| 🇮🇹Italian Grand Prix 1955 | 11 Sept 1955 | Maserati | 7 | 7 | |
| 🇬🇧British Grand Prix 1955 | 16 Jul 1955 | Maserati | 6 | Engine | |
| 🇳🇱Dutch Grand Prix 1955 | 19 Jun 1955 | Maserati | 7 | 4 | 4 |
| 🇧🇪Belgian Grand Prix 1955 | 5 Jun 1955 | Maserati | 13 | 5 | 1 |
| 🇲🇨Monaco Grand Prix 1955 | 22 May 1955 | Maserati | 6 | Transmission | |
| 🇦🇷Argentine Grand Prix 1955 | 16 Jan 1955 | Maserati | 16 | 5 | 2 |
| 🇪🇸Spanish Grand Prix 1954 | 24 Oct 1954 | Maserati | 11 | 4 | 3 |
| 🇮🇹Italian Grand Prix 1954 | 5 Sept 1954 | Maserati | 10 | Suspension | |
| 🇨🇭Swiss Grand Prix 1954 | 22 Aug 1954 | Maserati | 12 | 4 | 3 |
| 🇩🇪German Grand Prix 1954 | 1 Aug 1954 | Maserati | 17 | Fuel leak | |
| 🇬🇧British Grand Prix 1954 | 17 Jul 1954 | Maserati | 32 | 6 | |
| 🇫🇷French Grand Prix 1954 | 4 Jul 1954 | Maserati | 11 | Engine | |
| 🇧🇪Belgian Grand Prix 1954 | 20 Jun 1954 | Maserati | 12 | Heat shield fire | |
| 🇦🇷Argentine Grand Prix 1954 | 17 Jan 1954 | Maserati | 8 | Oil leak | |
| 🇮🇹Italian Grand Prix 1953 | 13 Sept 1953 | Gordini | 16 | 6 | |
| 🇫🇷French Grand Prix 1953 | 5 Jul 1953 | Gordini | 24 | Axle | |
| 🇳🇱Dutch Grand Prix 1953 | 7 Jun 1953 | Gordini | 19 | Transmission | |