Sebastian Vettel claimed the practice hat-trick in a shortened final practice for the Indian GP where he once again beat Mark Webber.
Practice was delayed by 20 minutes as the medical helicopter could not "operate due to poor visibility". However, once the haze had lifted a bit, the action got underway with a vengeance as the drivers had just 40 minutes to run.
Mark Webber set the early pace with a 1:27.879 but was soon pipped by Fernando Alonso by 0.073s while Felipe Massa slotted into second place. Webber, though, wasn't done and edged Alonso. The Ferraris engaged in a brief battle with the Aussie at the front while Nico Rosberg slotted into fourth place as the first 10 minutes drew to a close with 16 times on the board.
Shortly after Sergio Perez had a turn at the top of the timesheets before losing out to Alonso but that ended when Sebsatian Vettel headed out on the soft tyres, the first driver to do so. The German was quickest in all three sectors on his way to a 1:25.332. Webber tried to take the fight to his team-mate but his 1:25.892 was 0.560s down.
Fernando Alonso took third on his soft tyre run ahead of Nico Hulkenberg, Romain Grosjean and Felipe Massa. The double World Champ, though, was 0.773s down on Vettel's best.
And while their rivals were focused on qualifying runs, Red Bull had already switched to long distance work giving them more time to run the soft tyres for several laps. Vettel experience serious drop off as he went from 1:31 to 1:32 to a 1:34 by his 10th place on the same set of tyres.
The final few minutes saw everyone on heavier fuel load ensuring yet another P1 in an Indian GP practice session for Vettel.
01 Sebastian Vettel Red Bull 1:25.332 16 laps
02 Mark Webber Red Bull 1:25.892 +0.560 14 laps
03 Fernando Alonso Ferrari 1:26.105 +0.773 19 laps
04 Nico Hulkenberg Sauber 1:26.306 +0.974 17 laps
05 Romain Grosjean Lotus 1:26.350 +1.018 16 laps
06 Felipe Massa Ferrari 1:26.435 +1.103 20 laps
07 Paul di Resta Force India 1:26.438 +1.106 15 laps
08 Nico Rosberg Mercedes 1:26.441 +1.109 19 laps
09 Jenson Button McLaren 1:26.489 +1.157 15 laps
10 Lewis Hamilton Mercedes 1:26.557 +1.225 17 laps
11 Kimi Raikkonen Lotus 1:26.635 +1.303 14 laps
12 Pastor Maldonado Williams 1:26.641 +1.309 13 laps
13 Sergio Perez McLaren 1:26.737 +1.405 13 laps
14 Adrian Sutil Force India 1:26.847 +1.515 17 laps
15 Jean-Eric Vergne Toro Rosso 1:26.876 +1.544 17 laps
16 Valtteri Bottas Williams 1:26.883 +1.551 15 laps
17 Daniel Ricciardo Toro Rosso 1:27.259 +1.927 18 laps
18 Charles Pic Caterham 1:27.941 +2.609 18 laps
19 Esteban Gutierrez Sauber 1:28.019 +2.687 15 laps
20 Giedo van der Garde Caterham 1:28.498 +3.166 16 laps
21 Max Chilton Marussia 1:29.094 +3.762 11 laps
22 Jules Bianchi Marussia 1:29.169 +3.837 13 laps
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