Audi Sport Quattro S1

Audi Sport Quattro S1

The Audi Sport Quattro S1 represents the ultimate evolution of Audi's revolutionary Quattro and one of the most extreme homologation specials ever created. To meet Group B rally regulations requiring 200 production examples, Audi created this shortened, lightened, and more powerful version of the original Quattro. The wheelbase was reduced by 320mm, weight was slashed through extensive use of aluminum and composite materials, and the turbocharged inline-five was boosted to 306 horsepower in street form.

The Sport Quattro's 2.1-liter engine featured a larger KKK turbocharger, revised engine management, and strengthened internals. While the street version produced 306 hp, the competition S1 E2 rally cars generated over 500 horsepower, making them among the most powerful rally cars ever built. The short wheelbase and permanent all-wheel drive system created incredibly agile handling, though the car required significant skill to drive at the limit.

In rally competition, the Sport Quattro S1 achieved remarkable success despite fierce competition from Peugeot and Lancia. Drivers like Walter Röhrl, Hannu Mikkola, and Michele Mouton piloted these machines to numerous victories. The S1's most famous achievement was Walter Röhrl's record-shattering run at Pikes Peak in 1987, where he conquered the mountain in just 10 minutes and 47 seconds, a record that stood for years.

Only 214 examples were produced for homologation purposes, making the Sport Quattro S1 extraordinarily rare. Today, these cars are among the most valuable Audis ever made, with pristine examples commanding prices approaching $1 million. The combination of Group B rally pedigree, extreme performance, advanced technology, and extreme rarity makes the Sport Quattro S1 one of the ultimate 1980s collectibles and a cornerstone of any serious collection.