Lewis Hamilton continued to top the timesheets at the Hungaroring in the second free practice session.
The top drivers traded fastest times during the opening half an hour. Hamilton went quickest early on in his McLaren, but was soon displaced by Felipe Massa for Ferrari. Sebastian Vettel then moved ahead in his Red Bull, before Jenson Button and then Fernando Alonso went quickest.
Button soon went back into P1, as Massa spun at Turn 12 after losing the rear of his car under breaking. Alonso returned to top spot, holding the position after half an hour.
The Spaniard then switched to the super-soft tyre and lowered the benchmark further at the halfway point in the session. The McLarens then came out on the super-softs, with Hamilton replacing Alonso in first place.
With the teams all concentrating on heavier fuel runs for the remainder of the session Hamilton's benchmark remained unbeaten, with Alonso remaining in second and Button in third. Mark Webber was fourth, shading teammate Vettel by four hundredths of a second.
Massa, Nico Rosberg and Michael Schumacher filled positions six to eight, just as they did during the morning session. Force India showed well with Paul di Resta and Adrian Sutil completing the top ten.
At the back of the field, Daniel Ricciardo was nearly half a second faster than HRT teammate Vitantonio Liuzzi.