Free vector image of a black Audi S5. Audi S5 is the high-performance edition of the executive Audi A5. The S in Audi S5 stands for sport. That means the car is equipped with Audi's quattro four-wheel drive system. Audi S5 is available as five-door fastback, cabriolet and coupé. Original wallpapers are © of respective artists.