It is the sport version of Audi A6 that was introduced in 1994 and had four different generations, C7 being the current one. S6 is available either in saloon or station wagon (Avant) body style. First and second generations was available either with automatic or manual transmission, but third and fourth generations only offered with automatic transmission. In some markets, where Audi RS6 is not available, the Audi S6 is the top tier and highest performing version in Audi A6 family. Compared to a regular A6, the S6 featured more powerful powertrains and different exterior and interior designs.