Total de marques participants: 24 (13 a Indianapolis)
Total de models participants: 33 (15 a Indianapolis)
Total de motors participants: 13 (2 a Indianapolis)
Total de pneumàtics participants: 4 (Pirelli, Dunlop, Englebert i Firestone)
Debutants: 11 (Bromme, BRM, Kuzma, Hall, HWM-Alta, OSCA, Pawl, Schroeder, Sherman, Trevis, Veritas)
Última temporada: 2 (Hall, Talbot-Lago)
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| El P15 de 16 cilindres va ser el primer BRM de Fórmula 1. |
| Marca | Model | Motor | Pneumàtics |
| Alfa Romeo | 159 |
159 LBC 1500 cc L8 S
|
Pirelli |
| Ferrari | 125 212 375 375 tw |
125 F1 1500 cc V12 S 212 2600 cc V12 375 F1 4500 cc V12 375 F1 4500 cc V12 |
Dunlop Pirelli Pirelli/Englebert Pirelli |
| Talbot-Lago | T26C | 23CV 4500 cc L6 | Dunlop |
| Maserati | 4CLT-48 4CLT-48 4CLT-50 8CTF |
4CLT 1500 cc L4 S OSCA 4500 cc V12 Milano 1500 cc L4 S Offenhauser 3000 cc L4 S |
Pirelli Pirelli Pirelli Firestone |
| Simca-Gordini | T11 T15 |
15C 1500 cc L4 S 15C 1500 cc L4 S |
Englebert |
| BRM | P15 | P15 1500 cc V16 S | Dunlop |
| ERA | B | 1500 cc L6 S | Dunlop |
| Alta | GP | 1500 cc L4 S | Dunlop |
| HWM | 51 | Alta 2000 cc L4 S | Dunlop |
| OSCA | 4500G | 4500 4500 cc V12 | Pirelli |
| Veritas | Meteor | 4500 2500 cc L6 | Pirelli |
| Kurtis Kraft | 2000 3000 3000 |
Offenhauser 4500 cc L4 Offenhauser 4500 cc L4 Novi 3000 cc L8 S |
Firestone |
| Marchese | Marchese | Offenhauser 4500 cc L4 | Firestone |
| Moore | Moore | Offenhauser 4500 cc L4 | Firestone |
| Deidt | Deidt | Offenhauser 4500 cc L4 | Firestone |
| Schroeder | Schroeder | Offenhauser 4500 cc L4 | Firestone |
| Lesovsky | Lesovsky | Offenhauser 4500 cc L4 | Firestone |
| Bromme | Bromme | Offenhauser 4500 cc L4 | Firestone |
| Kuzma | Kuzma | Offenhauser 4500 cc L4 | Firestone |
| Sherman | Sherman | Offenhauser 4500 cc L4 | Firestone |
| Hall | Hall | Offenhauser 3000 cc L4 S | Firestone |
| Pawl | Pawl | Offenhauser 4500 cc L4 | Firestone |
| Watson | Watson | Offenhauser 4500 cc L4 | Firestone |
| Trevis | Trevis | Offenhauser 4500 cc L4 | Firestone |
 |
| El 375 (aquí conduit per Alonso el 2011) va donar la primera victòria a Ferrari. |