October 23, 2015 – Mercedes’ Nico Rosberg set the quickest in a damp first practice session for the 2015 US Grand Prix in Austin, with the Red Bulls of Daniil Kvyat and Daniel Ricciardo rounding out the top 3 in a session that give little away.
| Pos | Driver | Car | Time | Gap | Laps |
|---|---|---|---|---|---|
| 1 | Nico Rosberg | Mercedes | 1m53.989s | – | 7 |
| 2 | Daniil Kvyat | Red Bull/Renault | 1m55.224s | 1.235s | 6 |
| 3 | Daniel Ricciardo | Red Bull/Renault | 1m55.592s | 1.603s | 10 |
| 4 | Carlos Sainz | Toro Rosso/Renault | 1m55.667s | 1.678s | 8 |
| 5 | Lewis Hamilton | Mercedes | 1m55.693s | 1.704s | 4 |
| 6 | Sebastian Vettel | Ferrari | 1m55.710s | 1.721s | 10 |
| 7 | Max Verstappen | Toro Rosso/Renault | 1m55.969s | 1.980s | 7 |
| 8 | Kimi Raikkonen | Ferrari | 1m56.326s | 2.337s | 10 |
| 9 | Fernando Alonso | McLaren/Honda | 1m56.839s | 2.850s | 18 |
| 10 | Valtteri Bottas | Williams/Mercedes | 1m56.866s | 2.877s | 15 |
| 11 | Felipe Massa | Williams/Mercedes | 1m57.081s | 3.092s | 13 |
| 12 | Sergio Perez | Force India/Mercedes | 1m57.139s | 3.150s | 4 |
| 13 | Jenson Button | McLaren/Honda | 1m57.495s | 3.506s | 20 |
| 14 | Nico Hulkenberg | Force India/Mercedes | 1m57.518s | 3.529s | 4 |
| 15 | Romain Grosjean | Lotus/Mercedes | 1m58.319s | 4.330s | 10 |
| 16 | Raffaele Marciello | Sauber/Ferrari | 1m59.431s | 5.442s | 19 |
| 17 | Marcus Ericsson | Sauber/Ferrari | 1m59.743s | 5.754s | 18 |
| 18 | Alexander Rossi | Marussia/Ferrari | 2m01.154s | 7.165s | 11 |
| 19 | Will Stevens | Marussia/Ferrari | 2m01.907s | 7.918s | 13 |
| 20 | Pastor Maldonado | Lotus/Mercedes | – | – | 1 |