1 | 4 | French Grand Prix | 48 | Harry Schell | Maserati A6GCM | Maserati 250F | 21 | Fuel Pump |
2 | 7 | Swiss Grand Prix | 34 | Officine Alfieri Maserati | Maserati 250F | Maserati 250F | 13 | Fuel Pump |
3 | 9 | Spanish Grand Prix | 24 | Harry Schell | Maserati 250F | Maserati 250F | 4 | Transmission |