| Pos | Constructor | Wins | Pts |
|---|---|---|---|
| 1 | Maserati Italy | 4 | 78 |
| 2 | Ferrari Italy | 0 | 48 |
| 3 | Vanwall United Kingdom | 4 | 37 |
| 4 | Epperly United States Of America | 1 | 15 |
| 5 | Kurtis Kraft United States Of America | 0 | 5 |
| 6 | Kuzma United States Of America | 0 | 4 |
| 7 | Connaught United Kingdom | 0 | 3 |
| 8 | Cooper United Kingdom | 0 | 2 |
| 9 | Watson United States Of America | 0 | 0 |
| 10 | Dunn United States Of America | 0 | 0 |
| 11 | Lesovsky United States Of America | 0 | 0 |
| 12 | Phillips United States Of America | 0 | 0 |
| 13 | Porsche Germany | 0 | 0 |
| 14 | BRM United Kingdom | 0 | 0 |
