| 2003 | FIA European Touring Car Championship with Carly Motors |
| 2002 | 7th, FIA European Touring Car Championship with Carly Motors, best result 2nd, 1 pole position |
| 2001 | FIA GT Championship with Lister Racing - 2 wins at Monza and Magny-Cours; 5th in the Dutch Touring Car Championship with 3 wins |
| 2000 | 10th in FIA GT Championship, after 2 races with Carsport Holland (1 win, 1 second place). Le Mans with Racing for Holland. |
| 1999 | Champion, Japanese Formula Nippon, 2 wins. 5th, Japanese GT Series. Le Mans with Racing for Holland. |
| 1998 | 11th in Japanese Formula Nippon with Nakajima Reynard Mugen. 2nd, Japanese GT Series (Honda NSX). |
| 1997 | Japanese Formula 3 Champion with TOM'S Toyota, winning 6 of 7 races. Winner of the Zandvoort Masters. Leader F3 Monaco; Leader F3 Macau |
| 1996 | 2nd in Japanese Formula 3 with TOM'S, 1 win and 5 second places. |
| 1995 | 7th in German Formula 3 Championship, in a WTS Dallara Opel. |
| 1994 | 2nd, Euroseries Formula Opel, 2 wins, 8 pole positions. Wins the Nations Cup with Donny Crevels. Elected NAV driver of the year. |
| 1993 | Champion, Dutch Formula Ford 1800. 3 wins. 2nd in Benelux Formula Ford Championship, German Formula Ford Championship, 5 podiums, 9th in the Formula Ford Festival. |
| 1992 | Champion, Dutch Group N -2000cc, BMW 320i, Rijnhaave |
| 1991 | Champion, Dutch Citroen AX Cup, 4 wins; Champion, European Citroën AX Cup, Barcelona |
| 1990 | Winner of the Zandvoort Racing School. 6th in the Citroen AX Cup. |