September 25, 2015 – Carlos Sainz Jr was quickest for Toro Rosso in first practice for the Japanese Grand Prix as persistent rain kept Formula 1 running to a minimum at Suzuka. The Spaniard clocked a 1m49.434s, half a second clear of Red Bull’s Daniil Kvyat with Mercedes’ Nico Rosberg third.
| Pos | Driver | Car | Time | Gap | Laps |
|---|---|---|---|---|---|
| 1 | Carlos Sainz | Toro Rosso/Renault | 1m49.434s | – | 10 |
| 2 | Daniil Kvyat | Red Bull/Renault | 1m49.938s | 0.504s | 7 |
| 3 | Nico Rosberg | Mercedes | 1m50.077s | 0.643s | 14 |
| 4 | Sebastian Vettel | Ferrari | 1m50.519s | 1.085s | 12 |
| 5 | Lewis Hamilton | Mercedes | 1m50.722s | 1.288s | 6 |
| 6 | Max Verstappen | Toro Rosso/Renault | 1m50.940s | 1.506s | 10 |
| 7 | Kimi Raikkonen | Ferrari | 1m51.212s | 1.778s | 15 |
| 8 | Felipe Massa | Williams/Mercedes | 1m52.288s | 2.854s | 12 |
| 9 | Marcus Ericsson | Sauber/Ferrari | 1m53.820s | 4.386s | 12 |
| 10 | Valtteri Bottas | Williams/Mercedes | 1m53.964s | 4.530s | 14 |
| 11 | Felipe Nasr | Sauber/Ferrari | 1m54.013s | 4.579s | 9 |
| 12 | Jenson Button | McLaren/Honda | 1m55.678s | 6.244s | 6 |
| 13 | Daniel Ricciardo | Red Bull/Renault | – | – | 1 |
| 14 | Nico Hulkenberg | Force India/Mercedes | – | – | 4 |
| 15 | Sergio Perez | Force India/Mercedes | – | – | 3 |
| 16 | Fernando Alonso | McLaren/Honda | – | – | 5 |
| 17 | Pastor Maldonado | Lotus/Mercedes | – | – | 1 |
| 18 | Jolyon Palmer | Lotus/Mercedes | – | – | 1 |
| 19 | Will Stevens | Marussia/Ferrari | – | – | 3 |
| 20 | Alexander Rossi | Marussia/Ferrari | – | – | 4 |