Red Bull’s Kvyat was fastest in second practice for the Singapore Grand Prix on the evening of September 18 with a 1:46.142. Räikkönen was just 0.039 seconds slower, while Ricciardo finished third to put both Red Bulls in the top three.
After fuel-system problems in first practice, Kvyat completed 34 laps in the second session and went fastest. Mercedes and Ferrari had topped every previous practice session in the 2015 season.
Räikkönen led for a time during the soft-tyre phase and improved further after switching to supersofts. Kvyat then moved ahead by 0.039 seconds, while Ricciardo finished 0.114 seconds off the fastest time.
Hamilton was the fastest Mercedes driver in fourth, ahead of Vettel in fifth and Pérez in sixth. Rosberg was only seventh, 0.639 seconds slower than Kvyat.
Stevens hit the tyre barrier at Turn 11 around six minutes into the session, bringing out a brief red flag. He did not improve his time afterwards. Team-mate Rossi, who had crashed in FP1, finally joined the session with around 20 minutes remaining after repairs.
Sainz brushed the wall at Turn 5 in his Toro Rosso and picked up a left-rear puncture. He eventually finished 15th, while the other Toro Rosso driver, Verstappen, was tenth.
Alonso finished eighth, 0.817 seconds behind the fastest time. Hülkenberg was ninth and Massa 11th, with Nasr and Ericsson 12th and 13th respectively.
Rossi ended the session in 19th, while Stevens completed only three laps and was 20th. Maldonado was 18th after brushing the barrier, and both Lotus cars finished outside the top ten.
| Position | No. | Driver | Team | Time/Gap | Laps |
|---|---|---|---|---|---|
| 1 | 26 | Daniil Kvyat | Red Bull | 1:46.142 | 34 |
| 2 | 7 | Kimi Räikkönen | Ferrari | +0.039 s | 34 |
| 3 | 3 | Daniel Ricciardo | Red Bull | +0.114 s | 29 |
| 4 | 44 | Lewis Hamilton | Mercedes | +0.337 s | 33 |
| 5 | 5 | Sebastian Vettel | Ferrari | +0.345 s | 35 |
| 6 | 11 | Sergio Pérez | Force India | +0.517 s | 30 |
| 7 | 6 | Nico Rosberg | Mercedes | +0.639 s | 34 |
| 8 | 14 | Fernando Alonso | McLaren | +0.817 s | 26 |
| 9 | 27 | Nico Hülkenberg | Force India | +1.152 s | 35 |
| 10 | 33 | Max Verstappen | Toro Rosso | +1.285 s | 32 |
| 11 | 19 | Felipe Massa | Williams | +1.542 s | 28 |
| 12 | 12 | Felipe Nasr | Sauber | +1.613 s | 26 |
| 13 | 9 | Marcus Ericsson | Sauber | +1.653 s | 33 |
| 14 | 22 | Jenson Button | McLaren | +1.746 s | 28 |
| 15 | 55 | Carlos Sainz | Toro Rosso | +1.870 s | 23 |
| 16 | 8 | Romain Grosjean | Lotus | +1.954 s | 32 |
| 17 | 77 | Valtteri Bottas | Williams | +1.976 s | 28 |
| 18 | 13 | Pastor Maldonado | Lotus | +3.952 s | 30 |
| 19 | 53 | Alexander Rossi | Marussia | +10.597 s | 9 |
| 20 | 28 | Will Stevens | Marussia | +13.790 s | 3 |