Bulgarian tuner Prospeed has built a replica of Audi's fabled S1 World Rally Championship mauler ... Helping in its bid for authenticity is genuine Group B horsepower: 800 ponies, to be exact.

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Every gearhead should know about the Audi Sport Quattro S1. It was a Group B World Rally Championship legend back in the early '80s, along with other incredible competitors like the Ford RS200 ...

will see Group B legends, such as the Peugeot 205 T16, Audi S1 quattro, Metro 6R4 and Ford RS200 take part in a competitive rally - an extremely rare occurrence since the hugely expensive and ...

Over at Ford Motorsport, chief rally engineer John Wheeler ... it’s raw power that defines the Group B era. By 1986 there was a 500 club: the E2 S1 Quattro with at least 550bhp, maybe more ...

The Group B era of rallying was a high point for the sport. Iconic vehicles such as the Audi Quattro, Lancia 037, Ford RS200, and others were high-powered, fire-breathing machines purpose-built ...

The 340-horsepower Audi Quattro A1 ... take on the mighty S1. Only one Nissan Skyline R31 V6 Turbo 4WD was ever made. It competed in one season of the South African rally championship before ...