This 2005 Audi S4 Avant Quattro spins all four of its wheels. That's important since, from the factory, it was given 339 horsepower and 302 lb-ft of torque to play with. That's made possible by the ...

The Audi S4 is the automaker's original compact sports sedan, priced above the Audi S3 sedan and below the Audi S6, S7, and S8 sedans in the automaker's S series of sporty four-door models.

The estate version of the newly freshened Audi S4, driven here in the UK for the first time. Power comes from the supercharged 3-litre V6 that knocks out 328bhp and delivers a claimed 0-62mph time ...