The SAT 1 Supercup '89 was the fourth and final season of the Supercup, a West German auto racing series organized by the ADAC and sponsored by SAT 1 television. Held over five events in West Germany and Great Britain, the driver's championship was won by Frenchmen Bob Wollek; his team Joest Racing won the team's championship. The series was canceled following the 1989 season, ending a yearly series of German sports car championships dating back to 1972.