1 | 2 | Spanish Grand Prix | 10 | Jo Siffert | Lotus 49B | Ford Cosworth Cosworth DFV | 6 | Oil Leak |
2 | 7 | German Grand Prix | 11 | Jo Siffert | Lotus 49B | Ford Cosworth Cosworth DFV | 4 | Suspension |
3 | 8 | Italian Grand Prix | 30 | Jo Siffert | Lotus 49B | Ford Cosworth Cosworth DFV | 8 | Engine |
4 | 9 | Canadian Grand Prix | 9 | Jo Siffert | Lotus 49B | Ford Cosworth Cosworth DFV | 8 | Halfshaft |
5 | 10 | United States Grand Prix | 10 | Jo Siffert | Lotus 49B | Ford Cosworth Cosworth DFV | 5 | Fuel System |
6 | 11 | Mexican Grand Prix | 10 | Jo Siffert | Lotus 49B | Ford Cosworth Cosworth DFV | 5 | Accident |