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Audi RS4 AM02-0027 history

Jun. 09, 2022

Audi RS4 AM02-0027

The Audi RS 4 is the high-performance variant of the Audi A4 range produced by Audi Sport GmbH for AUDI AG, a division of the Volkswagen Group. It sits above the Audi S4 as the fastest, most sports-focused car based on the A4's "B" automobile platform. The RS 4 was reintroduced in 2012, based on the A4 Avant instead of the sedan as did the original model.

Audi RS4 AM02-0027 history

The original B5 version was produced only as an Avant, Audi's name for an estate car/station wagon. The second version, the B7, was released initially as a four-door five-seat saloon/sedan, with the Avant following a short while later. A two-door four-seat Cabriolet version was subsequently added.

 The "RS" initials are taken from the German RennSportliterally translated as "racing sport", and is the Audi marque's highest trim level, positioned above the "S" model specification of Audi's regular model line-up. Like other Audi "RS" cars, the RS 4 pioneers some of Audi's latest advanced technology. It is only available with Audi's Torsen-based "trademark" quattro permanent four-wheel drive system.

 Its main market competitors include the BMW M3, Mercedes-Benz C63, Lexus IS-F and cadillac ATS-V.

 B5 (Typ 8D, 19992001)

Audi RS4 AM02-0027 history

The original B5 Audi RS 4 Avant quattro (Typ 8D)was introduced by Audi in late 1999, for main production and sale from 2000, as the successor to the Porsche / Quattro GmbH joint venture-developed Audi RS2 Avant. Like its predecessor, the RS 4 was available only as an Avant and was built on an existing platform, in this case, the Volkswagen Group B5 platform shared with the A4 and S4. Retail price was around DM 103,584. The RS 4 was available for sale in most of Europe, parts of Asia and in some Latin American countries.

 Audi produced 6,030 units between 1999 and 2001.

 B5 bodywork and styling

Although related to the B5 S4, many of the outer body panels were altered, with wider front and rear wheel arches to allow for the wider axle track on the RS 4. With unique front and rear bumpers and side sills, and the rear spoiler from the S4 Avant, the aerodynamic modifications achieved a drag coefficient of Cd 0.34. Although the B5 S4 came in a saloon car body style, the B5 RS 4 was only available in the Avant version.

 Luggage space, measured according to the industry standard VDA method was 390 litres (13.8 cu ft) with the rear seats in the upright position, and 1,250 litres (44.1 cu ft) with the seats folded flat.

B5 powertrain

The engine was developed from the 2.7 litre 90° V6 'biturbo' used in the B5 S4. It displaced 2,671 cubic centimetres (163.0 cu in) and had five valves per cylinder. The engine was developed and manufactured in the UK by Cosworth Technology. It featured aluminium alloy ALSi7Mg cylinder heads, cast by Cosworth, with enlarged intake ports and smaller exhaust ports, two parallel BorgWarner K04-series turbochargers, two larger side-mounted intercoolers, dished piston crowns, stronger connecting rods, larger intake ducting, an enlarged exhaust system, and a re-calibrated engine management system. The modifications increased the engine's output from 195 kW (265 PS; 261 bhp) and 400 N⋅m (295 lbf⋅ft) of torque to 280 kW (381 PS; 375 bhp) at 7,000 rpm and 440 N⋅m (325 lbf⋅ft) at 6,000 rpm. The engine was controlled by a Bosch Motronic[4] ME 7.1 electronic engine control unit, using a Bosch 'E-Gas'[5] electronic drive by wire throttle. It had multipoint sequential fuel injection, a mass airflow sensor, and six individual ignition coils. The engine oil was cooled by oil to water and oil to air coolers.

Audi RS4 AM02-0027 history

A six-speed manual transmission (parts code prefix: 01E, identification code: FDP) (gear ratios—1st: 3.500, 2nd: 1.889, 3rd: 1.320, 4th: 1.034, 5th: 0.806, 6th: 0.684), cooled by a NACA duct in the engine undertray, and Audi's Torsen-based quattro system, using the Torsen T-1 "automatic torque biasing" center differential, with a 50:50 default bias were standard. Final drive ratio was 4.111.

 The RS 4 has a curb weight of 1,620 kg (3,571 lb). It can accelerate from 0-100 km/h (62.1 mph) in 4.9 seconds, 0-160 km/h (99.4 mph) in 11.3 seconds, and 0-200 km/h (124.3 mph) in 17.0 seconds. The top speed is electronically limited to 250 km/h (155 mph).

 B5 brakes, wheels and tyres

Brakes were also developed jointly in house by Audi's quattro GmbH, not by Porsche as with its predecessor, the RS2. At the front they were radially vented and floating cast iron discs, 360 mm (14.2 in) diameter and 32 mm (1.26 in) thick, with double-piston floating calipers, and at the rear 312 mm (12.3 in) by 22 mm (0.87 in) discs with a single-piston floating caliper. The RS 4 needed less than 50 metres (160 ft) to come to a full stop from a speed of 110 km/h (68 mph).

Audi RS4 AM02-0027 history

The standard wheels were 18 inch alloy wheels (8½×18" "9-spoke"), with 255/35 ZR18 high performance tyres. Optional "winter" alloy wheels were also available, at 18 inch (7½J×18"), with 225/40 R18 92V tyres.

Other B5 notable features

"Sideguard", Audi's curtain airbag system.

Xenon High-Intensity Discharge (HID) headlamps.

 B7 (Typ 8E, 2006–2008)

Audi RS4 AM02-0027 history

There was no RS 4 built on the Audi "B6" platform, which served as the basis for the Audi A4 between 2001 and 2005. However, the second Audi RS 4 quattro(Typ 8E) was built on Audi's "B7" platform, by quattro GmbH in Neckarsulm, Germany. It was unveiled in February 2005 at Audi's 'quattro Night' celebration at the company headquarters in Ingolstadt, Germany.

 The RS 4 became available to European customers in mid-2006. It was introduced at the 2006 North American International Auto Show in January, and arrived in June 2006 in North America. The production run of the B7 RS 4 was 2006 to 2008 inclusive, although only 2007 and 2008 model year were sold in the United States. Approximately 10,000 B7 RS 4s were built, of which around 2,000 are in the USA.

 The B7 RS 4 Cabriolet was sold in Europe from late 2006 to 2008. It was also available in the US in limited numbers per year and sold at a premium of $2000 over the list.

Audi RS4 AM02-0027 history

Audi factory numbers indicate that the B7 RS 4 saloon can accelerate from 0 to 100 km/h (0 to 62 mph) in 4.8 seconds,and arrive at 0 to 200 km/h (0 to 124 mph) in 16.6 seconds. Most European magazines recorded results in line with the November 2009 comparison of "ultimate sedans" in Road & Track, which recorded a 0 to 60 mph (97 km/h) time of 4.5 seconds. For the Avant, 0 to 100 km/h (0 to 62 mph) is reached in 4.9 seconds. Top speed for all variants is "officially" electronically limited to 250 km/h (155.3 mph).

 B7 bodywork and styling

The B7 RS 4 is an almost complete departure from previous Audi "RS" cars, as it was initially available as a four-door five-seat saloon/sedan;with a five-door five-seat Avant, and two-door four-seat Cabriolet versions arriving later. Only the Audi RS 6 had taken this similar route (saloon and Avant) before, unlike the previous RS 4 and RS2, which were available exclusively as Avants.

 Constructed from fully galvanised steelunibody, the B7 RS 4 uses aluminium for its front wings (fenders) and bonnet (hood). The saloon version features a drag coefficient (Cd) of 0.31,from a frontal area of 2.17 m2.

Audi RS4 AM02-0027 history

The new RS 4 Avant was unveiled at the 2017 Frankfurt Motor Show. Noticeable changes include a more angular exterior and newly designed wheels. The new RS 4 Avant is powered by a 2.9 TFSI V6 twin-turbo engine producing 450 PS (331 kW; 444 bhp) and 600 N⋅m (443 lbf⋅ft) of torque. This means that the new RS4 B9 produces the same power as the previous model (B8) while making more torque (extra 170 Nm) from a smaller displacement engine, resulting in better fuel efficiency and acceleration.

Unlike the B8 RS 4, which had a 7-speed dual-clutch S-Tronic transmission, the new RS 4 Avant is available with an 8-speed 'Tiptronic' automatic transmission.


Speed World Challenge

The B7 RS 4 was planned to replace the C5 RS6 in the Sports Car Club of America (SCCA) Speed World Challenge, but after Champion Racing had prepared the car, it was decided not to compete in the series, due to rule changes imposed by the SCCA on Audi concerning 4WD systems, wheel size, and engine power output. Rather than scrapping the fully built Speed World Challenge RS 4, Champion Racing and Audi used the car as a part of the American Le Mans Series Vitesse Program, which highlights the technology link between race cars and conventional series production road cars.

 Euro Superstars

Six RS 4s are openly campaigned in the Superstars Series by Audi Sport Italia. Audi RS 4 Quattro driver Gianni Morbidelli won the 2007 and 2008 championships.