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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.

Its great rival, the Audi Quattro, was actually a carry ... 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 ...

We love an underdog story, and we love to see the more "unconventional" come out on top against the most popular. No more can be said than when we see cars that you wouldn't expect to take on ...

If Audi Sport's early reputation ... its horizons. When the Group B rally formula was suddenly banned in 1986 after a spate of tragic accidents, the quattro S1 E2s fell silent for the last time ...