Although the A4 is appreciably quick, there are some drivers for whom it's not enough—for them, Audi builds the S4. Over the decades, this sporty luxury compact sedan has become a performance icon, at ...

The new car is powered by a turbocharged 3.0-liter V-6 that makes 349 hp and 369 lb-ft of torque. Power is routed through a quick-shifting eight-speed automatic to all four wheels via Quattro ...

WE JUST GOT DONE TEARING around Italy’s northern Adriatic coast and the Autodromo Santa Monica near Misano in Audi’s latest bits of happy frustration, the new S4 sedan and wagon. Besides a few ...