In 1990 and 1991 Audi entered its flagship model, the V8 quattro, for the German Touring Car Championship. The 3.6-litre engine of this luxury saloon developed 340 kW (462 bhp). Despite the car’s basic weight of 1,220 kilograms, this was sufficient in conjunction with the car’s all-wheel drive to hold off less powerful but lighter rivals. Stuck took the championship title in the first of these two seasons; in 1991 the young Frank Biela pipped him to the post after a dramatic neck-and-neck finale on the Hockenheim Ring circuit. In 1992, when the season had already started, a dispute arose regarding the legality of the engine’s new crankshaft, whereupon the team withdrew the V8 quattro from the remaining races.