Lewis Hamilton set the fastest time of FP2 for the Spanish Grand Prix, beating Sebastian Vettel by 0.4s.
While Mercedes had been almost a second clear of the field in the opening practice session, Hamilton was pushed more closely by Vettel as Ferrari looked more competitive on the medium tyre. Hamilton's time of 1:26.852 left him a little under half a second clear of Vettel, with Nico Rosberg in third but 0.75s off his team-mate.
Kimi Raikkonen was fourth after complaining of a lack of grip on his opening run on medium tyres, with the Finn improving on his second flying lap to set a 1:27.780. Raikkonen was also unhappy late in the session, saying he wasn't learning anything towards the end of his long run.
While Red Bull again struggled with reliability problems - having completed just 16 laps in total in FP1 - there was some encouraging pace shown by Daniil Kvyat. Running with a new nose, Kvyat was fifth fastest and less than 0.2s slower than Raikkonen. Max Verstappen was with 0.1s of Kvyat as well, albeit 1.1s slower than Hamilton's time.
Jenson Button was an encouraging seventh quickest for McLaren, running an upgraded MP4-30 which also includes a new livery. However, Button said on Thursday he is more interested in the gap to the front than the overall position, and he was 1.6s slower than Hamilton, leaving him half a second behind Verstappen.
Valtteri Bottas, Carlos Sainz and Felipe Massa rounded out the top ten, with Fernando Alonso in 11th the only other driver within two seconds of Hamilton's time.
The aforementioned reliability problems for Red Bull struck Daniel Ricciardo, confining him to the garage until the final five minutes of the session. While it had looked like he would not take part at all in FP2, Ricciardo completed four laps and managed to get himself up to 13th place with his one flying attempt.
A largely uneventful session was interrupted with a brief red flag period following a strange moment for Romain Grosjean. At full speed on the pit straight, Grosjean's engine cover exploded, showering debris over the circuit which caused the session to be stopped. The Lotus returned to the pits with the engine exposed but was able to continue running later in the session.
Unusually, Hamilton's time on medium tyres was slower than the best lap from FP1, with Rosberg's morning effort of 1:26.828 on the hard compound.
Click here for a look at the revised McLaren-Honda MP4-30 livery
Keep up to date with all the F1 news via Facebook and Twitter
| Pos | Driver | Team | Time | Laps |
|---|---|---|---|---|
| 01 | Lewis Hamilton | Mercedes | 1:26.852 | 26 |
| 02 | Sebastian Vettel | Ferrari | 1:27.260 | 37 |
| 03 | Nico Rosberg | Mercedes | 1:27.616 | 35 |
| 04 | Kimi Raikkonen | Ferrari | 1:27.780 | 36 |
| 05 | Daniil Kvyat | Red Bull | 1:27.943 | 25 |
| 06 | Max Verstappen | Toro Rosso | 1:28.017 | 32 |
| 07 | Jenson Button | McLaren | 1:28.494 | 31 |
| 08 | Valtteri Bottas | Williams | 1:28.525 | 39 |
| 09 | Carlos Sainz | Toro Rosso | 1:28.674 | 31 |
| 10 | Felipe Massa | Williams | 1:28.712 | 36 |
| 11 | Fernando Alonso | McLaren | 1:28.723 | 28 |
| 12 | Romain Grosjean | Lotus | 1:29.086 | 14 |
| 13 | Daniel Ricciardo | Red Bull | 1:29.098 | 4 |
| 14 | Pastor Maldonado | Lotus | 1:29.217 | 34 |
| 15 | Felipe Nasr | Sauber | 1:29.333 | 37 |
| 16 | Marcus Ericsson | Sauber | 1:29.361 | 34 |
| 17 | Nico Hulkenberg | Force India | 1:29.601 | 38 |
| 18 | Sergio Perez | Force India | 1:29.707 | 35 |
| 19 | Will Stevens | Manor | 1:31.929 | 30 |
| 20 | Roberto Merhi | Manor | 1:32.751 | 23 |
