EntrantsGridGrand Prix
| Nr | Driver | Team | Car | Engine | Tyre | 
|---|---|---|---|---|---|
| 2 |  Stuart Lewis-Evans | Connaught Engineering |  Connaught B [B5] | Alta GP L4 2.5 | - | 
| 4 |  Alan Mann | A. Mann |  HWM 53 | Alta GP L4 2.5 | - | 
| 6 |  Ottorino Volonterio | O. Volonterio |  Maserati 250F [2515] | Maserati 250F1 L6 2.5 | - | 
| 8 |  Horace Gould | H. H. Gould |  Maserati 250F [2514] | Maserati 250F1 L6 2.5 | - | 
| 10 |  Luigi Bellucci | Luigi Bellucci |  Maserati A6GCS [2097] | Maserati A6G L6 2.0 | - | 
| 12 |  Berardo Taraschi | B. Taraschi |  Ferrari 166 F2 [GP2-49] | Ferrari 166/F2 V12 2.0 | - | 
| 14 |  Mike Hawthorn | Scuderia Ferrari |  Ferrari D50 [0005] | Ferrari D50 V8 2.5 | - | 
| 16 |  Umberto Maglioli | Umberto Maglioli |  Porsche 718 RSK [718-001] | Porsche 547 F4 1.5 | - | 
| 18 |  Fernando Natella | Fernando Natella |  Osca MT4 [1175] | Osca 2000 L6 2.0 | - | 
| 20 |  Peter Collins | Scuderia Ferrari |  Ferrari 801 [0008] | Ferrari D50 V8 2.5 | - | 
| 22 |  Bruce Halford | Bruce Halford |  Maserati 250F [2504/56] | Maserati 250F1 L6 2.5 | - | 
| 24 |  Luigi Musso | Scuderia Ferrari |  Ferrari D156 [0011] | Ferrari 156/F2 V6 1.5 | - | 
| 28 |  Hermano da Silva Ramos | Équipe Gordini |  Gordini T16 [32] | Gordini T23 L6 2.5 | - | 
| 32 |  Raffaele Fiordelesi | Raffaele Fiordelesi |  Fiordelesi - | Alfa Romeo 1900 L4 2.0 | - | 
| 34 |  Marino Brandoli | Marino Brandoli |  Marino - | Lancia B20 V6 2.5 | - | 
| 36 |  Masten Gregory | Scuderia Centro Sud |  Maserati 250F [2507/23/22] | Maserati 250F1 L6 2.5 | - | 
| Pos | Nr | Driver | Car | Engine | Tyre | Time | Laps | 
|---|---|---|---|---|---|---|---|
| 1 | 14 |  Mike Hawthorn |  Ferrari D50 [0005] | Ferrari D50 V8 2.5 | - | 02:08.000 | 0 | 
| 2 | 20 |  Peter Collins |  Ferrari 801 [0008] | Ferrari D50 V8 2.5 | - | 02:08.000 | 0 | 
| 3 | 24 |  Luigi Musso |  Ferrari D156 [0011] | Ferrari 156/F2 V6 1.5 | - | 02:09.200 | 0 | 
| 4 | 8 |  Horace Gould |  Maserati 250F [2514] | Maserati 250F1 L6 2.5 | - | 02:12.600 | 0 | 
| 5 | 2 |  Stuart Lewis-Evans |  Connaught B [B5] | Alta GP L4 2.5 | - | 02:14.200 | 0 | 
| 6 | 36 |  Masten Gregory |  Maserati 250F [2507/23/22] | Maserati 250F1 L6 2.5 | - | 02:14.900 | 0 | 
| 7 | 28 |  Hermano da Silva Ramos |  Gordini T16 [32] | Gordini T23 L6 2.5 | - | 02:20.800 | 0 | 
| 8 | 16 |  Umberto Maglioli |  Porsche 718 RSK [718-001] | Porsche 547 F4 1.5 | - | 02:22.000 | 0 | 
| 9 | 12 |  Berardo Taraschi |  Ferrari 166 F2 [GP2-49] | Ferrari 166/F2 V12 2.0 | - | 02:25.300 | 0 | 
| 10 | 32 |  Raffaele Fiordelesi |  Fiordelesi - | Alfa Romeo 1900 L4 2.0 | - | 02:33.400 | 0 | 
| 11 | 34 |  Marino Brandoli |  Marino - | Lancia B20 V6 2.5 | - | 02:34.000 | 0 | 
| 12 | 18 |  Fernando Natella |  Osca MT4 [1175] | Osca 2000 L6 2.0 | - | 02:37.300 | 0 | 
| 13 | 4 |  Alan Mann |  HWM 53 | Alta GP L4 2.5 | - | 02:40.900 | 0 | 
| 14 | 10 |  Luigi Bellucci |  Maserati A6GCS [2097] | Maserati A6G L6 2.0 | - | 0 | |
| 15 | 22 |  Bruce Halford |  Maserati 250F [2504/56] | Maserati 250F1 L6 2.5 | - | 02:24.400 | 0 | 
| 16 | 6 |  Ottorino Volonterio |  Maserati 250F [2515] | Maserati 250F1 L6 2.5 | - | 02:48.300 | 0 | 
| Official Name | X Gran Premio di Napoli | 
|---|---|
| Circuit | Posillipo | 
| Date | April 28 | 
| Pole | Mike Hawthorn 02:08.000 | 
| Fastest Lap | Mike Hawthorn 02:05.600 | 
| Podium | 1st Peter Collins, 2nd Mike Hawthorn, 3rd Luigi Musso | 
| Prev race | Grand Prix de Pau April 22 | 
| Next race | Grand Prix de Reims July 14 | 
| P | N | Driver | Team | Car | Engine | Tyre | Time | Laps | FL | Gr | Pts | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 20 |  Peter Collins | Scuderia Ferrari |  Ferrari 801 [0008] | Ferrari D50 V8 2.5 | - | 02:10:31.200 | 60 | 2 | 0 | |
| 2 | 14 |  Mike Hawthorn | Scuderia Ferrari |  Ferrari D50 [0005] | Ferrari D50 V8 2.5 | - | 02:11:02.100 | 60 | 02:05.600 | 1 | 0 | 
| 3 | 24 |  Luigi Musso | Scuderia Ferrari |  Ferrari D156 [0011] | Ferrari 156/F2 V6 1.5 | - | 02:11:02.400 | 60 | 3 | 0 | |
| 4 | 8 |  Horace Gould | H. H. Gould |  Maserati 250F [2514] | Maserati 250F1 L6 2.5 | - | +1 lap | 59 | 4 | 0 | |
| 5 | 36 |  Masten Gregory | Scuderia Centro Sud |  Maserati 250F [2507/23/22] | Maserati 250F1 L6 2.5 | - | +2 laps | 58 | 6 | 0 | |
| 6 | 22 |  Bruce Halford | Bruce Halford |  Maserati 250F [2504/56] | Maserati 250F1 L6 2.5 | - | +3 laps | 57 | 15 | 0 | |
| 7 | 10 |  Luigi Bellucci | Luigi Bellucci |  Maserati A6GCS [2097] | Maserati A6G L6 2.0 | - | +4 laps | 56 | 14 | 0 | |
| 8 | 16 |  Umberto Maglioli | Umberto Maglioli |  Porsche 718 RSK [718-001] | Porsche 547 F4 1.5 | - | +7 laps | 53 | 8 | 0 | |
| 9 | 18 |  Fernando Natella | Fernando Natella |  Osca MT4 [1175] | Osca 2000 L6 2.0 | - | +10 laps | 50 | 12 | 0 | |
| DNF | 12 |  Berardo Taraschi | B. Taraschi |  Ferrari 166 F2 [GP2-49] | Ferrari 166/F2 V12 2.0 | - | Fuel tank | 47 | 9 | 0 | |
| DNF | 32 |  Raffaele Fiordelesi | Raffaele Fiordelesi |  Fiordelesi - | Alfa Romeo 1900 L4 2.0 | - | Engine | 47 | 10 | 0 | |
| DNF | 2 |  Stuart Lewis-Evans | Connaught Engineering |  Connaught B [B5] | Alta GP L4 2.5 | - | Mechanical | 44 | 5 | 0 | |
| DNF | 28 |  Hermano da Silva Ramos | Équipe Gordini |  Gordini T16 [32] | Gordini T23 L6 2.5 | - | Brakes | 14 | 7 | 0 | |
| DNF | 34 |  Marino Brandoli | Marino Brandoli |  Marino - | Lancia B20 V6 2.5 | - | Water line | 9 | 11 | 0 | |
| DNF | 6 |  Ottorino Volonterio | O. Volonterio |  Maserati 250F [2515] | Maserati 250F1 L6 2.5 | - | Mechanical | 4 | 16 | 0 | |
| DNF | 4 |  Alan Mann | A. Mann |  HWM 53 | Alta GP L4 2.5 | - | Magneto | 3 | 13 | 0 | |
| T | 36 |  Masten Gregory | Scuderia Centro Sud |  Maserati 250F [2502/11] | Maserati 250F1 L6 2.5 | - | Practice | 0 | 0 |