Audi returned to the DTM for 1991 with a slightly updated V8 quattro Evo. Hans Joachim Stuck would lead the squad with the #1 car, though a young upstart new to the Audi brand if not the series was Frank Biela.
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.
The 1987 Audi Sport quattro S1 E2 Pikes Peak represents the ultimate evolution of Audi's Group B rally technology and the final chapter in the marque's factory-backed domination of America's Mountain.
The 1986 Audi Sport quattro S1 E2 Pikes Peak occupies a unique place in Audi competition history. Driven by Bobby Unser to victory at the 1986 Pikes Peak International Hill Climb, it reclaimed the course record from Audi's own Michèle Mouton and delivered Unser's record-setting tenth overall victory on the mountain.