History and trivia
The Audi Sport Quattro S1 arrived in 1985 as the ultimate evolution of the Quattro within Group B rallying, the most extreme category motorsport has ever seen. It used a shortened wheelbase compared with the original Quattro for sharper agility, and packed a turbocharged five-cylinder engine that in its most powerful form comfortably exceeded 500 hp, paired with the permanent all-wheel drive Audi had introduced in competition just a few years earlier. Drivers such as Walter Röhrl and Michèle Mouton took it to victory on some of the toughest rounds of the World Rally Championship.
The S1 became famous for its enormous power, its trademark turbo lag followed by brutal acceleration, and the roar of its five-cylinder engine, which became one of the most recognizable soundtracks of 1980s rallying. In 1987, Walter Röhrl drove a version of the S1 to the top of the Pikes Peak hill climb, setting a new record that stuck in the memory of fans everywhere. Group B's abrupt end that same year, prompted by its sheer danger, turned the Quattro S1 into the symbol of an unrepeatable era of motorsport.