Only diehard Audi fans know about the Quattro RS001, a mid-engine prototype rally car that was built in secret and destroyed by then-Audi boss Ferdinand Piech. Only one was made, and a mid-engine ...

Audi’s stillborn Group S rally car had its engine in the middle, and there’s just one left today. At the height of the Group B rallying formula, things started to get out of hand, with spiraling ...

Audi's legendary Sport Quattro S1 was a powerhouse of international rally in the Group B era of the 1980s, but due to its short wheelbase it was always a bit difficult to drive and resulted in lots of ...

Audi’s relationship with unconventional powertrains didn’t start with rally dominance—it began quietly in 1978 with a humble two-liter diesel making just 70 horsepower. A year later, everything ...

Can you name a more iconic rally-bred vehicle of the 1980s than the Audi Quattro? Well, the Lancia Delta Integrale, for one, and as it happens, this timeless classic from the four-ring brand was ...

Two of the most accomplished Audi race cars are now up for grabs—and the marque will even provide trackside support for the buyers. It’s the first time the car maker has sold prototypes from its ...

There's no way that a 4,500 pound long-wheelbase diesel-powered luxury sedan from a decade ago could be any good at rallying, right? It'd be too big and heavy, plodding around the rally stage like a ...