The 2006 Audi S4 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2006 S4 is $9,371 ...

Our test car was not the dark gray, black interior ... five-spoke wheels that look straight off a previous-generation Audi S4. If you want a luxury car that blends in, this version of the A4 ...

A powerful 252-horsepower engine combined with Audi's excellent quattro all-wheel-drive system, and the A4 gives BMW's 3-Series and Mercedes' C-Class a serious run for the money, while its sporty ...

The Audi A4 and S4 are a compact luxury sedan. They aim to bring a high quality all-around driving experience to buyers looking for a bit of practicality and luxury in the mid $30,000 range. With more ...