|The 2008 S5 is a 2-door, 5-passenger sports coupe, available in one trim only, the Quattro.
Upon introduction, the S5 is equipped with a standard 4.2-liter, V8, 354-horsepower engine that achieves 14-mpg in the city and 21-mpg on the highway. A 6-speed manual transmission with overdrive is standard, and a 6-speed automatic transmission with overdrive is optional.
The 2008 S5 is the company's first foray into the compact sport coupe segment since it stopped selling the legendary Quattro nearly two decades ago. Since then Audi has been taking on BMW's vaunted M3 with a lineup of sedans, wagons and even convertibles, avoiding a direct confrontation with the two-door king of the hill.