Dumbreck began his motorsport career in karting in 1986 . In 1993 he switched to the British Formula First Championship, where he was second overall. In the following years he drove in the British Formula Vauxhall Championship, whose overall classification he won in 1996. After years in Formula 3 , Dumbreck joined the DTM in 2000 as a works driver from Mercedes . However, he never made his big breakthrough. In his third season he had his first and only victory. After moving to Opel in 2003, he was by far the most successful driver of his brand in the first season (among other things, he scored more than half of all points for Opel). As a result of the manufacturer's crisis, however, this still only meant seventh place overall without any chance to intervene decisively in the championship. In 2004 he was unable to build on these successes and, like all his colleagues in the brand, mostly stayed above the points. The low point was a serious accident at Zandvoort , in which he was miraculously uninjured. After the end of the 2004 DTM season, Dumbreck entered the Japanese GT series, where he has been driving for various teams since 2005.
The accident at Le Mans
Peter Dumbreck became famous with his spectacular accident at Le Mans in 1999 . The racing driver, who was only successful in Great Britain at that time, was a member of the Mercedes-Benz works team for this long-distance classic when his Mercedes-Benz CLR fell under the air on the section between the Mulsanne and Indianapolis bends and took off just after dark. The car turned several times in the air on its own axis and hit the adjacent forest. Miraculously, Dumbreck was unharmed except for bruises.