Audi RS6 Quattro

Production	July 2002–September 2004
Body style	5-door Avant (estate/wagon), 4-door saloon/sedan
Platform	Volkswagen Group C5
Engine	4.2 L V8 40v 2xDOHC 'biturbo' (BCY/BRV)
Transmission	5-speed ZF 5HP24A tiptronic automatic
Wheelbase	2,759 mm (108.6 in)
Length	4,852 mm (191.0 in)
Width	1,850 mm (72.8 in)
Height	saloon: 1,387–1,426 mm (54.6–56.1 in), Avant: 1,390–1,430 mm (54.7–56.3 in)
Kerb weight	saloon: 1,840 kg (4,057 lb), Avant: 1,865 kg (4,112 lb)

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. Furthermore, their internal combustion engines are all front-mounted, are longitudinally oriented, and are not shared with any other vehicle. The transmission is mounted immediately at the rear of the engine in a longitudinal orientation, in the form of a transaxle.