Vettel led a Red Bull one-two, setting a benchmark time of 1 minute 44.249, over half a second clear of teammateu00a0Mark Webber.

Mercedes were Red Bull’s closest challengers with Nico Rosberg setting the third quickest time, a whole second off the pace, followed by teammate Lewis Hamilton — who topped the first session — as the Silver Arrows showed improved form on the high-downforce track after a slight dip in Belgium
and Italy.