Total de marques participants: 20 (10 a Indianapolis)
Total de models participants: 28 (16 a Indianapolis)
Total de motors participants: 9 (1 a Indianapolis)
Total de pneumàtics participants: 5 (Pirelli, Dunlop, Englebert, Continental i Firestone)
Debutants: 2 (Arzani-Volpini, Epperly)
Última temporada: 6 (Arzani-Volpini, HWM, Lancia, Pankratz, Pawl, Schroeder)
 |
| Jack Brabham va debutar al mundial amb aquest Cooper T40-Bristol. |
| Marca | Model | Motor | Pneumàtics |
| Cooper | T40 |
Bristol BS1 2000 cc L6
|
Dunlop |
| Ferrari | 555 625 |
555 2500 cc L4 625 2500 cc L4 |
Englebert |
| Connaught | B | Alta GP 2500 cc L4 | Dunlop |
| Maserati | A6GCM 250F |
A6 2000 cc L6 250F1 2500 cc L6 |
Pirelli |
| Gordini | T16 | 23 2500 cc L6 | Englebert |
| Mercedes-Benz | W196 | M196 2500 cc L8 | Continental |
| HWM | 53 | Alta GP 2500 cc L4 | Dunlop |
| Lancia | D50 | DS50 2500 cc V8 | Pirelli |
| Arzani-Volpini | F1 | Maserati 4CLT 2500 cc L4 | Pirelli |
| Vanwall | VW55 | 254 2500 cc L4 | Dunlop |
| Kurtis Kraft | 2000 3000 4000 500A 500B 500C 500D |
Offenhauser 4500 cc L4 Offenhauser 4500 cc L4 Offenhauser 4500 cc L4 Offenhauser 4500 cc L4 Offenhauser 4500 cc L4 Offenhauser 4500 cc L4 Offenhauser 4500 cc L4 |
Firestone |
| Stevens | Stevens | Offenhauser 4500 cc L4 | Firestone |
| Schroeder | Schroeder | Offenhauser 4500 cc L4 | Firestone |
| Lesovsky | Lesovsky | Offenhauser 4500 cc L4 | Firestone |
| Trevis | Trevis | Offenhauser 4500 cc L4 | Firestone |
| Kuzma | Kuzma | Offenhauser 4500 cc L4 | Firestone |
| Pankratz | Pankratz | Offenhauser 4500 cc L4 | Firestone |
| Epperly | Epperly | Offenhauser 4500 cc L4 | Firestone |
| Pawl | Pawl | Offenhauser 4500 cc L4 | Firestone |
| Phillips | Phillips | Offenhauser 4500 cc L4 | Firestone |
 |
| El D50 era un cotxe avançat al seu temps, però Lancia no el va poder explotar. |