Audi Sport Quattro S1, As per Art. 13 in × 3. The car featured an inline five-cylinder engine that displaced 2,110 cc (128. 8 cu in) and produced an officially quoted figure of 350 kW (480 PS; 470 bhp). Alongsde the Base Model, the most notable road going variant of the Quattro was the Sport Quattro, which saw two different versons (S1 & S1 E2), and was created in order to meet homologation rules for the Group B Rally Championship. The Sport Quattro and the extreme Sport Quattro S1 represented the final development of the 'urQuattro' and remain as the most powerful rally cars ever built. The car is a show racer built by Riku Tahko Rally Consulting for Secto Automotive Labs. . Oct 27, 2022 ยท The quattro S1 E2 car for Group B competition was based on the S1 but treated to significant aerodynamic body improvements, and to a significant boost in power. Two variants of the Sport Quattro were produced, the S1 and the S1 E2. t8ausb, ei3, 9gf, ef, xx, auywk6, oyjz7qp, ze, canwn, oyle,