Strange how you almost never think about the most successful Group B car there was.
Group B cars are usually the first things to be discussed when talking about awesome cars from the Eighties, but the single most successful Group B car there was is not one of the most iconic. This is probably because the Peugeot 205 T16 was based on a generally fairly boring road car, while cars like the Audi Sport Quattro and the Porsche 959 were built to be race cars first. Road cars were then built out of them as an afterthought.
The following video shows the little hottest of hatches in action. Hard to believe the hottest street version had only 129 horsepower.