Sauber C4

The Sauber C4 was the fourth sports prototype racing car that Swiss Peter Sauber designed and developed. It was built in 1975. It competed in the European 2-Litre Sportscar Championship, where it managed to score 1 win and 5 podium finishes. It was powered by the same naturally aspirated 2.0 L Ford-Cosworth BDG four-cylinder engine as its predecessor, developing 275 hp.