Second practice for the 2017 Formula 1 Malaysian Grand Prix, the 15th round of the season, took place at Sepang International Circuit.
Sebastian Vettel was fastest with a 1:31.261. Kimi Räikkönen was second, 0.604 seconds behind, followed by Daniel Ricciardo in third, 0.838 seconds off the pace.
The top five were Sebastian Vettel, Kimi Räikkönen, Daniel Ricciardo, Max Verstappen and Fernando Alonso, in that order. Ferrari and Red Bull each had two drivers in the top five, with one for McLaren.
Max Verstappen was fourth, 0.848 seconds behind the leader, while fifth-placed Fernando Alonso was 1.303 seconds adrift.
Esteban Ocon completed the top ten, 1.835 seconds slower than the session leader.
Pascal Wehrlein completed the most laps with 29, while Max Verstappen ran the fewest with 11.
At the lower end of the classification, Carlos Sainz was 16th, Romain Grosjean 17th, Kevin Magnussen 18th, Pascal Wehrlein 19th and Marcus Ericsson 20th. The times and completed lap counts in the table follow the official classification for this session.
| Pos. | Driver | Team | Time / Gap | Laps |
|---|---|---|---|---|
| 1 | Sebastian Vettel | Ferrari | 1:31.261 | 23 |
| 2 | Kimi Räikkönen | Ferrari | +0.604s | 19 |
| 3 | Daniel Ricciardo | Red Bull | +0.838s | 19 |
| 4 | Max Verstappen | Red Bull | +0.848s | 11 |
| 5 | Fernando Alonso | McLaren | +1.303s | 14 |
| 6 | Lewis Hamilton | Mercedes | +1.416s | 15 |
| 7 | Valtteri Bottas | Mercedes | +1.459s | 21 |
| 8 | Sergio Pérez | Force India | +1.601s | 20 |
| 9 | Nico Hülkenberg | Renault | +1.799s | 24 |
| 10 | Esteban Ocon | Force India | +1.835s | 24 |
| 11 | Jolyon Palmer | Renault | +2.120s | 26 |
| 12 | Felipe Massa | Williams | +2.133s | 20 |
| 13 | Stoffel Vandoorne | McLaren | +2.412s | 15 |
| 14 | Lance Stroll | Williams | +2.557s | 16 |
| 15 | Pierre Gasly | Toro Rosso | +2.782s | 22 |
| 16 | Carlos Sainz | Toro Rosso | +2.843s | 19 |
| 17 | Romain Grosjean | Haas | +2.857s | 18 |
| 18 | Kevin Magnussen | Haas | +3.082s | 17 |
| 19 | Pascal Wehrlein | Sauber | +3.985s | 29 |
| 20 | Marcus Ericsson | Sauber | +4.436s | 27 |
