RS 6 '02

History

The Audi RS6 quattro, commonly referred to as the RS6, is the highest performing version, and top-of-the-line specification of the Audi A6, positioned above the Audi S6. It is a mid-size sports-focused executive car, produced by
the high performance private subsidiary company quattro GmbH, for Audi AG, part of the Volkswagen Group.

Both versions of the RS6 are, or have been produced as, a five-door five-seat "Avant", Audi's name for an estate car–station wagon, along with a four-door five-seat saloon–sedan. Based on the A6 platform, the RS6's internal
combustion engines are front-mounted and longitudinally oriented, while the transmission is mounted immediately at the rear of the engine in a longitudinal orientation, in the form of a transaxle. Unlike the A6 and S6, however,
the RS6's engines have not been shared with any other vehicle in Audi's lineup.

The "RS" initials are taken from the German: RennSport – literally translated as "racing sport", and is Audi's ultimate 'top-tier' high performance trim level, positioned a noticeable step above the "S" model specification level of
Audi's regular model range line-up. Like all Audi "RS" models, the RS6 pioneers some of Audi's newest and advanced engineering and technology, and so could be described as a halo vehicle, with the latest RS6 having the most
powerful internal combustion engine out of all Audi models, with more power than the physically larger Audi S8. Furthermore, like all RS models, the RS6 is only available with Audi's 'trademark' Torsen-based quattro permanent
four-wheel drive system.

The C5 RS6 was the fourth model to come out of Audi's private subsidiary company, "quattro GmbH". The first was the Audi RS2 Avant, from a joint venture between Porsche and quattro GmbH for the Audi marque. The second was the Audi
C4 S6 Plus, produced from April 1996 to July 1997. Third was the 2000 Audi B5 RS4; the fifth was the 2005 Audi B7 A4 DTM Edition saloon, and the sixth was the 2006 Audi B7 RS4. The seventh and current (as of January 2010) quattro
GmbH model is the latest Audi C6 RS6.

Production of the original Audi C5 RS6 began in June 2002 and ended in September 2004. The second and current Audi C6 RS6 was introduced at the 2007 Frankfurt Motor Show. The original RS6 was the first Audi RS model exported to
North America, while the succeeding C6 RS6 is only sold in Europe.

Its main market competitors include BMW M5 and Mercedes-Benz E55/E63 AMG.

The original Audi C5 RS6 quattro (Typ 4B) was the top-of-the-line user of the Volkswagen Group C5 platform (1997–2004), and was initially available as a five-door five-seat Avant - Audis name for an estate or station wagon. A
four-door five-seat saloon/sedan followed shortly after the launch of the Avant. Derived from the Audi C5 S6 (itself derived from the Audi C5 A6), the RS6 also shares the aluminium structure from the firewall and forward with the
C5 A6s with V8 engines (A6 4.2 V8 quattro, S6 saloon/Avant). It was manufactured from July 2002 through to September 2004.

Official performance figures for the Avant, whilst consuming the recommended high octane 98 RON "Super Plus" unleaded petrol indicate the 0-100 kilometres per hour (62.1 mph) dash would be completed in 4.6 seconds (s), reaching
200 km/h (124.3 mph) in 16.8 seconds (16.6 s for the saloon). Official figures state an electronically limited top speed of 250 km/h (155.3 mph), although most "RS" owners report that the speed limiter is rather liberal on all RS
cars, with genuine 'limited' top speeds of 270 km/h (167.8 mph) being possible to achieve. Using a lower octane rated petrol, such as the standard 95 RON "Premium" unleaded will reduce the engine power output, and have logical
reduction in performance.

Luggage capacity, measured according to the VDA block method in the Avant ranges from 455 litres (16.07 cu ft), to 1,590 litres (56.15 cu ft) with the rear seats folded down. For the saloon, the boot holds 424 litres (14.97 cu ft).

For the C5 RS6 powertrain detail, the internal combustion engine is an all-aluminium alloy 4,172 cubic centimetres (254.6 cu in) twin-turbocharged ('biturbo'), twin double overhead camshaft (2xDOHC), 5 valve per cylinder version of
Audi's 4.2 litre 90° V8 petrol engine (parts code prefix: 077, identification code: BCY), developed and manufactured in the Germany and UK by quattro GmbH and Cosworth Technology (now known as MAHLE Powertrain). With the addition
of the two turbochargers (one per cylinder bank), the motive power output of the V8 engine was increased to 331 kilowatts (450 PS; 444 bhp) at 5,700 to 6,400 rpm, and generated 560 newton metres (413 ft·lbf) of torque. The
combination of the 4.2 litre V8, variable inlet valve timing, and twin turbochargers gave the RS6 an exceptionally wide power band, with peak torque available from 1,950 to 5,600 rpm.

Further detail of the engine includes fully sequential electronic multi-point fuel injection with intake manifold-sited fuel injectors, mapped direct ignition system with solid-state high voltage distribution using eight individual
single-spark ignition coils and NGK longlife spark plugs, and three knock sensors. Engine management uses a Bosch Motronic ME 7.1.1 engine control unit, which controls all functions of the engine operation; including fuel delivery,
ignition system, valve timing, emissions control systems, and torque reduction control - the latter operating in conjunction with the Bosch ESP 5.7 Electronic Stability Programme, as part of the "Anti Slip Regulation" (ASR)
traction control system. The engine is compliant with the European Union Euro3 (EU3) standard, and includes two close-coupled primary catalytic converters (CATs), two underfloor main CATs, and four heated oxygen sensors which
manage the cylinder bank selective lambda control. This results in a CO2 emissions rating of 350 g/km for the Avant and saloon in standard configuration.

It has an electronically-controlled five-speed ZF 5HP24A tiptronic automatic transmission (parts code prefix: 01L, identification code: GAG) (gear ratios - 1st: 3.571, 2nd: 2.200, 3rd: 1.505, 4th: 1.000, 5th: 0.804), with lock-up
torque converter in all forward gears. It has "hill detection" capability, and, despite many press articles stating that the gearbox was programmed to "blip" the throttle for downshift gear changes, no UK owners have ever found
this feature to be present. The transmission control unit ECU incorporates "fuzzy logic" with its "Dynamic Shift Programme" (DSP), with the shift pattern adapting to suit individual driving styles. 'tiptronic' manual control can
be achieved with either the floor mounted gear shift lever, or the steering wheel mounted 'paddles'.

The RS6 was only available with Audi's Torsen-based quattro permanent four-wheel drive, utilising the Torsen T-2 dynamic 'automatic torque biasing' (ATB) centre differential (diff), a modified unit which was being used in the 6.0
litre W12-powered Audi D2 A8. The torque from the engine is first routed from the gearbox output shaft to the Torsen centre diff, and then automatically divided and apportioned between the front and rear axles.

The front and rear axle differentials (ratio: 3.197) are a conventional "open" type, but utilise an "Electronic Differential Lock" (EDL). EDL is an integrated additional function of the Bosch Electronic Stability Programme (ESP)
system, and works by monitoring and comparing the individual roadwheel speeds across an axle, and braking an individual wheel which is sensed to have lost traction (spinning), thus transferring torque across the axle to the
wheel/tire which does have grip. "Anti-Slip Regulation" (ASR), more commonly known as traction control system completes the Bosch ESP-related driver aids.

Utilising the same fully independent four-link front suspension, and double wishbone rear, as its related A6 and S6, the RS6 was lowered by 20 millimetres (0.79 in), with a 30% stiffer spring rate, and 40% increased compression
damping. The RS6 also served as the debut model for Audi's "Dynamic Ride Control" (DRC) system. The DRC system is mainly mechanical, and uses a pump to provide additional pressure to individual dampers (shock absorbers) during
cornering, acceleration or braking; to counteract rolling and pitching. The system can adjust the stiffness at each individual damper constantly; to maintain both a comfortable ride on straight roads, and high level of poise and
grip when cornering hard, accelerating, or braking. The DRC's main advantage is that it operates without the need for complicated electronics, as required in similar systems from Mercedes-Benz and other competitors. Its main
drawback is that the DRC dampers have been known to fail (leaking fluid from the cross-linked circuits), which can affect the handling and ride quality of the vehicle; some owners have reported needing multiple replacements of
faulty DRC units and many drivers have opted to replace the system with simpler and more reliable aftermarket coilover suspension.

The front brakes feature fixed Brembo eight-piston monoblock brake calipers, with four pads in each caliper, working with floating and radially vented brake discs, sized at 365 millimetres (14.4 in) in diameter, by 33 mm (1.30 in)
thick. The rear features single-piston floating ATE calipers with integrated cable-operated parking brake mechanism, mated to floating and radially vented disc, sized 335 mm (13.2 in) by 23 mm (0.91 in). Front and rear brake
calipers are finished in a high-gloss black paint, with the fronts incorporating the Audi "RS" logo. Both front and rear floating discs are held in by metal pins to the lightweight disc hub, and allow 1.0 mm (0.039 in) of lateral
thermal expansion from the hub centre.

Bosch ESP 5.7 Electronic Stability Program, with Anti-lock Braking System (ABS), Electronic Brakeforce Distribution (EBD), and Brake Assist (BA) was standard fitment.

There were total of three original equipment manufacturer (OEM) roadwheel and tire types produced for the RS6. In Europe and elsewhere, 19" wheels were standard, with an optional 18" package. In the U.S. market, the 18" package
was the only available offering. An 18" winter package, with Dunlop SP Winter Sport M3 tires (225/45 ZR18 95V) was universally available.

For 18" wheels, the standard tire fitted was 255/40 ZR18 99Y XL with eXtraLoad (XL) rating. This is often stressed, and is the only recommendation by Audi, as RS6 does weigh 1,865 kilograms (4,112 lb). Tires which are not rated XL
are not safe (nor legal, in most countries) for use. Owners reported finding Continental ContiSportContact 2, Dunlop SP Sport 9000, Michelin Pilot Sport PS2, and Pirelli P-Zero Rosso as OEM suppliers for tires on the RS6. However,
according to ETKA, the Dunlop and Pirelli tires were subsequently withdrawn from official supply, and the Continental SportContact 2 has been superseded by the SportContact 3. An additional tire from Bridgestone has now been
included as officially recommended fitment, the Potenza RE050A.

For 19" wheels, the standard tire fitted was 255/35 ZR19 96Y XL. However, there were debates as to how safe 19" wheels and tires are, as the XL rating achieves a 96 Load Index (710 kg (1,565 lb) load rating). In contrast, the
255/40 ZR18 XL will get you 99 Load Index, good for 775 kg (1,709 lb) per tire. Current officially recommended tires from ETKA for the 19" rims only include the Michelin Pilot Sport PS2, Continental ContiSportContact 3 and
Vredestein Ultrac Sessanta also 96Y XL.

Rack and pinion speed-sensitive "servotronic" power steering was also standard, with a ratio of 16.2, and a turning circle of 11.4 metres (37.4 ft).

Between April and September 2004, there was a final limited run of an even higher-performance RS6, named the Audi RS6 Plus. This had an increased engine power output (identification code: BRV), and produced over 353 kilowatts
(480 PS; 473 bhp) at 6,000-6,400 rpm, with the same 560 newton metres (413 ft·lbf) of torque at 1,950-6,000 rpm. This engine was also developed and manufactured in the UK by Cosworth Technology (now known as MAHLE Powertrain). The
additional performance was achieved with a new engine control unit (ECU), and two additional coolant radiators behind the side-mounted intercoolers (these were standard fitment on the standard RS6 in hotter climate countries).
Official performance figures indicate the discipline of sprinting from standstill to 100 kilometres per hour (62.1 mph) in 4.6 seconds. The RS6 Plus carries on to reach 200 km/h (124.3 mph) in 17.36 seconds, and has an official
top speed of 280 km/h (174.0 mph).

The RS6 Plus came with Dynamic Ride Control (DRC) as standard, and also included a no-cost option of "Sports Suspension Plus", which lowered the standard sports suspension by a further 10 millimetres (0.39 in) over the standard
RS6. A revised steering rack, with a reduced ratio of 14.3 for firmer steering feel was included, and resulted in a turning circle of 11.7 metres (38.4 ft). The brakes now included cross-drilled discs. The wheels were only
available in the 9Jx19" '5-arm design' alloys, finished in "anthracite" (dark grey), with 255/35 ZR19 96Y XL tires.

The car was available only as an Avant, and was sold only in European markets. Visual differences for the RS6 Plus included the "black optic pack", which consisted of black finish to the framing of the radiator grille, exterior
window trims, tailgate lower trim, roof rails, and exhaust tailpipes. It quickly sold out once it was released (999 units total). The last three digits of the Vehicle Identification Number (VIN) are reproduced on a plaque inside
the car, displayed on the centre console.

The RS6 was used in the North American SPEED World Challenge GT Series of auto racing for three years - 2002 to 2004, claiming the manufacturers' championship victory successively in all three years. Once again, the special race
derivative of the twin-turbo V8 engine was developed and manufactured in the UK by Cosworth Technology (now known as MAHLE Powertrain). However, the 2005 season proved difficult due to performance restrictions imposed on Champion
Audi Racing by the Sports Car Club of America (SCCA), with Champion deciding to run a different roadwheel diameter, and the trade off was reducing boost pressure.

The RS6 was challenged by a factory-backed Cadillac CTS-V, but was still victorious. Champion Audi Racing decided to pull the RS6 from the series, citing unfair rules and regulations that targeted the dominant Audis.

 

GT5 Specs

Country
Production
Start
End
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Cost
US$
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Body Style
2 DR
4 DR
Hatch
Wagon
SUV
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Seats #
Engine
Type
Displacement (cc)
none
Power (HP)
Matrix Power (HP)
Best
Stock
Stealth
Max
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Torque
LB/FT
Stock
Stealth
Max
none
PowerPoints
Default
Minimum
Maximum
none
Stock
Stealth
Weight
Min
Max
Aspiration
Stock
Supercharger
Turbo
none
none
Drivetrain
FF
FR
MR
RR
AWD
none
none

 

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