Note: The Audi A6 (Type 4A-C4) was manufactured in Europe from 1994-1997 and in China from 1998-2003.

History

The factory designation “4A – C4” for the fourth generation of this series was continued to be used on the Audi A6, as it is not considered as a new model, but a facelift of the Audi 100 C4. The basic technical layout is identical to the previous model. Like its predecessor models, the A6 C4 has the fully galvanized body introduced in 1985. It is equipped with four, five, six and eight-cylinder engines. The Quattro all-wheel drive system is also available as an option in selected engine and equipment variants.

The most noticeable change compared to its predecessor, the Audi 100 C4, besides the facelift, is the introduction of the most powerful diesel Audi engine for its time. It is an in-line five-cylinder with direct injection, distributor injection pump, turbocharging (bypass turbocharger), air mass meter, electronically controlled exhaust gas recirculation and exhaust gas cleaning using a catalytic converter. This unit has an output of 103 kW (140 PS) and is technically a modified version of the 84 kW engine from the Audi 100. This diesel engine allows Audi to exceeds the 200 km / h mark for the first time. This engine is available with an automatic transmission or, for the first time, a manual transmission with six gears on a diesel vehicle. This diesel engine was also available for the Quattro version.

Exterior

Exterior changes to the facelift model sold as the A6 compared to the Audi 100 are colour coded bumpers (without black plastic strips that appear attached), painted in the color of the vehicle. Side strips on the doors / fenders that are also in the same color as the exterior paintwork. They make a strong visual effect and give the vehicle a completely new, modern look. In addition, the front and rear have been revised and visually adapted to the new Audi line-up of A4 and A8 models, which were also introduced in 1994. The right wing mirror is now slightly smaller than the left, this reduces the frontal area (and indirectly the drag coefficient). In addition, many of the simpler model versions already have equipment details that were previously only offered in the higher versions of the Audi 100. As with the A4 and A8, the odometer and trip meter are now made using LCD technology. A higher quality version of the plastic surfaces of the interior creates a higher quality feel. The seats appear higher and slightly lower than on the Audi 100. The frame construction of the headrests, which Audi introduced in 1980 with the Audi 200 C2 model, has been abandoned and replaced by a new, more modern design. The headlights are now exclusively equipped with headlight lens for the low beam and fog lights. There is also a move away from the two-thread halogen technology by introducing a Xenon discharge lamp for low beam, available in some selected models with smaller engines. Driver and passenger airbags are also introduced.

In the Audi A6 / S6, a very precise product cycle control was implemented for the first time via the defined corrosion of individual body parts. Based on this, Audi was able to offer a twelve-year warranty against rust perforation.

In the People’s Republic of China, FAW-Volkswagen produced the Audi A6 C4 from 1998 to 2003 as the successor to the Audi 200 Lang.

Audi S6

The sports version of the Audi 100 C4 was called S4 until 1994. After the Audi 100 C4 was facelifted and renamed to A6 in favor of the new line-up, the name of the sports version also changed from S4 to S6. The offered engines for the Audi S6 were:

  • 2.2-liter turbo engine and electronically controlled boost pressure increase, the so-called “overboost”, plus 5- or 6-speed gear or 4-speed automatic transmission.
  • 4.2 liter engine, optionally with 6-speed manual gearbox or 4-speed automatic with torque converter lockup and dynamic shift program “DSP”

The Audi S6 Plus (recognizable by the blue bar in the Audi Sport emblem at the time) came onto the market in 1996. It was not a special model of the S6, but the first independent vehicle from Quattro GmbH, which, as a subsidiary of Audi AG, that modifies Audi vehicles. The S6 Plus had a more powerful V8 engine with 240 kW (326 hp) and a 6-speed manual transmission. It had additional equipment and was offered as a sedan and Avant (station wagon).

The number of Audi S6 Plus vehicles that were built was only 97 sedans and 855 Avant until 1997.

Audi S6 Review

TECHNICAL DATA

PETROL ENGINES

DIESEL ENGINES

Model Engine code Valves Engine displacement Power Torque Date
Inline 4 cylinder engine
1.8 ADR 20 1781 cm³ 92 kW (125 PS) / 5800 168 Nm / 3500 10.1995 – 10.1997
2.0 AAE 8 1984 cm³ 74 kW (101 PS) / 5500 157 Nm / 2750 06.1994 – 06.1996
2.0E ABK 8 1984 cm³ 85 kW (115 PS) / 5400 168 Nm / 3200 06.1994 – 06.1996
2.0E ACE 16 1984 cm³ 103 kW (140 PS) / 5900 185 Nm / 4500 06.1994 – 10.1997
Inline 5 cylinder engine
S6 2.2 AAN 20 2226 cm³ 169 kW (230 PS) / 5900 350 Nm / 1950 06.1994 – 07.1997
2.3 AAR 10 2309 cm³ 98 kW (133 PS) / 5500 186 Nm / 4000 06.1994 – 06.1996
V6 engines
2.6 ABC 12 2598 cm³ 110 kW (150 PS) / 5500 225 Nm / 3500 06.1994 – 10.1997
2.8 AAH 12 2771 cm³ 128 kW (174 PS) / 5500 245 Nm / 3000 06.1994 – 10.1997
2.8 ACK 30 2771 cm³ 142 kW (193 PS) / 6000 280 Nm / 3200 10.1995 – 10.1997
V8 engines
S6 4.2 AEC 32 4172 cm³ 213 kW (290 PS) / 5800 400 Nm / 4000 09.1994 – 10.1997
S6 Plus AHK 32 4172 cm³ 240 kW (326 PS) / 6500 400 Nm / 3500 03.1996 – 10.1997
Model Engine codes Valves Engine displacement Power Torque Date
Inline 4 cylinder engine
1.9 TDI (VEP) 1Z 8 1896 cm³ 66 kW (90 PS) / 4000 202 Nm / 1900 07.1994 – 06.1996
1.9 TDI (VEP) AHU 8 1896 cm³ 66 kW (90 PS) / 4000 202 Nm / 1900 07.1996 – 10.1997
Inline 5 cylinder engine
2.5 TDI (VEP) AAT 10 2461 cm³ 85 kW (115 PS) / 4000 265 Nm / 1900 06.1994 – 10.1997
2.5 TDI (VEP) AEL 10 2461 cm³ 103 kW (140 PS) / 4000 290 Nm / 1900 10.1994 – 10.1997