1992
| | Formula 3000 Japan | | Position: 4 (26 points) | 6 races. 2 wins. 0 pole positions. 4 podiums. 0 fastest laps.
| | Team: Team Nova |
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| | | Sportscar World Championship | | Position: 22 (10 points) | 2 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Mazdaspeed | | Car: Mazda MXR-01 |
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| | | IMSA Camel GTP Championship | | Position: no position | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Nova Engineering | | Car: Nissan R91CP |
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1991
| | Formula 3000 Japan | | Position: 3 (25 points) | 9 races. 1 win. 0 pole positions. 5 podiums. 2 fastest laps.
| | Team: Team Nova |
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| | | Sportscar World Championship | | Position: 16 (20 points) | 1 race. 1 win. 0 pole positions. 1 podium. 0 fastest laps.
| | Team: Mazdaspeed | | Car: Mazda 787B |
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1990
| | Formula 3000 Japan | | Position: 6 (15 points) | 10 races. 1 win. 1 pole position. 2 podiums. 0 fastest laps.
| | Team: Team Take One |
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| | | World Sports-Prototype Championship | | Position: no position | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Swiss Team Salamin (Nova Engineering) | | Car: Porsche 962C |
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1989
| | DTM | | Position: 32 (16 points) | 13 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Ringshausen ABR Motorsport | | Car: Ford Sierra Cosworth |
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| | | Formula 1 | | Position: no position | 0 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Rial Racing | | Car: Rial ARC-02 (Ford) |
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1988
| | Formula 3000 International | | Position: 15 (5 points) | 8 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Onyx | | Car: March 88B (Cosworth) |
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| | | World Sports-Prototype Championship | | Position: 36 (22 points) | 4 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Porsche Kremer Racing | | Car: Porsche 962C | | Car: Porsche 962CK6 |
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1987
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| | | Supercup | | Position: 3 (28 points) | 5 races. 0 wins. 0 pole positions. 0 podiums. ? fastest laps. | | Team: Kremer Racing | | Car: Porsche 962C | | Complete results needed. |
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1986
| | DTM | | Position: 2 (113 points) | 7 races. 2 wins. 1 pole position. 5 podiums. 2 fastest laps.
| | Team: RSM Marko | | Car: Mercedes 190E 2.3-16 |
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| | | Formula 3000 International | | Position: no position | 5 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Bromley | | Car: Ralt RT20 (Judd) |
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| | | World Sports-Prototype Championship | | Position: 42 (11 points) | 3 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Cosmik Racing, Porsche Kremer Racing | | Car: March 84G (Porsche) | | Car: Porsche 962C |
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1985
| | Formula 3 Germany | | Position: 1 (195 points) | 13 races. 6 wins. 6 pole positions. 11 podiums. 4 fastest laps.
| | Team: Josef Kaufmann Racing | | Car: Martini MK45 (Volkswagen) |
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| | | FIA World Endurance Championship | | Position: 56 (6 points) | 2 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Fitzpatrick Racing, Joest Racing | | Car: Porsche 956 |
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1984
| | Formula 3 Germany | | Position: 2 (154 points) | 12 races. 3 wins. 5 pole positions. 9 podiums. 4 fastest laps.
| | Team: Volkswagen Motorsport | | Car: Ralt RT3 (Volkswagen) |
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| | | Formula 3 Britain | | Position: 16 (4 points) | 2 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Volkswagen Motorsport | | Car: Ralt RT3 (Volkswagen) |
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| | | Formula 3 Europe | | Position: no position | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Volkswagen Motorsport | | Car: Ralt RT3 (Volkswagen) |
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1983
| | Formula 3 Germany | | Position: 3 (72 points) | 8 races. 1 win. 2 pole positions. 4 podiums. 2 fastest laps.
| | Team: Walter Lechner Racing School | | Car: Ralt RT3 (Volkswagen) |
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| | | Formula 3 Europe | | Position: no position | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Walter Lechner RS | | Car: Ralt RT3 (Volkswagen) |
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1982
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| | | Formula Ford 1600 Germany | | Position: 1 | ? races. ? wins. ? pole positions. ? podiums. ? fastest laps. | | Team: ISA Racing | | Car: Van Diemen RF82 | | Complete results needed. |
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1981
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1980
| | Formula Ford 1600 Germany | | Position: 5 (70 points) | ? races. ? wins. ? pole positions. ? podiums. ? fastest laps. | | Complete results needed. |
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