| Race | Date | Driver | Team | Car | Engine | Tyre | Grid | Race | F.lap rank | |||
| 1 | ARG | 12/01/1975 | Mark Donohue | Penske | Penske PC1 | Ford Cosworth DFV (3.0L V8) | G | 16 | 7 | 10 | ||
| 2 | BRA | 26/01/1975 | Mark Donohue | Penske | Penske PC1 | Ford Cosworth DFV (3.0L V8) | G | 15 | Ret | 14 | ||
| 3 | ZAF | 01/03/1975 | Mark Donohue | Penske | Penske PC1 | Ford Cosworth DFV (3.0L V8) | G | 18 | 8 | 3 | ||
| 4 | ESP | 27/04/1975 | Mark Donohue | Penske | Penske PC1 | Ford Cosworth DFV (3.0L V8) | G | 17 | Ret | 18 | ||
| 5 | MCO | 11/05/1975 | Mark Donohue | Penske | Penske PC1 | Ford Cosworth DFV (3.0L V8) | G | 16 | Ret | 14 | ||
| 6 | BEL | 25/05/1975 | Mark Donohue | Penske | Penske PC1 | Ford Cosworth DFV (3.0L V8) | G | 21 | 11 | 15 | ||
| 7 | SWE | 08/06/1975 | Mark Donohue | Penske | Penske PC1 | Ford Cosworth DFV (3.0L V8) | G | 16 | 5 | 12 | ||
| 8 | NLD | 22/06/1975 | Mark Donohue | Penske | Penske PC1 | Ford Cosworth DFV (3.0L V8) | G | 18 | 8 | 11 | ||
| 9 | FRA | 06/07/1975 | Mark Donohue | Penske | Penske PC1 | Ford Cosworth DFV (3.0L V8) | G | 18 | Ret | 20 | ||
| 10 | USA | 05/10/1975 | John Watson | Penske | Penske PC1 | Ford Cosworth DFV (3.0L V8) | G | 12 | 9 | 14 |