2005 Formula One season Drivers and constructors Drivers and constructors

| Entrant | Constructor_ | Chassis | Engine_ | Tyre | Driver | Rounds |
|---|---|---|---|---|---|---|
| Sauber Petronas | Sauber - Petronas | C24 | Petronas 05A | M | Jacques Villeneuve | All |
| Sauber Petronas | Sauber - Petronas | C24 | Petronas 05A | M | Felipe Massa | All |
| Red Bull Racing | Red Bull - Cosworth | RB1 | Cosworth TJ2005 | M | David Coulthard | All |
| Red Bull Racing | Red Bull - Cosworth | RB1 | Cosworth TJ2005 | M | Christian Klien | 1–3, 8–19 |
| Red Bull Racing | Red Bull - Cosworth | RB1 | Cosworth TJ2005 | M | Vitantonio Liuzzi | 4–7 |
| Panasonic Toyota Racing | Toyota | TF105 TF105B | Toyota RVX-05 | M | Jarno Trulli | All |
| Panasonic Toyota Racing | Toyota | TF105 TF105B | Toyota RVX-05 | M | Ralf Schumacher | 1–8, 10–19 |
| Panasonic Toyota Racing | Toyota | TF105 TF105B | Toyota RVX-05 | M | Ricardo Zonta | 9 |