Alfa Romeo
Juan Manuel Fangio a terminé P1 du Championnat du Monde 1951 avec 37 points. En 8 courses : 3 victoires, 5 podiums et 4 pole positions — meilleur résultat P1.
| Round | Race | Team | Grid | Finish | Points | Status |
|---|---|---|---|---|---|---|
| 1 | Swiss Grand Prix | Alfa Romeo | 1 | P1 | 9 | Finished |
| 3 | Belgian Grand Prix | Alfa Romeo | 1 | P9 | 1 | +4 Laps |
| 4 | French Grand Prix | Alfa Romeo | 7 | P1 | 5 | Finished |
| 4 | French Grand Prix | Alfa Romeo | 1 | P11 | +22 Laps | |
| 5 | British Grand Prix | Alfa Romeo | 2 |
| P2 |
| 6 |
| Finished |
| 6 | German Grand Prix | Alfa Romeo | 3 | P2 | 7 | Finished |
| 7 | Italian Grand Prix | Alfa Romeo | 1 | P10 | Engine |
| 8 | Spanish Grand Prix | Alfa Romeo | 2 | P1 | 9 | Finished |