It was another duel between the Mercedes teammates in Spain and for the fourth race in succession, Lewis Hamilton emerged victorious.
Valencian government has higher priorities than F1 - Alberto Fabra
Jean-Eric Vergne was third fastest in Formula One testing at Barcelona for the Scuderia Toro Rosso team.
Scuderia Toro Rosso driver Jean-Eric Vergne turned the most laps on the STR8 during testing thus far this year. Out of the 106 laps, his best time was a 1:23.366.
Pastor Maldonado took the Williams F1 Renault car out on the Circuit de Catalunya in the morning test session, and handed the FW35 over to Valtteri Bottas for the afternoon runs. Between the two, they logged 147 laps.
Mercedes Formula One driver Nico Rosberg laid down the unoffical fast lap on the opening day of testing on the Circuit de Catalunya in Barcelona, Spain. Second went to Lotus F1's Kimi Raikkonen.
Many expected the Spanish Grand Prix to start rotating between Circuit de Catalunya and the Valencia street circuit but it now turns out that Barcelona does not want to rotate each year.
Jack Evans, F1 correspondent