After completely revolutionising the rally scene in the early 80’s with its pioneering full time four-wheel-drive system, the first of its kind used in rallying, Audi devised an evolution of the A1 and A2 Quattro’s, the 500hp, 1000kg Sport Quattro S1 built solely to dominate Group B. Although failing to live up to the success of the former Quattro rally cars, the S1 is still considered by many as the car which defined Group B. As per usual for Group B, 200 road legal versions were required, leading to Audi producing a very special road car, the Sport Quattro.
In contrast to other Group B homologations, the Sport Quattro wasn’t simply a sparse road legal race car with a numberplate, but a supremely capable rally bred saloon. Powered by a turbocharged 2.1-litre inline-5, the same engine as the S1, the Sport Quattro produced 306hp, which harnessed by the Quattro four-wheel-drive let the car surge from 0-60 in less than 5 seconds; a major achievement for an 80’s saloon car. The Sport Quattro maintained a curb weight of just 1300kg’s thanks to a lightweight carbon-kevlar body. The fascinating thing about the Sport Quattro is that Audi created such a fast, volatile car that was still so usable. Fitted with electric windows and heated seats, the refined, practical Sport Quattro was a far cry from the strictly functional road going Peugeot 205 Turbo 16’s and MG Metro 6R4’s.