Rosberg ‘surprised’ by gap to rivals

Mercedes were comfortably ahead of the chasing pack in Friday's first practice with Lewis Hamilton's pace-setting time 1.5s up on Sebastian Vettel's time.

And although the Ferrari driver closed the gap in FP2 on the soft tires, he was still 0.759s down on the British racer.

"Yes, we are surprised," Rosberg said. "We look really quick here at the moment, I am pleased with that."

But why is Rosberg surprised. Mercedes used up all 7 remaining 2015 engine tokens for this race to ensure they embarrass Ferrari.