| 1983 - 1984 : 1st, Irish Formula Ford
Champion |
| 1985 : British Formula Ford Championship |
| 1986 : 1st, British Formula Ford
Championship |
| 1988 : 5th, British Formula 3 Championship |
| 1989 : Formula 3000 Championship |
| 1990 : Formula 3000 Championship |
| 1991 : Japanese Formula 3000 Championship |
| 1992 : Japanese Formula 3000 Championship |
| 1993 : Formula 1 debut with Jordan-Hart
(2 Grands Prix). 20th, Formula 1 World Championship (1 point). Japanese Formula 3000
Championship |
| 1994 : 16th, Formula 1 World Championship
with Jordan-Hart (6 points) |
| 1995 : 12th, Formula 1 World Championship
with Jordan-Peugeot (10 points) |
| 1996 : 10th, Formula 1 World Championship
with Ferrari (11 points) |
| 1997: 7th in the F1 World Championship with
Ferrari (24 points. Second at Buenos Aires. Third at Imola, Monaco, Magny-Cours and
Suzuka. Fifth at Jerez) |