| Pos | Manufacturers | I | F | GB | RSM | CZ | B | D | TR | CN | UAE | BRN | Pts |
| 1 | MASERATI | 23 | 26 | 27 | 15 | 15 | 42 | 22 | 26 | 14 | 17 | 12 | 239 |
| 2 | FERRARI | 13 | 8 | 10 | 11 | 17 | 17 | 5 | 9 | 12 | 14 | 9 | 125 |
| 3 | CORVETTE | 0 | 5 | 0 | 10 | 5 | 8 | 6 | 4 | 10 | 6 | 6 | 60 |
| 4 | SALEEN | 1 | 0 | 2 | 2 | 0 | 3 | 5 | 0 | 0 | 0 | 2 | 15 |
| 5 | ASTON MARTIN | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 10 |
| 6 | LISTER | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 2 | 0 | 6 |
| 7 | LAMBORGHINI | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 |