1 | 3 | Spanish Grand Prix | 24 | STP March Racing Team | March 721X | Ford Cosworth Cosworth DFV | 25 | Differential |
2 | 6 | French Grand Prix | 14 | STP March Racing Team | March 721 | Ford Cosworth Cosworth DFV | 21 | Halfshaft |
3 | 8 | German Grand Prix | 23 | STP March Racing Team | March 721 | Ford Cosworth Cosworth DFV | 24 | Oil Leak |