Third practice for the 2017 Formula 1 United States Grand Prix, the 17th round of the season, took place at the Circuit of the Americas.
Lewis Hamilton was fastest with a 1:34.478. Sebastian Vettel was second, 0.092 seconds behind, followed by Valtteri Bottas in third, 0.214 seconds off the pace.
The top five were Lewis Hamilton, Sebastian Vettel, Valtteri Bottas, Kimi Räikkönen and Max Verstappen, in that order. Mercedes and Ferrari each had two drivers in the top five, with Red Bull represented by one.
Kimi Räikkönen was fourth, 0.277 seconds behind the leader, while fifth-placed Max Verstappen was 0.625 seconds adrift.
Sergio Pérez completed the top ten, 1.324 seconds slower than the session leader.
Brendon Hartley completed the most laps with 26, while Daniil Kvyat ran the fewest with six.
At the lower end of the classification, Kevin Magnussen was 16th, Marcus Ericsson 17th, Pascal Wehrlein 18th, Romain Grosjean 19th and Daniil Kvyat 20th. The lap times and completed laps in the table follow the official classification for this session.
| Pos. | Driver | Team | Time / Gap | Laps |
|---|---|---|---|---|
| 1 | Lewis Hamilton | Mercedes | 1:34.478 | 15 |
| 2 | Sebastian Vettel | Ferrari | +0.092s | 19 |
| 3 | Valtteri Bottas | Mercedes | +0.214s | 17 |
| 4 | Kimi Räikkönen | Ferrari | +0.277s | 17 |
| 5 | Max Verstappen | Red Bull | +0.625s | 14 |
| 6 | Felipe Massa | Williams | +0.868s | 11 |
| 7 | Nico Hülkenberg | Renault | +1.130s | 21 |
| 8 | Carlos Sainz | Renault | +1.172s | 16 |
| 9 | Daniel Ricciardo | Red Bull | +1.245s | 17 |
| 10 | Sergio Pérez | Force India | +1.324s | 16 |
| 11 | Esteban Ocon | Force India | +1.487s | 17 |
| 12 | Lance Stroll | Williams | +1.640s | 12 |
| 13 | Fernando Alonso | McLaren | +1.761s | 15 |
| 14 | Stoffel Vandoorne | McLaren | +2.121s | 14 |
| 15 | Brendon Hartley | Toro Rosso | +2.340s | 26 |
| 16 | Kevin Magnussen | Haas | +2.793s | 16 |
| 17 | Marcus Ericsson | Sauber | +2.841s | 17 |
| 18 | Pascal Wehrlein | Sauber | +3.329s | 15 |
| 19 | Romain Grosjean | Haas | +3.413s | 9 |
| 20 | Daniil Kvyat | Toro Rosso | +4.022s | 6 |
