Cool Audi S5 wallpapers for your PC. Get this hot car on your desktop with some custom Audi S5 wallpapers. The Audi S5 is the new star of the A5 line and is priced about 50,000 USD. The old Audi Quattro had poor horsepower but this model does not. This car has about 350 horsepower which kills the competition such as BMW. Grab these cool Audi S5 wallpapers made by skinz.org