EntrantsGridGrand Prix
| Nr | Driver | Team | Car | Engine | Tyre | 
|---|---|---|---|---|---|
| 2 |  Alberto Ascari | Scuderia Ferrari |  Ferrari 500 [05] | Ferrari 500/F2 L4 2.0 | - | 
| 4 |  Giuseppe Farina | Scuderia Ferrari |  Ferrari 500 [03] | Ferrari 500/F2 L4 2.0 | - | 
| 6 |  Luigi Villoresi | Scuderia Ferrari |  Ferrari 500 [06] | Ferrari 500/F2 L4 2.0 | - | 
| 8 |  Giuseppe Ruggiero | Giuseppe Ruggiero |  Maserati A6GCS | Maserati A6G L6 2.0 | - | 
| 10 |  Rodolfo d’Apuzzo | Guglielmo Esposito |  Camen - | Fiat L4 1.1 | - | 
| 12 |  Raffaele Argenziano | Raffaele Argenziano |  Paganelli - | Fiat L4 1.1 | - | 
| 14 |  Juan Manuel Fangio | Officine Alfieri Maserati |  Maserati A6GCM [2040] | Maserati A6G L6 2.0 | - | 
| 16 |  José Froilán González | Officine Alfieri Maserati |  Maserati A6GCM [2041] | Maserati A6G L6 2.0 | - | 
| Pos | Nr | Driver | Car | Engine | Tyre | Time | Laps | 
|---|---|---|---|---|---|---|---|
| 1 | 4 |  Giuseppe Farina |  Ferrari 500 [03] | Ferrari 500/F2 L4 2.0 | - | 02:11.100 | 0 | 
| 2 | 2 |  Alberto Ascari |  Ferrari 500 [05] | Ferrari 500/F2 L4 2.0 | - | 0 | |
| 3 | 14 |  Juan Manuel Fangio |  Maserati A6GCM [2040] | Maserati A6G L6 2.0 | - | 0 | |
| 4 | 16 |  José Froilán González |  Maserati A6GCM [2041] | Maserati A6G L6 2.0 | - | 0 | |
| 5 | 6 |  Luigi Villoresi |  Ferrari 500 [06] | Ferrari 500/F2 L4 2.0 | - | 0 | |
| 6 | 12 |  Raffaele Argenziano |  Paganelli - | Fiat L4 1.1 | - | 0 | |
| 7 | 10 |  Rodolfo d’Apuzzo |  Camen - | Fiat L4 1.1 | - | 0 | |
| 8 | 8 |  Giuseppe Ruggiero |  Maserati A6GCS | Maserati A6G L6 2.0 | - | 0 | 
| Official Name | VI Gran Premio di Napoli | 
|---|---|
| Circuit | Posillipo | 
| Date | May 10 | 
| Pole | Giuseppe Farina 02:11.100 | 
| Fastest Lap | Alberto Ascari 02:07.700 | 
| Podium | 1st Giuseppe Farina, 2nd Juan Manuel Fangio, 3rd José Froilán González | 
| Prev race | International Trophy May 9 | 
| Next race | Ulster Trophy May 16 | 
| P | N | Driver | Team | Car | Engine | Tyre | Time | Laps | FL | Gr | Pts | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 |  Giuseppe Farina | Scuderia Ferrari |  Ferrari 500 [03] | Ferrari 500/F2 L4 2.0 | - | 02:12:17.100 | 60 | 1 | 0 | |
| 2 | 14 |  Juan Manuel Fangio | Officine Alfieri Maserati |  Maserati A6GCM [2040] | Maserati A6G L6 2.0 | - | 02:12:35.410 | 60 | 3 | 0 | |
| 3 | 16 |  José Froilán González | Officine Alfieri Maserati |  Maserati A6GCM [2041] | Maserati A6G L6 2.0 | - | 02:12:39.630 | 60 | 4 | 0 | |
| 4 | 6 |  Luigi Villoresi | Scuderia Ferrari |  Ferrari 500 [06] | Ferrari 500/F2 L4 2.0 | - | +1 lap | 59 | 5 | 0 | |
| 5 | 2 |  Alberto Ascari | Scuderia Ferrari |  Ferrari 500 [05] | Ferrari 500/F2 L4 2.0 | - | +5 laps | 55 | 02:07.700 | 2 | 0 | 
| 6 | 12 |  Raffaele Argenziano | Raffaele Argenziano |  Paganelli - | Fiat L4 1.1 | - | +8 laps | 52 | 6 | 0 | |
| DNF | 10 |  Rodolfo d’Apuzzo | Guglielmo Esposito |  Camen - | Fiat L4 1.1 | - | Rear axle | 22 | 7 | 0 | |
| DNF | 8 |  Giuseppe Ruggiero | Giuseppe Ruggiero |  Maserati A6GCS | Maserati A6G L6 2.0 | - | DNF | 4 | 8 | 0 |