The first season was in 2010, having replaced the previous ADAC Volkswagen Polo Cup which had run since 2004.
It was a support series for the Deutsche Tourenwagen Masters, and was replaced in 2015 by the Audi Sport TT Cup.
As well as 2005 champion René Rast, a number of well-established drivers have passed through this series.
These include World Touring Car Championship drivers Jaap van Lagen, Marin Colak and Jason Watt, ex-Champ Car driver Jan Heylen, 1986 Deutsche Tourenwagen Meisterschaft champion Kurt Thiim and 2009 Dakar Rally winner Giniel de Villiers.
So far, ex-Formula One regulars Martin Brundle and Jacques Laffite, the 1990 and 1992 World Rally Champion Carlos Sainz and five-time 24 Hours of Le Mans winner Frank Biela have all made appearances.