Experience the aggressive exhaust sound of the Audi S5 as it revs, launches, and accelerates with full throttle. This video ...

Watch Audi’s performance sedan and supercar go head-to-head as the twin-turbo V8 RS7 takes on the naturally aspirated V10 R8 ...

The S4 gets special rims, has quad exhaust tips ... including the inclusion of HD radio with the navigation system and the addition of Audi's side assist (stand-alone option with Prestige model).

The S4's styling is relatively subdued compared to other sporty compact luxury sedans, but it delivers performance to back up those telltale quad exhaust ... of Audi's Quattro AWD system.