Mercedes are fastest in day three of testing in Barcelona. Valtteri Bottas was the first driver to break the 1min20 barrier setting an impressive time of 1m19.705s. This time was set in the morning session on ultra soft tyres.
Sebastian Vettel in the Ferrari was the only other driver to break the 1.20 barrier, setting his personal best of 1m19.952s in the afternoon session. This time, however was set using the soft tyres, a slightly slower compound.
Hamilton did a full race length stint in the afternoon on the medium compound tyres, changing to soft during a pit stop. He achieved a time of 1m22.175s following the pitstop.
The test day was called to a halt following the Ferrari driven by Vettel coming to a halt on the state / finish straight.