2008
| | Super GT Japan GT500 | | Position: 8 (49 points) | 9 races. 0 wins. 0 pole positions. 3 podiums. 1 fastest lap.
| | Team: Autobacs Racing Team Aguri | | Car: Honda NSX C32B |
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2007-08
| | A1GP | | Position: 6 (94 points) | 2 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Team Ireland |
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2007
| | Super GT Japan GT500 | | Position: 1 (94 points) | 9 races. 3 wins. 0 pole positions. 4 podiums. 2 fastest laps.
| | Team: Autobacs Racing Team Aguri | | Car: Honda NSX |
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2005-06
| | A1GP | | Position: 8 (68 points) | 16 races. 0 wins. 0 pole positions. 1 podium. 3 fastest laps.
| | Team: Team Ireland |
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2006
| | Super GT Japan GT500 | | Position: 7 (68 points) | 9 races. 1 win. 2 pole positions. 2 podiums. ? fastest laps. | | Team: ARTA | | Car: Honda NSX | | Complete results needed. |
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2005
| | Super GT Japan GT500 | | Position: 3 (61 points) | 8 races. 1 win. 3 pole positions. 2 podiums. ? fastest laps. | | Team: ARTA | | Car: Honda NSX | | Complete results needed. |
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2004
| | World Series by Nissan | | Position: no position | 3 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Gabord Competicion | | Car: Dallara SN01 - Nissan |
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| | | Le Mans 24h - LMP1 class | |
| Race position: no position. | | Team: Racing for Holland | | Car: Dome S101 - Judd | | Complete results needed. |
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2003
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2002
| | Formula Nippon | | Position: 1 (62 points) | 10 races. 4 wins. 2 pole positions. 8 podiums. 1 fastest lap.
| | Team: Nakajima Racing | | Car: Reynard 01L (Mugen Honda) |
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| | | All-Japan GT Championship | | Position: 3 (74 points) | 8 races. 3 wins. 3 pole positions. 3 podiums. ? fastest laps. | | Team: Nakajima Racing | | Car: Honda NSX | | Complete results needed. |
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2001
| | Formula Nippon | | Position: 4 (29 points) | 10 races. 2 wins. 1 pole position. 3 podiums. 1 fastest lap.
| | Team: Nakajima Racing |
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2000
| | Formula Nippon | | Position: 9 (9 points) | 10 races. 0 wins. 1 pole position. 1 podium. 0 fastest laps.
| | Team: Team Morinaga Nova |
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| | | 1000 km Suzuka - GT500 | |
| Race position: no position. | | Team: Toyota Team SARD | | Car: Toyota Supra | | Complete results needed. |
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1999
| | Formula Nippon | | Position: 4 (21 points) | 10 races. 1 win. 1 pole position. 3 podiums. 2 fastest laps.
| | Team: Shionogi Team Nova |
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1998
| | Formula Nippon | | Position: 7 (13 points) | 9 races. 0 wins. 1 pole position. 2 podiums. 0 fastest laps.
| | Team: Shionogi Team Nova |
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1997
| | Formula Nippon | | Position: 8 (12 points) | 10 races. 0 wins. 0 pole positions. 1 podium. 0 fastest laps.
| | Team: Team TMS |
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| | | All-Japan GT Championship | | Position: 25 (4 points) | ? races. ? wins. ? pole positions. ? podiums. ? fastest laps. | | Complete results needed. |
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1996
| | Formula 3 Britain | | Position: 1 (188 points) | 15 races. 3 wins. 4 pole positions. 8 podiums. ? fastest laps. | | Team: Paul Stewart Racing | | Car: Dallara F396 (Honda Mugen) | | Complete results needed. |
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| | | Formula 3 Macau GP | |
| Race position: 1. | | Team: Paul Stewart Racing | | Car: Dallara 395 (Mugen Honda) | | Complete results needed. |
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1995
| | Formula 3 Britain | | Position: 2 (176 points) | 18 races. 6 wins. 9 pole positions. 9 podiums. ? fastest laps. | | Team: Paul Stewart Racing | | Car: Dallara F395 (Honda Mugen) | | Complete results needed. |
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| | | Formula 3 Macau GP | |
| Race position: no position. | | Team: San Miguel PSR | | Car: Dallara F395 (Mugen-Honda) | | Complete results needed. |
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1994
| | Formula Vauxhall Lotus | | Position: 4 (149 points) | 13 races. 5 wins. 4 pole positions. 8 podiums. ? fastest laps. | | Team: Paul Stewart Racing | | Complete results needed. |
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1993
| | Formula Vauxhall Junior | | Position: 1 (146 points) | 14 races. 8 wins. 4 pole positions. 9 podiums. ? fastest laps. | | Car: Orion-NES FR91 | | Complete results needed. |
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