1991: Title defended
Champion: Frank Biela
1991 saw Audi as the first manufacturer in history to successfully defend a DTM title. This time the winner was Frank Biela, who in 1991 completed his first of – by now – 18 years with Audi. Mercedes’ hopes of winning their first championship with Klaus Ludwig remained intact up to the last race at Hockenheim, but rainy weather at the finale made the Audi four-by-four unbeatable.