1 | 2 | Spanish Grand Prix | 16 | Jo Siffert | Lotus 49 | Ford Cosworth Cosworth DFV | 10 | Transmission |
2 | 3 | Monaco Grand Prix | 17 | Jo Siffert | Lotus 49 | Ford Cosworth Cosworth DFV | 3 | Differential |
3 | 4 | Belgian Grand Prix | 3 | Jo Siffert | Lotus 49 | Ford Cosworth Cosworth DFV | 9 | Fuel Pressure |
4 | 5 | Dutch Grand Prix | 21 | Jo Siffert | Lotus 49 | Ford Cosworth Cosworth DFV | 13 | Gearbox |
5 | 8 | German Grand Prix | 16 | Jo Siffert | Lotus 49B | Ford Cosworth Cosworth DFV | 9 | Ignition |
6 | 9 | Italian Grand Prix | 20 | Jo Siffert | Lotus 49B | Ford Cosworth Cosworth DFV | 9 | Suspension |
7 | 10 | Canadian Grand Prix | 12 | Jo Siffert | Lotus 49B | Ford Cosworth Cosworth DFV | 3 | Oil Leak |