The 2008 Audi S4 is a 2- or 4-door, up to 5-passenger convertible sports car, luxury sports sedan, or luxury wagon, available in 6 trims, ranging from the Sport Sedan to the Cabriolet with Tiptronic. Upon introduction, the Sport Sedan is equipped with a standard 4.2-liter, V8, 340-horsepower engine that achieves 13-mpg in the city and 20-mpg on the highway. A 6-speed manual transmission with overdrive is standard. The Cabriolet with Tiptronic is equipped with a standard 4.2-liter, V8, 340-horsepower engine that achieves 14-mpg in the city and 21-mpg on the highway. A 6-speed automatic transmission with overdrive is standard.
