Audi A6

The Audi A6 is an executive luxury car produced by Audi. It is available in two bodywork configurations, the sedan and the station wagon (Avant). The second generation A6 was also used as the basis for the Allroad. Its primary competitors are the Mercedes-Benz E-Class, BMW 5-Series, Alfa Romeo 166, Jaguar S-Type, Lexus GS and Volvo S80.

C4 1994-1997

In 1994 the last version (C4) of the Audi 100 was facelifted and re-badged as the A6, to fit in with Audi's new naming policy (as the A8 had just been introduced). The exterior was largely left unchanged from the C4 100 as well as the engines; up until 1997 the A6 came with several different engines, two of them Diesel, and most of them available with Audi's quattro four wheel drive system.

The C4 design was available with the following engines:

C5 1997-2004

In 1997 the scene changed strikingly for the A6. With the introduction of an ambitious new design (C5) and a new pack of engines, the A6 moved up a notch and was positioned alongside the hegemonious BMW 5-Series and the solid Mercedes E-class. The new A6 presented itself with a wide range of engines and configurations. The crisp 30-valve 2.4 and 2.8 V6 engines represented the bulk of the A6's development programme, but the resilient 2.5 V6 TDI and the powerful all-new Audi S6 were the flagships. As an alternative to the manual transmission, a 5-speed Tiptronic automatic transmission was also available. The Avant body arrived in 1998.

In 2000 the A6 received a facelift which saw little change in the design of the car but presented a few notable changes in terms of engines. The 1.8L engine was removed and replaced by a 2.0L powerplant with 130PS (96kW). The 1.9L TDI was tweaked into producing a maximum of 130PS (96kW) and 310Nm (228ft.lbf), receiving a 6-speed gearbox in the process. The 2.4's power was slightly upgraded and the 2.8 V6 was replaced by a 3.0L engine boosting 220PS (162kW). The turbocharged 2.7L was given a tweak on the turbo resulting in 250PS (184kW) and 330Nm (244ft.lbf), controlled by standard quattro. The V6 Diesel was also slightly modified resulting in 163PS (120kW) (after the second modification) and 350Nm (258ft.lbf). A new more powerful V6 diesel was also introduced presenting 180 bhp and 370 nm.