1 | 1973 | Austrian Grand Prix | 3 | 28 | Team Ensign | Ensign N173 | Ford Cosworth Cosworth DFV | 19 | Fuel System |
2 | 1973 | Italian Grand Prix | 4 | 28 | Team Ensign | Ensign N173 | Ford Cosworth Cosworth DFV | 17 | Overheating |
3 | 1973 | United States Grand Prix | 6 | 28 | Team Ensign | Ensign N173 | Ford Cosworth Cosworth DFV | 27 | Throttle |
4 | 1974 | Spanish Grand Prix | 7 | 8 | Motor Racing Developments | Brabham BT44 | Ford Cosworth Cosworth DFV | 24 | Oil Leak |
5 | 1974 | Belgian Grand Prix | 8 | 8 | Motor Racing Developments | Brabham BT44 | Ford Cosworth Cosworth DFV | 22 | Engine |