 | 1980 - 1985 : Karting |
 | 1986 - 1987 : Formula Ford |
 | 1988 : 1st, German Formula Lotus-Opel
Championship |
 | 1989 : 2nd, German Formula 3 Championship |
 | 1990 : 16th, Formula 3000 Championship |
 | 1991 : 14th, Formula 3000 Championship |
 | 1992 : Formula 3000 Championship |
 | 1993 : Japanese Sportscar Championship |
 | 1994 : Formula 1 debut. 13th, Formula 1
World Championship with Sauber-Mercedes (7 points) |
 | 1995 : 9th, Formula 1 World Championship
with Sauber-Ford (15 points) |
 | 1996 : 12th, Formula 1 World Championship
with Sauber-Ford (7 points) |
 | 1997 : 2nd in the F1 World Championship
with Williams-Renault (42 points. Winner at Imola. Second at Magny-Cours and at Suzuka.
Third at Spa, Monza, Zeltweg, N�rburgring. Fourth at Montreal. Sixth at Jerez) |