Hamilton leads Rosberg in Hungarian GP FP1

The three-time world champion clocked a 1m21.347s on the super-softs, nearly seven tenths quicker than his 2015 pole time at the Hungaroring, which has been resurfaced and the kerbs re-profiled.

His Mercedes team-mate Nico Rosberg was second quickest, two tenths off the pace with Sebastian Vettel third, 1.6s adrift.

Vettel's time was also set on the super-softs, but the rubber was not in great shape after a spin on the previous lap at Turn 12.

Damp patches after overnight rain meant intermediate tyres were required for installation laps.

There was a lull in the action before Valtteri Bottas deemed it dry enough to bolt on slicks and headed out to set the first flying lap of the day - a 1m28.748s.

As the track continued to dry, the times tumbled with Hamilton and Rosberg trading fastest laps on the softs.

Rosberg, who on Friday morning announced a contract extension until the end of 2018, won the early battle with a 1m22.801s, 0.277s clear of Hamilton and then went 1.2s quicker when he bolted on the super-softs.

Hamilton responded with a little over half an hour to go, moving 0.237s clear and that was good enough to finish the session top of the pile.

Kimi Raikkonen used super-softs in the closing stages to take fourth, a tenth adrift of team-mate Vettel.

Red Bull's Daniel Ricciardo was fifth quickest, three tenths clear of team-mate Max Verstappen, with both drivers only running the soft.

McLaren duo Fernando Alonso and Jenson Button - who had a number of off-track excursions between them - were seventh and eighth respectively with Romain Grosjean and Sergio Perez completing the top 10.

Felipe Massa was the leading Williams in 12th, two tenths and one place ahead of Valtteri Bottas.

Sauber, its change of ownership announced earlier this week, ran a new rear wing in what is its first major update of the season, with Marcus Ericsson 15th and Felipe Nasr 17th.

Charles Leclerc was 16th and 1.2s behind regular Haas driver Grosjean, in his second successive free practice session in place of Esteban Gutierrez.

Renault reserve driver Esteban Ocon outpaced Jolyon Palmer, who spent much of the session in the garage and managed just a handful of laps.