Fernando Alonso set the fastest time on the third day of the test in Barcelona, with a best of 1m21.875s, slightly slower than the fastest lap on Wednesday of 1m21.848s, set by Sergio Perez in his McLaren. Alonso completed 97 laps in his Ferrari and was three-tenths clear of the Sauber of Nico Hülkenberg, who did 91 laps and clocked a 1m22.160s. Romain Grsojean was third fastest in the Lotus after 119 laps, with a best of 1m22.188s, just a fraction slower than Hülkenberg. Fourth fastest was Nico Rosberg who clocked 108 laps in his Mercedes, with a best of 1m22.611s, which was just faster than Pastor Maldonado, who lapped the new Williams in 1m22.675s after 79 laps. The team also ran Valtteri Bottas in the morning and he set a 1m22.826s after 68 laps.
Jenson Button was seventh overall in the McLaren, with a lap of 1m22.840s after 71 laps, while Adrian Sutil made his F1 comeback with Force India and did a 1m22.877s after 78 laps. Mark Webber was next with a 1m23.024s in his Red Bull, which completed 108 laps during the day. Jean-Eric Vergne was a busy boy as well and completed 106 laps with a best of 1m23.366s in his Toro Rosso, while Max Chilton completed 58 laps in the Marussia to set a best of 1m25.690s and Giedo Van Der Garde was behind him in the Caterham, with a best lap of 1m26.177s after 93 laps.