Driver Bio
| Nationality | Japanese |
| Birthplace | Okazaki, Japan |
| Born | 23 February 1953 |
| First Grand Prix | 1987 Brazilian Grand Prix |
| Last Grand Prix | 1991 Australian Grand Prix |
| Years Active | 1987–1991 |
| Current/Last Team | Tyrrell |
Grand Prix Stats
| Race Entries | 80 |
| Race Starts | 74 |
| Did Not Start | 1 |
| Best Race Start | 6th ( |
| Best Race Finish | 4th ( |
| Retirements | 37 |
| First-Lap Retirements | 3 |
| Not Classified | 2 |
| Disqualified | 0 |
| Did Not Qualify | 5 |
Qualifying
| Qualifying Sessions | 80 |
| Reached Q3 | 0 |
| Q2 Eliminations | 0 |
| Q1 Eliminations | 0 |
| Did Not Qualify | 5 |
Fastest Laps
| Fastest Laps | 1 |
| First Fastest Lap | 1989 Australian Grand Prix |
| Last Fastest Lap | 1989 Australian Grand Prix |
| Win + Fastest Lap | 0 |
| Most Consecutive Fastest Laps | 0 |
| Most Fastest Laps in a Season | 1 |
| Seasons with Fastest Laps | 1 |
Points
| Points Scored | 16 |
| Points Finishes | 10 |
| Most Points in a Single Season | 7 (1987) |
| Seasons with Points | 5 |
Stats by Season
| Year | Constructor | Entries | Starts | Wins | Podiums | Poles | Fastest Laps | Front Rows | DNF | Best Start | Best Result | Pts Finishes | Points | Championship |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1987 | Lotus | 16 | 16 | 0 | 0 | 0 | 0 | 0 | 5 | 11 | 4 | 4 | 7 | 11th |
| 1988 | Lotus | 16 | 14 | 0 | 0 | 0 | 0 | 0 | 6 | 6 | 6 | 1 | 1 | 16th |
| 1989 | Lotus | 16 | 13 | 0 | 0 | 0 | 1 | 0 | 7 | 12 | 4 | 1 | 3 | 21st |
| 1990 | Tyrrell | 16 | 15 | 0 | 0 | 0 | 0 | 0 | 10 | 9 | 6 | 3 | 3 | 15th |
| 1991 | Tyrrell | 16 | 16 | 0 | 0 | 0 | 0 | 0 | 9 | 10 | 5 | 1 | 2 | 15th |
Stats by Constructor
| Constructor | Years | Entries | Starts | Wins | Podiums | Poles | Fastest Laps | Front Rows | DNF | Best Start | Best Result | Pts Finishes | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lotus | 1987–1989 | 48 | 43 | 0 | 0 | 0 | 1 | 0 | 18 | 6 | 4 | 6 | 11 |
| Tyrrell | 1990–1991 | 32 | 31 | 0 | 0 | 0 | 0 | 0 | 19 | 9 | 5 | 4 | 5 |
Teammates & Qualifying Head-to-Head
| Teammate | Years | Races | Qualifying H2H |
|---|---|---|---|
| Ayrton Senna | 1987 | 16 | 0-16 |
| Nelson Piquet | 1988, 1989 | 32 | 4-28 |
| Jean Alesi | 1990 | 16 | 0-16 |
| Stefano Modena | 1991 | 16 | 1-15 |
