The third generation Audi S4 model debuted in mid-2003 and was available to the large public in three body styles - sedan/saloon, estate/wagon and cabriolet.
Based on A4’s brand new Volkswagen Group B6 platform, the S4 Avant benefited from the same wheelbase length as the S4 sedan and featured the same changes in terms of exterior design: wider grille, lower door trims and revised mirrors. This generation S4 Avant was fitted with a new 344-PS 4.2 L V8 engine (replacing the 2.7L unit from the 1997 S4) and came with a choice of two transmission: standard 6-speed manual and 5-speed tiptronic. This model was replaced by a B7 platform-based Audi S4 in 2005.