2008
| | American Le Mans Series LMP1 | | Position: 2 (135 points) | 9 races. 1 win. 1 pole position. 9 podiums. 0 fastest laps.
| | Team: Audi Sport North America | | Car: Audi R10 TDI |
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2007
| | American Le Mans Series LMP1 | | Position: 3 (175 points) | 10 races. 3 wins. 1 pole position. 9 podiums. 1 fastest lap.
| | Team: Audi Sport North America | | Car: Audi R10 TDI |
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2006
| | American Le Mans Series LMP1 | | Position: 4 (99 points) | 6 races. 2 wins. 0 pole positions. 4 podiums. ? fastest laps. | | Team: Champion Racing | | Car: Audi R10 TDI | | Complete results needed. |
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2005
| | American Le Mans Series LMP1 | | Position: 1 (182 points) | 10 races. 4 wins. 0 pole positions. 10 podiums. ? fastest laps. | | Team: Champion Racing | | Car: Audi R8 | | Complete results needed. |
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2004
| | DTM | | Position: 11 (11 points) | 11 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Audi Sport Infineon Team Joest | | Car: Audi A4 |
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| | | American Le Mans Series LMP1 | | Position: 13 (22 points) | 1 race. 0 wins. 0 pole positions. 1 podium. ? fastest laps. | | Team: Champion Racing | | Car: Audi R8 | | Complete results needed. |
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2003
| | American Le Mans Series LMP900 | | Position: 18 (22 points) | 1 race. 0 wins. 0 pole positions. 1 podium. ? fastest laps. | | Team: Champion Racing | | Car: Audi R8 | | Complete results needed. |
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2002
| | American Le Mans Series LMP900 | | Position: 4 (206 points) | 10 races. 3 wins. 2 pole positions. 6 podiums. ? fastest laps. | | Team: Audi Sport Italia | | Car: Audi R8 | | Complete results needed. |
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2001
| | American Le Mans Series LMP900 | | Position: 1 (196 points) | 8 races. 3 wins. 1 pole position. 7 podiums. ? fastest laps. | | Team: Audi Sport North America | | Car: Audi R8 | | Complete results needed. |
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2000
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1999
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1998
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1997
| | German Supertouring Championship | | Position: 6 (357 points) | 20 races. 1 win. 0 pole positions. 2 podiums. 0 fastest laps.
| | Team: AZK Roc Auto | | Car: Audi A4 Quattro | | Car: Audi A4 |
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1996
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1995
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| | | German Supertouring Championship | | Position: 16 (105 points) | 4 races. 2 wins. 1 pole position. 2 podiums. ? fastest laps. | | Team: Audi Sport Italia | | Car: Audi A4 | | Complete results needed. |
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| | | FIA Touring Car World Cup | | Position: 2 (54 points) | 2 races. 1 win. 2 pole positions. 1 podium. 1 fastest lap.
| | Team: Audi Sport Italia | | Car: Audi A4 |
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1994
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| | | German Supertouring Championship | | Position: 3 (87 points) | 8 races. 0 wins. 3 pole positions. 5 podiums. ? fastest laps. | | Team: Audi Sport Italia | | Car: Audi 80 Quattro | | Complete results needed. |
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| | | FIA Touring Car World Cup | | Position: no position | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Audi Sport Italia | | Car: Audi 80 Quattro |
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1993
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1992
| | DTM | | Position: 12 (85 points) | 24 races. 0 wins. 0 pole positions. 4 podiums. 1 fastest lap.
| | Car: BMW M3 Sport Evolution |
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1991
| | Formula 1 | | Position: 18 (1 points) | 13 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Scuderia Italia SpA | | Car: Dallara BMS-191 (Judd) |
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| | | Formula 3000 Japan | | Position: no position | 0 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Team Hayashi |
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1990
| | Formula 1 | | Position: no position | 14 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Scuderia Italia | | Car: Dallara BMS-190 (Ford) |
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| | | DTM | | Position: 15 (36 points) | 4 races. 1 win. 0 pole positions. 2 podiums. 2 fastest laps.
| | Car: BMW M3 Sport Evolution |
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1989
| | Formula 1 | | Position: 23 (2 points) | 10 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Audi Sport Italia | | Car: Benetton B188, B189 - Ford |
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| | | Formula 3000 Japan | | Position: 6 (11 points) | 4 races. 1 win. 0 pole positions. 1 podium. 0 fastest laps.
| | Team: Audi Sport Italia | | Car: Reynard 89D (Mugen) |
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1988
| | Formula 3000 Japan | | Position: 3 (25 points) | 8 races. 0 wins. 0 pole positions. 3 podiums. 0 fastest laps.
| | Team: Middle-Bridge Team Le Mans | | Car: Reynard 88D (Mugen Tomei) |
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1987
| | World Touring Car Championship | | Position: 4 (244 points) | 11 races. 1 win. 1 pole position. 6 podiums. ? fastest laps. | | Team: Schnitzer | | Car: BMW M3 | | Complete results needed. |
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| | | Formula 3 Macau GP | |
| Race position: no position. | | Team: Eddie Jordan Racing | | Car: Reynard 873 (Volkswagen) |
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1986
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1985
| | Formula 3000 International | | Position: 3 (38 points) | 11 races. 2 wins. 1 pole position. 4 podiums. 1 fastest lap.
| | Team: Audi Sport Italia |
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1984
| | Formula 2 Europe | | Position: 6 (18 points) | 10 races. 0 wins. 0 pole positions. 1 podium. 0 fastest laps.
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1983
| | Formula 3 Europe | | Position: 3 (52 points) | 15 races. 2 wins. 2 pole positions. 8 podiums. 0 fastest laps.
| | Car: Ralt RT3 (Alfa Romeo) |
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1982
| | Formula 3 Europe | | Position: 2 (62 points) | 14 races. 3 wins. 3 pole positions. 7 podiums. 3 fastest laps.
| | Team: Euroracing | | Car: Euroracing 101 (Alfa Romeo) |
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1981
| | Formula 3 Europe | | Position: 6 (19 points) | 15 races. 1 win. 2 pole positions. 2 podiums. 0 fastest laps.
| | Car: Martini MK34 (Toyota) |
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| | | Formula 3 Italy | | Position: 9 (15 points) | ? races. 1 win. ? pole positions. 2 podiums. ? fastest laps. | | Car: Martini MK34 (Toyota) | | Complete results needed. |
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