Testing continues on Thursday with a number of teams making changes for the third day of running at Catalunya.
Mark Webber, Jenson Button, Romain Grosjean, Jean-Eric Vergne, Giedo van der Garde and Luiz Razia all make their first appearances of the week while there will be plenty of attention on the Force India garage as Adrian Sutil makes his return to F1 for a day of running with his former team.
Fernando Alonso will complete his three days of running with Ferrari while Williams will split track time between its two drivers – Pastor Maldonado having the morning session before Valtteri Bottas takes over in the afternoon.
Barcelona test line-up - Thursday 21 February:
Australia Red Bull-Renault
Germany Force India-Mercedes
Venezuela Williams-Renault AM
Finland Williams-Renault PM
France Toro Rosso-Ferrari
Giedo van der Garde