Despite missing track time on both days of testing, Red Bull's Andy Damerum says they still obtained "good data".
Sebastien Buemi was in action on the opening day at the Barcelona circuit before handing the RB10 over to Sebastian Vettel for Day Two.
The German's running, though, got off to a delayed start due to overnight work solving the gearbox issues that halted Buemi's test the previous day.
Vettel, who also broke down in the pit lane, still managed 72 laps, finishing down in seventh place, 3.102s behind pace-setter Pastor Maldonado.
"It's obviously not ideal to have a problem that costs you time on both days, but the problem we had was such that it needed a lot of time...
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