| 1 | 1950 | Britain | Scuderia Ambrosiana | 5 | MURRAY David | Maserati 4CLT L4 c | Dunlop | 18 | ab | Engine |
| 1950 | Britain | Scuderia Ambrosiana | 6 | HAMPSHIRE David | Maserati 4CLT L4 c | Dunlop | 16 | 9 | |
| 1950 | Britain | Officine Alfieri Maserati | 19 | CHIRON Louis | Maserati 4CLT L4 c | Pirelli | 11 | ab | Clutch |
| 1950 | Britain | Enrico Platé | 20 | de GRAFFENRIED Emmanuel | Maserati 4CLT L4 c | Pirelli | 8 | ab | Connecting rod |
| 1950 | Britain | Enrico Platé | 21 | BIRA Prince | Maserati 4CLT L4 c | Pirelli | 5 | ab | Fuel injection |
| 2 | 1950 | Monaco | Scuderia Achille Varzi | 2 | GONZALEZ Jose-Froilan | Maserati 4CLT L4 c | Pirelli | 3 | ab | Fire |
| 1950 | Monaco | Scuderia Achille Varzi | 4 | PIAN Alfredo | Maserati 4CLT L4 c | Pirelli | 18 | np | Accident |
| 1950 | Monaco | Officine Alfieri Maserati | 44 | ROL Franco | Maserati 4CLT L4 c | Pirelli | 17 | ab | Pile-up |
| 1950 | Monaco | Officine Alfieri Maserati | 48 | CHIRON Louis | Maserati 4CLT L4 c | Pirelli | 8 | 3 | |
| 1950 | Monaco | Enrico Platé | 50 | BIRA Prince | Maserati 4CLT L4 c | Pirelli | 15 | 5 | |
| 1950 | Monaco | Enrico Platé | 52 | de GRAFFENRIED Emmanuel | Maserati 4CLT L4 c | Pirelli | 12 | ab | Pile-up |
| 3 | 1950 | Switzerland | Scuderia Achille Varzi | 2 | PAGANI Nello | Maserati 4CLT L4 c | Pirelli | 15 | 7 | |
| 1950 | Switzerland | Scuderia Achille Varzi | 2 | GONZALEZ Jose-Froilan | Maserati 4CLT L4 c | Pirelli | | f | Injury |
| 1950 | Switzerland | Officine Alfieri Maserati | 26 | CHIRON Louis | Maserati 4CLT L4 c | Pirelli | 16 | 9 | |
| 1950 | Switzerland | Officine Alfieri Maserati | 28 | ROL Franco | Maserati 4CLT L4 c | Pirelli | | f | Injury |
| 1950 | Switzerland | Enrico Platé | 30 | BIRA Prince | Maserati 4CLT L4 c | Pirelli | 8 | 4 | |
| 1950 | Switzerland | Enrico Platé | 32 | de GRAFFENRIED Emmanuel | Maserati 4CLT L4 c | Pirelli | 11 | 6 | |
| 1950 | Switzerland | Scuderia Ambrosiana | 36 | PARNELL Reg | Maserati 4CLT L4 c | Dunlop | | f | Not present |
| 4 | 1950 | France | Officine Alfieri Maserati | 28 | ROL Franco | Maserati 4CLT L4 c | Pirelli | 7 | ab | Engine |
| 1950 | France | Officine Alfieri Maserati | 30 | CHIRON Louis | Maserati 4CLT L4 c | Pirelli | 14 | ab | Engine |
| 1950 | France | Scuderia Ambrosiana | 32 | PARNELL Reg | Maserati 4CLT L4 c | Dunlop | 12 | ab | Engine |
| 1950 | France | Scuderia Ambrosiana | 34 | HAMPSHIRE David | Maserati 4CLT L4 c | Dunlop | 18 | ab | Engine |
| 1950 | France | Scuderia Ambrosiana | 34 | MURRAY David | Maserati 4CLT L4 c | Dunlop | | t | Substitute |
| 1950 | France | Scuderia Achille Varzi | 36 | GONZALEZ Jose-Froilan | Maserati 4CLT L4 c | Pirelli | 8 | ab | Engine |
| 1950 | France | Scuderia Achille Varzi | 38 | COMOTTI Franco | Maserati 4CLT L4 c | Pirelli | | f | Not present |
| 5 | 1950 | Italy | Officine Alfieri Maserati | 6 | CHIRON Louis | Maserati 4CLT L4 c | Pirelli | 19 | ab | Oil pressure |
| 1950 | Italy | Officine Alfieri Maserati | 20 | ROL Franco | Maserati 4CLT L4 c | Pirelli | 9 | ab | Engine |
| 1950 | Italy | Privé | 20 | De FILIPPIS Luigi | Maserati 4CLT L4 c | Pirelli | | f | Not present |
| 1950 | Italy | Scuderia Ambrosiana | 26 | PARNELL Reg | Maserati 4CLT L4 c | Dunlop | | f | Not present |
| 1950 | Italy | Privé | 28 | PIETSCH Paul | Maserati 4CLT L4 c | Pirelli | 27 | ab | Engine |
| 1950 | Italy | Enrico Platé | 30 | BIRA Prince | Maserati 4CLT L4 c | Pirelli | 15 | ab | Engine |
| 1950 | Italy | Enrico Platé | 38 | de GRAFFENRIED Emmanuel | Maserati 4CLT L4 c | Pirelli | 17 | 6 | |
| 1950 | Italy | Scuderia Ambrosiana | 50 | MURRAY David | Maserati 4CLT L4 c | Dunlop | 24 | ab | Gearbox |
| 6 | 1951 | Switzerland | Enrico Platé | 30 | CHIRON Louis | Maserati 4CLT L4 c | Pirelli | 19 | 7 | |
| 1951 | Switzerland | Enrico Platé | 32 | SCHELL Harry | Maserati 4CLT L4 c | Pirelli | 17 | 12 | |
| 7 | 1951 | Belgium | Ecurie Siam | 28 | BIRA Prince | OSCA 4500 V12 | Pirelli | | f | Car unavailable |
| 1951 | Belgium | Enrico Platé | 30 | GONZALEZ Jose-Froilan | Maserati 4CLT L4 c | Pirelli | | f | Not present |
| 1951 | Belgium | Privé | 34 | HILLIS Noel | Maserati 4CLT L4 c | Pirelli | | t | Substitute |
| 8 | 1951 | France | Enrico Platé | 18 | de GRAFFENRIED Emmanuel | Maserati 4CLT L4 c | Pirelli | 16 | ab | Transmission |
| 1951 | France | Enrico Platé | 20 | SCHELL Harry | Maserati 4CLT L4 c | Pirelli | 22 | ab | Overheating |
| 1951 | France | Ecurie Siam | 22 | BIRA Prince | Maserati 4CLT L4 c | Pirelli | | f | Not present |
| 9 | 1951 | Britain | Scuderia Ambrosiana | 15 | MURRAY David | Maserati 4CLT L4 c | Dunlop | 15 | ab | Valve |
| 1951 | Britain | Privé | 16 | JAMES John | Maserati 4CLT L4 c | Dunlop | 17 | ab | Radiator |
| 10 | 1951 | Germany | Enrico Platé | 79 | de GRAFFENRIED Emmanuel | Maserati 4CLT L4 c | Pirelli | 16 | ab | Engine |
| 1951 | Germany | Enrico Platé | 80 | PIETSCH Paul | Maserati 4CLT L4 c | Pirelli | | f | Drove another car |
| 1951 | Germany | Scuderia Ambrosiana | 89 | MURRAY David | Maserati 4CLT L4 c | Dunlop | | np | Accident |
| 1951 | Germany | Privé | 92 | BRANCA Toni | Maserati 4CLT L4 c | Pirelli | 17 | ab | Engine |
| 1951 | Germany | Ecurie Siam | 95 | BIRA Prince | Maserati 4CLT L4 c | Pirelli | | f | Not present |
| 1951 | Germany | Escuderia Bandeirantes | 97 | LANDI Chico | Maserati 4CLT L4 c | Pirelli | | f | Not present |
| 11 | 1951 | Spain | Ecurie Siam | 18 | BIRA Prince | OSCA 4500 V12 | Pirelli | 19 | ab | Engine |
| 1951 | Spain | Scuderia Milano | 44 | GODIA-SALES Francisco | Maserati 4CLT L4 c | Pirelli | 17 | 10 | |
| 1951 | Spain | Scuderia Milano | 46 | JOVER Juan | Maserati 4CLT L4 c | Pirelli | 18 | np | Engine |
| 1951 | Spain | Privé | 46 | PALACIO Joaquin | Maserati 4CLT L4 c | Pirelli | | f | Not present |
| 1951 | Spain | Escuderia Bandeirantes | 48 | LANDI Chico | Maserati 4CLT L4 c | Pirelli | | f | Not present |
| 1951 | Spain | Privé | 48 | BRANCA Toni | Maserati 4CLT L4 c | Pirelli | | f | Not present |