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| Full name: | Sir John Young Stewart |
| Nationality: | British |
| Date of Birth: | Sunday, 11 June 1939 |
| Age: | 73 years, 344 days (11 months, 13 days) |
| Place of birth: | Milton, West Dunbartonshire, England |
| Debut: | 1965 South African Grand Prix |
| Active years: | 1965 – 1973 (9) |
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| Rd | Date | Grand Prix | Constructor | Car | Grid | Race | Points | Champ. Points | Rank |
| 1 | 7 Mar | South Africa | March-Ford Cosworth | 701 | 1 | 3 | 4 | 4 | 3 |
| 2 | 19 Apr | Spain | March-Ford Cosworth | 701 | 3 | 1 | 9 | 13 | 1 |
| 3 | 10 May | Monaco | March-Ford Cosworth | 701 | 1 | Ret | 0 | 13 | 2 |
| 4 | 7 Jun | Belgium | March-Ford Cosworth | 701 | 1 | Ret | 0 | 13 | 2 |
| 5 | 21 Jun | Netherlands | March-Ford Cosworth | 701 | 2 | 2 | 6 | 19 | 1 |
| 6 | 5 Jul | France | March-Ford Cosworth | 701 | 4 | 9 | 0 | 19 | 2 |
| 7 | 19 Jul | Great Britain | March-Ford Cosworth | 701 | 8 | Ret | 0 | 19 | 3 |
| 8 | 2 Aug | Germany | March-Ford Cosworth | 701 | 7 | Ret | 0 | 19 | 4 |
| 9 | 16 Aug | Austria | March-Ford Cosworth | 701 | 4 | Ret | 0 | 19 | 5 |
| 10 | 6 Sep | Italy | March-Ford Cosworth | 701 | 4 | 2 | 6 | 25 | 2 |
| 11 | 20 Sep | Canada | Tyrrell-Ford Cosworth | 001 | 1 | Ret | 0 | 25 | 4 |
| 12 | 4 Oct | United States | Tyrrell-Ford Cosworth | 001 | 2 | Ret | 0 | 25 | 4 |
| 13 | 25 Oct | Mexico | Tyrrell-Ford Cosworth | 001 | 2 | Ret | 0 | 25 | 5 |