Kimi Raikkonen set the fastest time of the first day of pre-season testing at Jerez, while Lewis Hamilton suffered a heavy crash for Mercedes and McLaren failed to run.
After much anticipation and a flurry of car launches in the pit lane on Tuesday morning, testing got under way with Hamilton heading out at 9am for Mercedes. There was very little in the way of running in the morning, as Raikkonen's Ferrari caused the first red flag of the day after 40 minutes on his opening lap.
Hamilton was comfortably completing a number of short runs and was fastest when his front wing failed at the end of the pit straight and sent him crashing in to the tyre barrier, prematurely ending Mercedes' running. However, with no damage to the chassis the team expects to be able to run again on Wednesday morning.
Raikkonen and Jean-Eric Vergne then started to emerge from the pits more regularly before Vergne stopped out on track at Turn 4. Once running resumed, Raikkonen went quickest with a 1:27.104 and went on to complete 31 laps across the day.
It was after 3pm before the Caterham first emerged – with Marcus Ericsson completing and installation lap – while in the final hour the Williams of Valtteri Bottas and Sebastian Vettel came out to give their new cars a first run.
Red Bull's delay was described by Adrian Newey as a “silly” problem but it at least managed three laps, with McLaren not running at all on the first day due to what the team cited as electrical issues.
Marussia's MR03 left the team's headquarters on Tuesday morning and is expected to arrive in Jerez overnight.
Full times from the opening day can be found by clicking HERE