum Manual gearbox kg/lbs 1,610/3,549 1,630/3,594 1,600/3,527 1,630/3,594 gross weight Tiptronic S kg/lbs 1,655/3,649 1,670/3,682 1,655/3,649 1,670/3,682

Permissible axle load front kg/lbs 775/1,709 775/1,709 775/1,709 775/1,709

Permissible axle load rear kg/lbs 915/2,017 940/2,072 915/2,017 940/2,072

Max. payload Manual gearbox kg/lbs 315/694 285/628 325/716 310/683

Tiptronic S kg/lbs 300/661 285/628 325/716 310/683

122 Unit Boxster (987) Boxster S (987 S) Boxster (986) Boxster (986 S) MY 05 MY 04 Performance Top speed Manual gearbox km/h / 256 / 159 – 253 / 157 – (5-speed) mph

Manual gearbox km/h / 258 / 160 268 / 167 – 264 / 164 (6-speed) mph

Tiptronic S km/h / 250 / 155 260 / 162 248 / 154 258 / 160 (6-speed) mph

Acceleration Manual gearbox s 6.2 – 6.4 – 0–100 km/h / (5-speed)

0–62 mph Manual gearbox s 6.2 5.5 – 5.7 (6-speed)

Tiptronic S s 7.1 6.3 7.3 6.4

Acceleration Manual gearbox s 14.5 12.3 15.0 13.2 0–160 km/h / 0–100 mph Tiptronic S s 16.4 13.9 17.2 14.9 Acceleration Manual gearbox s 26.2 24.9 26.5 25.3 0–1000 m Tiptronic S s 27.2 25.9 27.6 26.3

Acceleration Manual gearbox s 14.5 13.8 – – 1/ mile 4 Tiptronic S s 15.1 14.3 – –

Flexibility Manual gearbox s 6.9 6.8 6.9 7.4 (80–120 km/h / 50–75 mph) In penultimate Tiptronic S s 7.7 7.2 – – gear

Fuel economy (= Tiptronic S) Typ. manufacturer’s Urban l/ 13.9 (15.2) 15.2 (16.3) 14.2 (15.3) 15.3 (16.4) specs. as per 100 km 80/1268/EEC Extra- l/ 6.9 (7.8) 7.7 (7.9) 7.1 (7.9) 7.8 (8.0) urban 100 km

Total l/ 9.6 (10.5) 10.4 (11.0) 9.7 (10.7) 10.5 (11.1) 100 km

CO2-emissions g/km 229 (250) 248 (262) 233 (259) 255 (268) US consumption combined mpg not yet available not yet available 27.0 24.8 Exterior dimensions Length RdW mm/in 4,329/170.6 4,320/170.2

USA mm/in 4,359/171.6 4,340/171.0

Width mm/in 1,801/70.9 1,780/70.1

with door mirrors mm/in 1,937/76.3 –

Height with standard mm/in 1,295/51.0 1,290/50.8 chassis

Height with PASM mm/in 1,285/50.6 –

Wheelbase mm/in 2,415/95.1 2,415/95.1

123 Unit Boxster (987) Boxster S (987 S) Boxster (986) Boxster (986 S) MY 05 MY 04 Exterior dimensions Track, front 16″ mm/in – – 1,465/57.7 – (DIN unladen) 17″ mm/in 1,490/58.7 – 1,455/57.3 1,455/57.3

18″ mm/in 1,486/58.5 1,486/58.5 1,465/57.7 1,465/57.7

19″ mm/in 1,486/58.5 1,486/58.5 – –

Track, rear 16″ mm/in – – 1,528/60.2 – (DIN unladen) 17″ mm/in 1,534/60.4 – 1,514/59.7 1,514/59.7

18″ mm/in 1,528/60.2 1,528/60.2 1,504/59.3 1,504/59.3

19″ mm/in 1,522/59.9 1,522/59.9 – –

Drag coefficient cd 0.29 0.30 0.31 0.32 Frontal area A m2/ 1.96/2.34 1.97/2.36 1.94/2.32 sq yrds

2 Drag cd x A m / 0.57/0.68 0.59/0.71 0.60/0.72 0.62/0.74 yrds

Turning circle m/ft 11.1/36.4 10.9/35.8

Front approach Basic degrees 12.0 12.0 angle PASM/ degrees 11.5/ – – /11.5 (DIN unladen) sports chassis

Rear departure Basic degrees 16.0 15.5 angle PASM/ degrees 15.5/ – – /15.0 (DIN unladen) sports chassis

Ramp angle Basic degrees 13.0 12.5 (DIN unladen) PASM/ degrees 12.5/ – – /12.0 sports chassis

Ground clearance Basic mm/in 121/4.8 100/3.9 (DIN unladen, PASM/ mm/in 111/4.4 90/3.5 center of axles) sports chassis Interior dimensions Interior length1) Driver’s side mm/in 1,090/42.9 1,072/42.2

Passenger side mm/in 968/38.1 961/37.9

Shoulder room mm/in 1,308/51.5 1,308/51.5

Elbow room mm/in 1,355/53.4 1,356/53.4

Effective headroom2) mm/in 972/38.3 972/38.3

Luggage compart- front l/cu ft 150/5.3 130/4.6 ment volume rear l/cu ft 130/4.6 130/4.6

Tank capacity (incl. reserve) l/US gal 64 (10)/16.9 (2.6) 64 (10)/16.9 (2.6)

Table 13: Technical specifications 1) Driver’s side: from pressed clutch pedal to rear lower hip point (DS). Passenger side: from heel point in front of firewall to rear lower hip point 2) Distance from R point to roof lining; standardised dimension. The actual headroom cannot be specified as a single value due to the convex shape of the roof. It depends on the seat setting (fore/aft setting, backrest angle).

124 16 Comparison

Competition in the premium roadster segment is becoming increasingly intense. The Boxster’s main competition in this segment are the BMW Z4 3.0i, Mercedes-Benz SLK 350, Nissan 350Z Roadster and Audi TT Roadster 3.2 quattro. Also in this segment, but less of a Figure 149: Audi TT Roadster 3.2 quattro Figure 150: BMW Z4 3.0i threat (and therefore called “secondary competitors”), are the Honda S2000 and 16.1 An overview of main and The BMW Z4, the most serious competi- the Chrysler Crossfire Roadster (SRT-6). secondary competitors tion for the Porsche Boxster, was re- newed in Autumn 2002 (USA), making it The following competitor comparisons, Audi launched its top-of-the-line TT Road- the first of the three German premium comprising data and information, side- ster 3.2 quattro with 6-cylinder engine roadsters to go undergo this evolution. by-side comparisons and an overview of and output of 250 HP in 2003. Initially Produced in the USA like the previous Z3 product advantages/customer benefits this model was only available with the model, it was not introduced in Europe (the latter two comparisons only for the DSG direct transmission, however a until six months later. The design of the main competitors), provide an essential model with a 6-speed manual gearbox BMW Roadster proved contentious initial- basis for argumentation in the sales dis- was added later. The TT cannot com- ly, however it represented a major step cussion. pete with the Boxster when it comes to forward for BMW in terms of product performance potential because of its features and driving dynamics. As is higher weight and pronounced nose- commonplace at BMW, the 2.5i and the heaviness (front/rear weight distribution: 3.0i were followed by the 2.2i (IAA 2003 60 % / 40 %). This fact is verified not was chosen for the launch of this entry- only by the standard measured values, level model). However 4-cylinder variants but also the lap times turned in by the such as used in the Z3 are set to be- Audi. Really the only way in which the come a thing of the past, which is a fur- TT Roadster 3.2 quattro can compete ther indication of BMW’s intention to po- with the Porsche is with its price of sition the Z4 at a higher level. The ques- € 42,300 (Germany incl. 16 % VAT). tion of whether there will be an M Road- ster successor to the Z4 remains to be answered.

125 Figure 151: Mercedes-Benz SLK 350 Figure 152: Nissan 350Z Roadster Figure 153: Honda S2000

The new Mercedes-Benz SLK (R 171) is Nissan launched the open offspring of The Honda S2000 (€ 36,150, Germany another serious competitor in the premi- the 350Z Coupé, the 350Z Roadster, in incl. 16 % VAT) underwent a facelift in um roadster segment. Over 300,000 of Spring 2003 (USA). The 350Z Coupé Spring 2004 with a revised chassis and its predecessor, the R 170, were pro- was extremely successful – particularly discreet cosmetic improvements. In duced over a period of 8 years. With a in the USA – with sales of approx. terms of performance it is a direct rival new aesthetic design in the style of the 50,000 units in the financial year 2003 to the Boxster with its powerful 2.0 litre SLR and decidedly sporty attributes, the making it an instant best-seller in the 4-cylinder engine (the most powerful 4- aim at Mercedes-Benz is to position the sports coupé segment. Almost 5,000 of cylinder in the world with 9,000 rpm) SLK as a fully fledged member of the the roadster variant were licensed in the and 240 HP (torque: 208 Nm/153 lbs), Mercedes-Benz sports car family. The USA in the first half of the financial year however in terms of sales it is only of more comprehensive offering in compari- 2004, however it is not expected in Eu- relevance in the USA (and to a lesser ex- son with the R 170 has been extended rope until the end of 2004/beginning of tent in Japan and Great Britain) (cf. quar- by the SLK 350, which competes with 2005. The 350Z Roadster is inspired by terly report III/03). The successor to the the Boxster S in terms of performance the long tradition of the Z car at Nissan. S2000 is expected towards the end of (3.5 litre V6 engine and 272 HP), but is With its 3.5 litre V6 engine and 280 HP 2006. priced more in line with the Boxster output, the price tag for the 350Z Road- (€ 43,384 incl. 16% VAT, Germany). By ster in the USA will start from including innovations such as Airscarf US$ 34,050 (UVP). While it may be more and the 7-speed 7G-Tronic automatic favourably priced than the Boxster, it is gearbox, Mercedes-Benz is working hard also approx. 260 kg/573 lbs heavier, to substantiate its claim of being a tech- which means a less favourable power-to- nological leader. weight ratio.

126 Figure 154: Chrysler Crossfire Roadster SRT-6

The Chrysler Crossfire Roadster, pre- sented at the Detroit Motor Show 2004, represents a new, striking roadster based on the technology of the “old” SLK (R 170). DaimlerChrysler’s intention with the Crossfire Roadster is to deliver an innovative vehicle concept through the marriage of progressive American design and German Mercedes-Benz technology. In terms of driving dynamics, however, the only real competition for the Boxster is from the SRT-6 version (“SRT” stands for “Street and Racing Technology”). The top of the Crossfire conceals the 3.2 litre V6 AMG compressor engine (330 HP) from the old SLK 32 AMG, combined with a more powerful brake system. The Crossfire SRT-6 Roadster, which up until now has only been available in the USA at a MSRP price of US$ 49,120, will remain a rare sight in Europe; after all, only 1,640 units of the basic coupé were sold in Europe in the first half of MY04.

127 2000 uper plus, RON 98 4-cylinder in-line engine, 16 valves, two overhead camshafts, variable valve (VTEC), control Aluminium cylinder head and engine block 55 [limited] 240 / 149 6-cylinder V-engine with supercharging, 18 valves, one overhead camshaft per cylinder bank, aluminium cylinder head and engine block 6-cylinder V-engine, 24 valves, two overhead camshafts per cylinder bank, variable for inlet timing control valves (NCVCS), aluminium cylinder head and engine block Enthusiast) 6-cylinder V-engine, 24 valves, two overhead camshafts per cylinder bank, intake and exhaust camshaft adjustment, switchable intake module, tumble flaps, aluminium cylinder head and engine block 6-cylinder in-line engine, 24 valves, two overhead camshafts, intake and exhaust camshaft adjustment (double VA- NOS), switchable intake module; aluminium cylinder head and engine block 6-cylinder V-engine, 24 valves, two overhead camshafts, intake and exhaust camshaft adjustment, switchable intake module, aluminium cylinder head and engine cast-iron grey block 6-cylinder horizontally opposed engine, 24 valves, two overhead camshafts per cylinder bank, intake camshaft adjustment (VarioCam), intake sy- resonance stem, aluminium cylinder head and engine block 6-cylinder horizontally opposed engine, 24 valves, two overhead camshafts per cylinder bank, intake camshaft adjustment (VarioCam), intake sy- resonance stem, aluminium cylinder head and engine block RoadsterMid/rear2/2 Roadster Mid/rear 2/2 Roadster Front/all-wheel Front/rear Roadster 2/2 Front/rear Roadster 2/2 Front/rear Roadster 2/2 Front/rear Roadster Front/rear Roadster 2/2 2/2 2/2 65.5 / 89.3 64.8 / 88.1 57.7 / 78.6 57.1 / 77.8 57.2 / 77.9 58.9 / 80.2 76.9 / 104.7 104.1 / 141.8 6/2,687 / 164176/240 @ 6,400 6/3,179 / 194 206/280 @ 6,200270 / 199 6/3,189 / 195@ 4,700-6,000 184/250 @ 6,30011.0 : 1 170/231 @ 5,900 6/2,979 / 182 @ 4,700-6,000Super plus, RON 98 320 / 236 200/272 @ 6,000 Super plus, RON 98 6/3,498 / 213 @ 2,800 - 3,2007.4 / 11.9 Super plus, RON 98 206/280 @ 6,200 11.0 : 1 320 / 236 Super plus, RON 98Integrated dry sump 246/330 @ 6,100 @ 3,500 6/3,498 / 213EU4 Integrated dry sump Super plus, RON 98 6.5 / 10.6 177/240@ 8,300 229 (250) Forced-feed Super plus, RON 98 11.3 : 1 6/3,200 / 195 300 / 221 Super plus, RON 989.6 (10.5) @ 2,400-5,000 S 8.5 / 13.8 4/1,997 / 122 Forced-feed EU4 248 (262) 350 / 2586.2 (7.1) @ 4,800 10.2 : 1 10.4 (11.0) 7.6 / 12.3256 (250) / 159 (155) Forced-feed 268 (260) / 167 (162) 238 363 / 268 250 / 155 [limited] 5.5 (6.3) @ 3,500-4,800 10.7 (10.0) EU4 10.7 : 1 250 (244) / 155 (152) Forced-feed 250 / 155 [limited] 6.9 / 11.3 @ 7,500 420 / 310 250 / 155 [limited] 9.1 (9.5) 6.7 (6.6) 221 (231) 10.3 : 1 250 / 1 Forced-feed 7.6 / 12.0 EU4 208 / 153 10.6 (10.1) 255 (238) 5.9 (6.2) No details 9.0 : 1 6.1 / 10.1 EU4 11.1 273 5.6 (5.5) 5.9 / 11.4 11.0 : 1 EU3/ D4 No details 5.9 (no details) No details AG: 5.2 10.0 EU4 237 6.2 EU 3 ) 1 emissions / cu in 3 2 Emission classification in g/km (values in brackets for 3.2 quattro SLK 350 Roadster (US Variant Roadster SRT-6 Criterionoptional AG) Concept Segment Boxster (2.7) Porsche Engine position/drive Porsche Boxster S Seats/doors Audi TT RoadsterEngine Type/valves BMW Z4 3.0i Mercedes-Benz Nissan 350Z Chrysler Crossfire Honda S Cylinders/ displacement cm Engine power output in kw/HP at stated revs Max. torque in Nm/lbft at stated revs ratio Compression Fuel type efficiency Volumetric (kW/l / HP/l) ratio Power-to-weight (kg/kW / lbs HP) Engine lubrication CO Fuel consumption (average) in with accordance 80/1268/EEC Acceleration 0–100 km/h / 62 mph [s] Maximum speed in km/h / mph ) US-consumption and emission classification values were not available until copy deadline ) US-consumption and emission classification values were 1 16.2 Tabular comparison 16.2 Tabular

128 2000 6-speed Not available Double wishbone independent wheel suspension with double arms triangular control Double wishbone independent wheel suspension with double arms triangular control Rack-and-pinion steering (electric) Locking differential Not available 5-speed automatic with Auto-Stick Double triangular arms control Independent wheel suspension with five- link axle Recirculating ball Recirculating steering Electronic stability Electronic (ESP), traction program control 6-speed Optional: 5-speed automatic transmission Double wishbone front axle made of forged aluminium, suspension strut and stabiliser Multi-link rear axle Multi-link rear Servo assistance rack- and-pinion steering Enthusiast) Part-locking viscous multi-plate clutch, Dynamic Vehicle (VDC), Traction Control System (TCS), Control stability electronic (ESP) program 6-speed Optional: 7-speed automatic transmission (7-G-Tronic) Strut suspension with arm, triple control wheels suspended individually on wishbones and suspension struts (McPherson type) with support brake torque Multi-link suspension with moving-off and support brake torque Hydraulic rack-and- pinion power steering Electronic stability Electronic (ESP) program 6-speed Optional: 5-speed automatic and with Steptronic 6-speed sequential manual transmission (SMG) Double-jointed suspension-strut front axle Central control-arm axle rear Electric steering (speed-dependent servo assistance) Dynamic Stability (DSC) with Control on-demand traction mode 6-speed Optional: trans- 6-speed direct mission (DSG) McPherson strut suspension with lower arms, triangular control subframe Longitudinal double transverse axle (LDQ axle), subframe Servo assistance rack- maintenance-free and-pinion steering Electronic stability pro- Electronic gram (ESP) with ABS, ASR and electronic lock EDS differential 6-speed Optional: S 5-speed Tiptronic Strut suspension, wheels suspended individually on wishbones with trailing links and suspension struts (McPherson type, Porsche-optimised) Strut suspension, wheels suspended individually on wishbones with trailing links and suspension struts (McPherson type, Porsche-optimised) Servo assistance rack- and-pinion steering with variable steering ratio PSM (Porsche Stability Management) with ABS, ASR, ABD and MSR 5-speed (optional: 6-speed) Optional: S 5-speed Tiptronic Strut suspension, wheels suspended individually on wishbones with trailing links and suspension struts (McPherson type, Porsche-optimised) Strut suspension, wheels suspended individually on wishbones with trailing links and suspension struts (McPherson type, Porsche-optimised) Servo assistance rack- and-pinion steering with variable steering ratio PSM (Porsche Stability Management) with ABS, ASR, ABD and MSR 11.1/36.4 11.1/36.4 10.6/34.8 9.8/32.2 10.5/34.4 11.2/36.7 9.8/32.2 11.3/37.1 Manual gearbox Automatic transmission Front axle Front Rear axle Steering Turning circle (in m/ft) circle Turning Driving dynamics control/ system for improving traction (values in brackets for 3.2 quattro SLK 350 Roadster (US Variant Roadster SRT-6 Criterionoptional AG) Transmission Boxster (2.7) Porsche Porsche Boxster S Audi TT Roadster BMW Z4 3.0iChassis Mercedes-Benz Nissan 350Z Chrysler Crossfire Honda S

129 / 2000 Internally ventilated at front No details 4,135 x 1,750 1,270 143/5.0 215/45 R 17 / 245/40 R 17 / x 51.8 162.9 x 69.0 50.0 9 J x 19 7J x 17 / 8.5J LM = 0.384 No details d Internally ventilated 2-piston fixed calipers and rear at front 104/3.8 (convertible top open) / 190/6.7 (convertible top closed) 4,059 x 1,502 1,315 225/40 ZR 18 / 255/35 ZR 19 / = 0.29 c d Internally ventilated 4-piston fixed calipers 235/8.3 Enthusiast) 225/45 R 18 / 245/45 R 18 4,310 x 1,815 1,315 / and branches; accuracy cannot be guaranteed. Internally ventilated at front 4-piston fixed calipers and 2-piston at front fixed calipers at rear 208/7.3 (convertible top open) / 300/10.6 (convertible top closed) 225/45 R 17 / 245/40 R 17 4,092 x 1,788 1,298 specification models). / Internally ventilated No details 240/8.5 (convertible top open) / 260/9.2 (convertible top closed) 225/45 R 17 4,091 x 1,781 1,299 / Internally ventilated Twin-piston high- Twin-piston performance brake 180/6.5 225/45 R 17 4,041 x 1,764 1,348 / Internally ventilated and perforated 4-piston aluminium monobloc fixed cali- and rear pers at front Front: approx. 150/5.3 approx. Front: 130/4.6 Rear: approx. 235/40 ZR 18 / 265/40 ZR 18 4,329 x 1,801 1,295 / Internally ventilated and perforated 4-piston aluminium monobloc fixed cali- and rear pers at front Front: approx. 150/5.3 approx. Front: 130/4.6 Rear: approx. 205/55 ZR 17 / 235/50 ZR 17 298 x 24/11.73 x 0.94299 x 20/11.7 x 0.79 318 x 28/ 12.53 x 1.1 299 x 24/6.5 J x 17 / 8 11.77 x 0.94 13.16 x 1.26 334 x 32/ 8 J x 18 / 9 10.09 x 0.87 256 x 22/ 7.5J x 17 RO 32 11.82 x 0.872,415/95.24,329 x 1,801 1,295 300 x 22/171.6 x 70.9 51.0 11.58 x 0.75 8 J x 17 RO 471,295 (1,355)/ 294 x 19/ 13.00 x 1.10 171.6 x 70.9 51.02855 (2987) 2,415/95.21,370 (1,430)/ 159.2 x 69.5 53.1 330 x 28/ 11.43 x 0.393020 (3153) 1,345 (1,385)/ 7.5 J x 17 / 8.5 1,610 (1,655)/ 161.2 x 70.2 51.2 12.77 x no details 2965 (3053) 8 J x 18 / 3549 (3649) 290 x 10/ 1,430 (1,460)/ 2,429/95.7 162.2 x 70.4 51.1315/694 1,560/ 13.00 x 1.26 12.69 x no details 3153 (3219)0.29 x 1.96 = 0.57 1,630 (1,670)/ 324 x no details/ 7.5 J x 18 / 169.8 x 71.5 51.8 1,665/ 3439 11.82 x 0.87 3549 (3682) 0.30 x 1.97 = 0.5964/16.9 159.9 x 59.2 322 x no details 330 x 32/ 2,495/98.3 13.00 x 0.99 1,860/ 0.35 x 1.99 = 0.70 3671 275/628 1,290 (1,310)/ 0.35 x 1.91 = 0.67 11.11 x 0.47 300 x 22/ 4101 0.34 x 1.93 = 0.66 1,365 (1,385)/ 64/16.9 2,430/95.7 300 x 25/ 2844 (2888) 1,390 (1,410)/ c 1,590 (1,610)/ 300/661 3009 (3053) 1,465 (1,485)/ 282 x 12/ 1,525 (1,545)/ Approx. 2,649/104.4 3064 (3108) 1,509/ 3505 (3549) 1,780 (1,800)/ 62/16.4 1,631 (1,579)/ Approx. 3230 (3274) No details 300/661 1,820/ 3362 (3406) Approx. 2,400/94.6 3924 (3968) 3327 1,245/ 3596 (3481) Approx. 55/14.5 1,320/ 390/860 4012 2,400/94.6 No details 70 (9)/18.5 2745 295/650 1,535/ 2910 80/21.1 No details 60/15.9 3384 290/639 50/13.2 Rear Front Front [mm/in] [mm/in] x A) d Brake discs Brake calipers Aerodynamics Aerodynamics (c capacity in Tank l/US gal Luggage compartment capacity in l/cu ft Wheel size (front/rear) size Tire (front/rear) (values in brackets for 3.2 quattro SLK 350 Roadster (US Variant Roadster SRT-6 Criterionoptional AG) Brake system Boxster (2.7) Porsche Porsche Boxster S Audi TT Roadster BMW Z4 3.0i Mercedes-Benz Nissan 350Z Dimensions and weights Chrysler Crossfire Honda S Wheelbase (mm/in) Exterior dimensions (l x w h in mm/in) (DIN, unladen) Weight kg/lbs (EC, unladen) Weight kg/lbs Permissible gross weight kg/lbs Max. payload kg/lbs All data for EU-specification models, with the exception of the Nissan 350Z Roadster and Chrysler Crossfire Roadster SRT-6 (US- Roadster SRT-6 All data for EU-specification models, with the exception of Nissan 350Z Roadster and Chrysler Crossfire Note: Specifications concerning competing vehicles have been taken from brochures and press reports and from dealer businesses and from reports and press brochures Note: Specifications concerning competing vehicles have been taken from

130 16.3 Side-by-side comparison and from dealer businesses and branch- of Boxster/Boxster S and es; accuracy cannot be guaranteed. main competitors

Note: The following tables offer a comparison of EU-specification models for the German market. Specifications concerning competing vehicles have been taken from brochures and press reports

Figure 155: Boxster and Boxster S (987)

131 16.3.1 Audi TT Roadster 3.2 quattro

Figure 156: Audi TT Roadster 3.2 quattro

132 Criterion Advantages of the Boxster/Boxster S (987) vs. Audi TT Roadster 3.2 quattro Boxster and Boxster S

Engine / performance • Mid-engine for good agility and traction • Horizontally opposed engine concept for a lower center of gravity • Higher volumetric efficiency (Boxster: +7.8 kW/l / +10.6 HP/l; Boxster S: +7.1 kW/l / +9.7 HP/l) • Better power-to-weight ratio (Boxster: –1.1 kg/kW / –1.9 lbs/HP; Boxster S: –2.0 kg/kW / –3.2 lbs/HP) • Better acceleration values 0–100 km/h / 0– 62 mph (Boxster: –0.5 s; Boxster S: –1.2 s) • Higher top speed (Boxster: +6 km/h / 4 mph; Boxster S: +18 km/h / 11mph) • Better fuel economy l/100 km (Boxster: –1.1; Boxster S: –0.3) • Integrated dry sump lubrication Further advantage for Boxster S: • Higher output ( +30 HP)

Transmission • No product advantages

Chassis • Variable steering ratio for more agile driving behaviour and greater driving stability • Variable suspension and damping (PASM) optional • Sport Chrono Package for greater agility and driving pleasure optional • Individual memory and evaluation of driving data with Sport Chrono Package Plus in combination with PCM optional • 19-inch wheels available as an option Further advantage for Boxster S: • Porsche Ceramic Composite Brake (PCCB) optional • Larger wheel diameter for greater agility and better brake ventilation

Exterior • Electrically operated convertible top with one-touch/tip function up to 50 km/h / 30 mph for increased comfort • Side windows with water-repellent coating • Solution integrated in the vehicle concept: extending rear spoiler (instead of static rear spoiler) • Larger range of solid and metallic paints (+2/+5) • Larger range of convertible top colors (+1) • ParkAssist optional

Interior • Additional transport capacity through luggage compartments front and rear (+100 l/3.5 cu ft) • Better surface look and feel through the use of slush technology • Higher-quality door-trim panel with storage bin and leather handle • Adaptive fully electric sports seat with memory on driver’s side incl. electrically adjustable side bolsters optional • Fully electric seats with memory on driver’s side optional • Better readability and unique, high-quality look through white interior lighting • Wider range of customisation options through leather, aluminium, carbon and wood packages

Heating/air-conditioning • No product advantages

Electrics, audio and • CD radio as standard communication • BOSE® Surround Sound system optional • PCM with DVD navigation and 5.8″ display panel optional (instead of CD-ROM with TT) • Multi-function steering wheel optional • Rain sensor optional Further advantage for Boxster S: • Alarm system as standard

Safety and security • Higher passive safety through head airbags in the door-trim panels

Dimensions and weights • Better aerodynamics through lower cd value (Boxster: –0.06; Boxster S: –0.05) • More agile driving behaviour through considerably lower weight (Boxster: –265 kg/–584 lbs; Boxster S: –205 kg/–452 lbs) • More agile cornering behaviour through shorter wheelbase • 15 kg/33 lbs greater payload on Boxster (987)

Cost • Longer service intervals (30,000 km/18,693 mi instead of 25,000 km/15,533 mi) • Lower average fuel costs

133 16.3.2 BMW Z4 3.0i

Figure 157: BMW Z4 3.0i

134 Criterion Advantages of the Boxster/Boxster S (987) vs. BMW Z4 3.0i Boxster and Boxster S

Engine/performance • Mid-engine for good agility and traction • Horizontally opposed engine concept for a lower center of gravity • Higher volumetric efficiency (Boxster: +8.4 kW/l / +11.4 HP/l; Boxster S: +7.7 kW/l / +10.5 HP/l) • Better power-to-weight ratio (Boxster: –0.2 kg/kW / –0.4 lbs/HP; Boxster S: –1.1 kg/kW / –1.7 lbs/HP) • Higher output (Boxster: +9 HP; Boxster S: +49 HP) • Higher top speed (Boxster: +6 km/h / 4 mph; Boxster S: +18 km/h / 11 mph) • Higher revving • Integrated dry sump lubrication Further advantage for Boxster S: • Better acceleration value 0–100 km/h / 0–62 mph (–0.4 s) • Higher torque (+20 Nm/14.8 lbft)

Transmission • No product advantages

Chassis • Variable steering ratio for more agile driving behaviour and greater driving stability • Variable suspension and damping (PASM) optional • Sport Chrono Package for greater agility and driving pleasure optional • Individual memory and evaluation of driving data with Sport Chrono Package Plus in combination with PCM optional • Wider wheels on the driving axle for better traction • 19-inch wheels available as an option Further advantage for Boxster S: • Porsche Ceramic Composite Brake (PCCB) optional • Larger brake system at the front and rear axle incl. pad wear sensors • Larger wheel diameter for greater agility and better brake ventilation

Exterior • Electric convertible top with one-touch operation up to 50 km/h / 30 mph for increased comfort • Side windows with water-repellent coating • Larger range of solid, metallic and special colors (+1/+1/+5) • Larger range of convertible top colors Further advantage for Boxster S: • Wider wheels at the front and rear axle for a more sporty, dynamic design

Interior • Better surface look and feel through the use of slush technology • Better readability and unique, high-quality look through white interior lighting • Electric seat backrest adjustment • Wider range of customisation options through aluminium, carbon and wood packages • Illuminated vanity mirror

Heating/air-conditioning • Air conditioning as standard

Electrics, audio and • BOSE® Surround Sound system optional communication • Garage door opener optional Further advantage for Boxster S: • Alarm system as standard

Safety and security • Higher passive safety through head airbags in the door-trim panels

Dimensions and weights • Better aerodynamics through lower cd value (Boxster: –0.06; Boxster S: –0.05) • Greater range through larger tank capacity (+9 l/+2.4 US gal) • More agile cornering behaviour through shorter wheelbase • 15 kg/33 lbs greater payload on Boxster (MY 05) • Luggage compartment capacity 280 l/9.9 cu ft

Cost • Longer service intervals (30,000 km/18.639 mi instead of 25,000 km/15.533 mi)

135 16.3.3 Mercedes-Benz SLK 350

Figure 158: Mercedes-Benz SLK 350

136 Criterion Advantages of the Boxster/Boxster S (987) vs. Mercedes-Benz SLK 350 Boxster and Boxster S

Engine/performance • Mid-engine for good agility and traction • Horizontally opposed engine concept for a lower center of gravity • Higher volumetric efficiency (Boxster: +8.3 KW/l / +11.4 HP/l; Boxster S: +7.6 KW/l / +10.2 HP/l) • Higher top speed (Boxster: 6 km/h / 4mph; Boxster S: +18 km/h / 11 mph) • Better fuel economy l/100 km (Boxster: –1.2; Boxster S: –0.4) • Higher revving • Integrated dry sump lubrication Further advantage for Boxster S: • Higher output (+8 HP) • Better power-to-weight ratio (–0.4 kg/kW / –0.7 lbs/HP)

Transmission • No product advantages

Chassis • Variable steering ratio for more agile driving behaviour and greater driving stability • Variable suspension and damping (PASM) optional • Internally ventilated and perforated brake discs on the rear axle also • Sport Chrono Package for greater agility and driving pleasure optional • Individual memory and evaluation of driving data with Sport Chrono Package Plus in combination with PCM optional • 19-inch wheels available as an option Further advantage for Boxster S: • Porsche Ceramic Composite Brake (PCCB) optional

Exterior • Electric convertible top with one-touch operation up to 50 km/h / 30 mph for increased comfort • Side windows with water-repellent coating • Extended range of convertible top colors (+4)

Interior • Better surface look and feel through the use of slush technology • Adaptive fully electric sports seat with memory on driver’s side incl. electrically adjustable side bolsters optional • Electric seat backrest adjustment • Better readability and unique, high-quality look through white interior lighting • Wider range of customisation options through leather, aluminium, carbon and wood packages

Heating/air-conditioning • No product advantages

Electrics, audio and • CD radio with 4 loudspeakers as standard communication Further advantage for Boxster S: • Alarm system as standard

Safety and security • Higher passive safety through head airbags in the door-trim panels

Dimensions and weights • Better aerodynamics through lower cd value (Boxster: –0.05; Boxster S: –0.04) • More agile driving behaviour through considerably lower weight (Boxster: –95 kg/–209 lbs; Boxster S: –40 kg/–88 lbs) • More agile cornering behaviour through shorter wheelbase • The full extent of the 280 litre/9.9 cu ft luggage compartment can be used and accessed even when the convertible top is open

Cost • No product advantages

137 16.3.4 Nissan 350 Z Roadster

Figure 159: Nissan 350 Z Roadster

138 Criterion Advantages of the Boxster/Boxster S (987) vs. Nissan 350 Z Roadster Boxster and Boxster S

Engine/performance • Mid-engine for good agility and traction • Horizontally opposed engine concept for a lower center of gravity • Higher volumetric efficiency (Boxster: +6.6 kW/l/+9.1 HP/l; Boxster S: +5.9 kW/l/+7,9 HP/l) • Better power-to-weight ratio (Boxster: –0.2 kg/kW/–0.1 lbs/HP Boxster S: –1.1 kg/kW/–1.4 lbs/HP) • Higher top speed (Boxster: +6 km/h / 4 mph; Boxster S: +18 km/h / 11 mph) • Lesser environmental burden through compliance with stricter emission standards (EU4) • Better fuel economy l/100 km (Boxster: –1.8; Boxster S: –1.0) • Integrated dry sump lubrication Further advantage for Boxster S: • Better acceleration value 0–100 km/h / 0–62 mph (–0.4 s)

Transmission • No product advantages

Chassis • Variable steering ratio for more agile driving behaviour and greater driving stability • Variable suspension and damping (PASM) optional • Sport Chrono Package for greater agility and driving pleasure optional • Individual memory and evaluation of driving data with Sport Chrono Package Plus in combination with PCM optional • Wider wheels on the driving axle for better traction • Tire sealing compound in place of the spare wheel results in more storage space and less weight Further advantage for Boxster S: • Porsche Ceramic Composite Brake (PCCB) optional

Exterior • Electric convertible top with one-touch operation up to 50 km/h / 30 mph for increased comfort • Side windows with water-repellent coating • Hardtop available • Larger range of solid, metallic and special colors (+3/+5/+4) • Larger range of convertible top colors (+2)

Interior • Additional transport capacity through luggage compartments front and rear (+45 l/1.6 cu ft) • Better surface look and feel through the use of slush technology • Adaptive fully electric sports seat with memory on driver’s side incl. electrically adjustable side bolsters optional • Fully electric seats with memory on driver’s side optional • Better readability and unique, high-quality look through white interior lighting • Larger range of interior and leather colors (+4/+3) • Wider range of customisation options through leather, aluminium, carbon and wood packages

Heating/air-conditioning • No product advantages

Electrics, audio and • PCM with DVD navigation optional communication • BOSE® Surround Sound system optional • Alarm system with radar interior surveillance for Boxster optional • Rain sensor optional • Garage door opener optional Further advantage for Boxster S: • Alarm system as standard

Safety and security • No product advantages

Dimensions and weights • More agile driving behaviour through considerably lower weight (Boxster: –230 kg/–507 lbs ; Boxster S: –170 kg/–375 lbs) • 20 kg/44 lbs greater payload on Boxster (MY05)

Cost • No product advantages

139 16.4 Overview of product advantages/ customer benefits

Features Product advantages/ customer benefits Boxster S (987 S) Boxster (987) Audi TT Roadster 3.2 quattro BMW Z4 3.0i Mercedes-Benz SLK 350 Nissan 350Z Roadster Drive

Design, number of cylindersHorizon- Horizon- V6 R6 V6 V6 Minimum vibration, lower center of gravity tally tally opposed opposed for high driving performance 6 6 Mid-engine + + 0 – – – Good agility and very good traction through greater weight on the driving axle (clear advantage/benefit)

Fuel consumption ++ ++ 0 ++ + 0 Reduced cost of ownership

Exhaust emissions (g/km) ++ ++ 0 ++ + 0 Lesser environmental burden and reduced cost of ownership

Integrated dry sump lubrication + + ––––Ensures that the engine is lubricated even with extreme lateral and longitudinal acceleration (clear advantage/benefit) Chassis Rack-and-pinion steering, ++ ++ – + + 0 Direct feedback from the road, greater agili- variable steering ratio ty and better handling with a high level of driving stability (clear advantage/benefit)

Standard chassis ++ ++ + ++ + + Optimum compromise between performance-oriented and practical chassis

Systems for driving dynamics control ++++++++Very high active driving safety combined and traction improvement with increased agility and driving pleasure through Porsche Stability Management (PSM)

Active chassis/ sports chassis ++ ++ 0+ + – “Active sports chassis” extremely sporty PASM PASM Sports Sports performance with max. comfort, (option) (option) chassis chassis (option) (option) Porsche Active Suspension Management (PASM) (clear advantage/benefit)

Sport Chrono Package ++ ++ – + + – Increased driving pleasure (Sports programme) (option) (option) (clear advantage/benefit)

Large and wide wheel/tire combination ++ + 0 0 + + More agile driving behaviour and better as standard traction without sacrificing comfort, 19-inch available as an option (clear advantage/benefit) Brake system Multi-piston aluminium fixed-caliper brake ++ ++ ++ ++ + ++ Optimum deceleration values and high system, perforated and internally ventilated stability for high active driving safety discs, comprehensive ventilation

Ceramic brake system (PCCB) ++ –––––Even greater performance (option) (clear advantage/benefit; unique selling point)

140 Features Product advantages/ customer benefits Boxster S (987 S) Boxster (987) Audi TT Roadster 3.2 quattro BMW Z4 3.0i Mercedes-Benz SLK 350 Nissan 350Z Roadster Interior Adaptive sports seats with ++ ++ ––––Individual adaptation to the respective seat-width adjustment (option) (option) driver and driving situation (clear advantage/benefit; unique selling point) Exterior Aerodynamics ++ ++ 0 0 0 + Low drag for high top speed, low fuel consumption, low lift coefficient and optimum aerodynamic balance for safe handling

Roof system: convertible top operation ++++––––Increased comfort through operation of the up to 50 km/h /30 mph convertible top when driving (clear advantage/benefit; unique selling point)

Luggage compartment ++ ++ – – +++ + Additional transport capacity through with larger luggage compartment conv. top closed

Water-repellent side windows ++ ++ ––––Better visibility in traffic in bad weather conditions

Extended color range ++ ++ + 0 ++ 0 Wider range of customisation options through availability of additional metallic and special colors

Convertible top colors ++ ++ + + – 0 Wider range of customisation options through availability of additional convertible top colors Safety and security Head airbags in the doors ++ ++ ––––Effective head protection in a side impact (unique selling point) Overview Power-to-weight ratio ++ + – – – + – Low power-to-weight ratio for high acceleration potential and agility

Top speed ++ + 0000

Evaluation scheme: The evaluations, particularly those of ++ significantly better the competition, are based on techni- + better cal data, official sales documents, 0 comparable press releases as well as internal – worse comparisons of Porsche AG. All infor- – – significantly worse mation is correct to the best knowledge, accuracy cannot be guaranteed.

141 Publisher's data

Confidential!

This training material is intended solely for internal use within the Porsche sales organization.

Note: All information provided in this document is correct as at June 2004. Porsche reserves the right to al- ter design, technical specification, prices, equipment and final scope of delivery at any time prior to the market launch of the Boxster and the Boxster S. All descriptions are based on the EU model.

Country-specific changes as well as changes to product features are possible up to the launch and over the service life of the vehicle.

Date: June 2004.

Printed in Germany. Errors and alterations excepted.

142 U3 U4