2015 F1 testing

Felipe Massa, Williams, Circuit de Catalunya, 2015Felipe Massa put Williams on top of the times for the first time this year as the final four-day test began at the Circuit de Catalunya.

His best effort was a 1?23.500, over half a second quicker than the fastest times set in last week?s test by Romain Grosjean.

Second-fastest driver Marcus Ericsson was the only driver to complete more laps than Massa, completing 122 in his Sauber.

Lewis Hamilton?s early lap on medium tyres was quick enough for him to end the test third-fastest. However his running was brought to a premature conclusion after Mercedes diagnosed a problem with their MGU-K.

A hydraulic fault halted Jenson Button?s progress in the McLaren after a mere seven laps.

Daniil Kvyat?s day got off to an unpromising start when his car stopped within the first quarter of an hour. He later returned to the track and set the fourth-fastest time.

A substantially revised Toro Rosso STR10 also appeared in the hands of Carlos Sainz Jnr, but he was confined to the garage during the middle of the day due to a problem with his car.

2015 F1 season

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