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Audi S4



Generation 3



The third generation Audi S4 quattro (Typ 8E — saloon: 8E2, Avant: 8E5, and Cabriolet: 8H7) debuted its saloon and Avant bodystyles in Europe in March 2003, and appeared in North America slightly later. This was based on the latest Volkswagen Group B6 (PL46) platform used by the then current Audi B6 A4. Despite having moved to an entirely new platform, one of the S4's most publicised new features was its new internal combustion engine - a 4.2 litre V8 engine. Following its initial launch of either a four-door five-seat saloon (sedan), or a five-door five-seat Avant (estate/wagon), it eventually became available in three bodystyles - and for the first time in the Audi 'S' car range, from February 2004, a two-door four-seat Cabriolet (convertible), Typ 8H, was included in the model range.

Audi S4


Official performance figures for standard discipline of sprinting from standstill to 100 kilometres per hour (62.1 mph) in the saloon with manual transmission are 5.6 seconds (Avant 5.8 s, Cabriolet 5.9 s), however, a road test conducted by the American automotive magazine Motor Trend indicated that it could go from a standstill to 60 mph (96.6 km/h) in less than 5 seconds, and make it to 200 km/h (124.3 mph) in slightly over 20 seconds, although doing this led to fuel consumption dipping into single digits. This was considerably worse than the earlier V6 models, leading to the addition of a $1,700 gas guzzler tax (combined 20.2 miles per US gallon (11.6 L/100 km; 24.3 mpg-imp)) for the six-speed manual sedan in the United States. Top speed is electronically limited to 250 km/h (155.3 mph).

Audi S4


The B6 S4 saloon and Avant variants ceased factory production in December 2004, with the Cabriolet ending twelve months later at December 2005.

Replacing the 2.7 litre 'biturbo' V6 engine of the previous generation B5 S4, the new B6 S4 powertrain gained an all-aluminium alloy 4.2 litre, 40 valve (five valves per cylinder) V8 engine (parts code prefix: 079.C, identification code: BBK), with twin chain-driven (at the rear of the engine) two double overhead camshafts (2xDOHC) (two per cylinder bank - 'quad cam'), roller-finger rocker arm cam followers, and included variable inlet camshaft timing. It also utilised a strengthened alloy crankshaft bedplate for the five main bearings, and a two-part baffled oil sump, and a light-alloy variable intake manifold (VIM), containing the sequentially actuated fuel injectors. This petrol engine, based on the unit from the Audi A8, displaces 4,163 cubic centimetres (254.0 cu in), and it produces a motive power output of 253 kilowatts (344 PS; 339 bhp) at 7,000 revolutions per minute (rpm), and generates torque of 410 newton metres (302 lbf·ft) at 3,500 rpm, making it more potent than the RS2 Avant, and nearly as powerful as the B5 RS4. Engine management was by way of a Bosch Motronic ME 7.1.1 electronic engine control unit (ECU), utilising a Bosch 'E-Gas' drive by wire electronic throttle, and powering eight individual spark coils with longlife quad-electrode Bosch spark plugs. Ignition timing is a mapped direct ignition, with cylinder-selective knock control with the aid of four knock sensors. The exhaust system includes vacuum-operated valves in the twin rear silencers (mufflers), finished with chrome plated tail-pipes.

Audi S4 Avant


Like its predecessors, the B6 S4 was standard with a Getrag six-speed (M6S) manual transmission (parts code prefix: 0A3, identification codes: FVD, HEP) (gear ratios - 1st: 3.667, 2nd: 2.050, 3rd: 1.462, 4th: 1.133, 5th: 0.919, 6th: 0.778), with a 240 millimetre single plate dry clutch, and Torsen T-2 quattro permanent four-wheel drive system. Final drive (parts code prefix: 01R, identification code: EXZ) ratios are 3.889, giving a top gear road speed to engine revs ratio of 24.4 miles per hour (39.3 km/h) per 1000 rpm. From July 2003, the ZF 6HP19 tiptronic automatic transmission (parts code prefix: 09L, identification codes: GUR, HHU) (ratios - 1st: 4.171, 2nd: 2.340, 3rd: 1.521, 4th: 1.143, 5th: 0.867, 6th: 0.691, with a final drive (identification code: GDF) ratio of 3.539) was included as an option.

Audi S4 Avant


An unusual sight in the engine compartment was the addition of water cooling for the 190 amp alternator, along with two additional thermostatically-controlled side-mounted radiators.

The B6 S4 came equipped with electronically controlled, variable assisted 'servotronic' rack and pinion power assisted steering (PAS) as standard.

Audi S4 Cabriolet


B6 S4 brakes consisted of radially ventilated disc brakes front and rear. The front discs are sized at 345 millimetres (13.58 in) in diameter by 30 mm (1.181 in) thick, and are clamped by Continental Teves-ATE FNRG-60 single-piston sliding brake calipers. The rears are 300 mm (11.81 in) by 22 mm (0.866 in), and again use single-piston sliding calipers, with an integrated cable-operated hand brake mechanism. A Bosch ESP 5.7 Electronic Stability Programme system, complete with Anti-lock Braking System (ABS), Electronic Brakeforce Distribution (EBD), Emergency Brake Assist (EBA), Electronic Differential Lock (EDL) and Anti-Slip Regulation (ASR) - also known as traction control system, coupled with a dual-rate tandem vacuum servo provided the brake actuation.

Audi S4 Cabriolet


Standard alloy wheels were 'Avus-III' die-cast aluminium alloy, 8.0Jx18H2 ET45 in size, and shod with 235/40 ZR18 95Y XL (eXtra Load) high performance tyres, with factory supplies being either Continental SportContact2 or Michelin PilotSport PS2.

Discrete lower door trims, along with the now trademark Audi 'S' model vertical-emphasis line grille, and solid aluminium (later replaced with plastic covered by aluminium) exterior door mirrors, and S4 badging front and rear are all that visually distinguish the S4 from its related A4 brethren. In the interior, front and rear Recaro seats (fronts fully electric), standard carbon fiber trims, as well as S4 logos in the instrument panel and door sills complete the detail.

Audi S4 Cabriolet

Leave a comment about the Audi S4 (2002-) :





Source :
  1. www.audi.com
  2. www.audi-100-coupe-s.de/
  3. perso.wanadoo.fr/ammar/Audi
  4. www.audipassion.com
  5. en.wikipedia.org/ Audi
  6. www.audiclubna.org/
  7. membres.lycos.fr/audi100avantperso
  8. www.audi60.de/
  9. members.aol.com/c1j1miller/index.html
  10. www.audi100-online.com/
  11. www.audi-a2.com/
  12. www.geocities.com/a2_audi/unofficial_audi_a2_homepage.html
  13. www.auditt.org/
  14. www.seansa4page.com
  15. www.rs4.org/
  16. www.audi-tt.org/
  17. www.audisportcollection.com
  18. www.audi.fr


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