Diesel's low-rev response, some fussy facelift styling details Understated almost to the point of anonymity, the S4 is the mid-level performance version of the Audi A4 saloon that’s seen more ...

Audi infamously stuck fully blocked plastic pipes (all four of them) on the diesel-powered S4, S6, and SQ5, with the real exhaust tips hidden under the rear bumper. Thankfully, this isn’t the ...

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Combine a powerful 252-horsepower engine with Audi's excellent quattro all-wheel-drive system, and the A4 makes strong competition to BMW's 3-Series and Mercedes' C-Class a serious run for the money, ...

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 ...