One of the first specialist manufacturers to build a Group C racer was Peter Sauber. This Swiss engineer and motor racing enthusiast previously constructed mainly small-engined sports-prototypes, so Group C was quite a step forward. He had teamed up with engine specialist Heini Mader and together they created the Cosworth engined Sauber C6 in 1982. The car looked very purposeful, but the badly vibrating V8 engine proved to be a reliability nightmare. In the following seasons, the Swiss team had a little more success with the BMW engined C7, but they could not match the Works developed Porsches and Lancias. The C7′s biggest achievement was a ninth at Le Mans in 1983; preventing a complete Porsche top-ten.
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