D1
Audi V8 quattro DTM (1990)
Having had quattro deemed an "unfair advantage" and thus outlawed in Trans-Am in 1988 and IMSA GTO racing in 1989 for its on-track dominance, Audi Sport turned to the German DTM series.
Audi V8 Avant 3.6 prototype (1989)
Built at the insistence of Ferdinand Piëch as a fully functional, road-approved family car for his wife Ursula Piëch, it remains one of the most unusual and storied vehicles ever produced by the brand.