Daniel Juncadella beat fellow DTM driver Pascal Wehrlein to win the Mercedes Stars & Cars event in Stuttgart, while F1 duo Lewis Hamilton and Nico Rosberg were ruled out of contention in the semi-finals.
In heats run on Mercedes-AMG GT S cars, Juncadella and Wehrlein defeated Rosberg and Hamilton respectively to emerge as the finalists of the 16-driver, Race of Champions-style knockout tournament.
Prior to Rosberg, Juncadella eliminated another DTM driver Lucas Auer, as well as a legend of the German series Bernd Schneider.
Meanwhile, Wehrlein knocked out Formula 1 Grand Prix winners Jean Alesi and David Coulthard before edging Hamilton by the narrowest of margins.
Among other participants were two-time F1 champion Mika Hakkinen, who lost out to Hamilton, and Michael Schumacher's son Mick, who was eliminated by Rosberg.
The final saw Juncadella defeat Wehrlein in two straight heats in the Mercedes-Benz SLS GT3.