The Audi S6 was the high performance variant for the A6. The first generation of S6 was based on the C4 Audi A6, and was available as a sedan or 'Avant' station wagon. The S6 (C4) was fitted with a turbocharged 2.2L inline five engine, but for European models, a 4.2L V8 engine was also available. Production of the S6 (C4) ended in 1997.