At the height of the Group B rallying formula, things started to get out of hand, with spiraling horsepower figures and ...

But nothing pushed this adrenaline-pumping insanity as much as Group B, so let's take a look at the best car to ever come out of that lawless class. I am, of course, talking about the Audi Quattro ...

Audi has made some of the best rally cars around, with its Group B cars arguably being its most recognizable models. The German automaker also participated in IMSA with the 1989 Audi 90 quattro ...