The Quattro Sport S1 (or E2) is an evolution of the Quattro Sport and stands out mainly by the numerous aerodynamic components, giving it a particularly ravaged look. Apart from one lone victory, its remains the symbolic model of Audi Rallye. With 550hp, it's also the most powerful car to have been entered in the World Rallye Championships. Presented here, in its nocturnal configuration from the 1986 Monte-Carlo Rallye equipped with six additional imposing headlights and specific asphalt rims.