Sebastian Vettel says Mercedes is still clearly the favourite for British grand prix victory. On Friday – as is increasingly the case in 2015 – Ferrari looked poised to pose a real challenge to the dominant champions this weekend at Silverstone. Asked how much he can improve after practice, championship leader Lewis Hamilton said: 'Hopefully a lot, because if not then we are in trouble.' But although, after Austria, Ferrari chief Maurizio Arrivabene ordered his cars to practice on Fridays with more representative fuel loads, Vettel says there is another reason for the misleading results. 'We know from Friday to Saturday that Mercedes turns the engine up,' the German said. 'It...
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