Hungarian GP: Nico Rosberg leads practice, Lewis Hamilton crashes

After topping the timesheet in practice one at the Hungaroring, Hamilton was on his fourth lap of the afternoon when he lost control of his car approaching Turn 11, sending him into a high-speed slide across the expansive run-off area before slamming into a tyre wall left-side on.

The 31-year-old eventually managed to extricate himself and slowly trundled back to the garage, with Mercedes confirming his session was over as the car needed to be stripped and checked for internal damage.

With the safety data recorder being triggered given the force of the impact, Hamilton was also required to attend the track medical centre for a check up, but was given the all clear.

Although Hamilton was top of the timesheet at that point 20 minutes into the session, which was red-flagged for repairs to the barrier, it was only based on a run on soft tyres - on which the Mercedes had been a mere 0.001s apart.

That ensured Hamilton was swiftly deposed by Rosberg on the super-softs when the session restarted, with the championship leader posting a time of 1m20.435s, almost 1.6s quicker than Hamilton's pole lap from last year.

Rosberg held a clear advantage, with Red Bull's Daniel Ricciardo 0.595s adrift and Sebastian Vettel in his Ferrari 0.913s off the pace, followed by the second Red Bull of Max Verstappen who ended 1.335s down.

Hamilton's time was still good enough for fifth, almost a tenth of a second up on Ferrari's Kimi Raikkonen, followed by McLaren duo Fernando Alonso and Jenson Button.

McLaren changed Alonso's power unit in between sessions after discovering what Honda claimed was "an anomaly in Fernando's data during FP1".

It resulted in the entire system being swapped, but with no new components introduced given the replacement contained the most recent updates on the ERS and internal combustion engine, and was used in four previous races.

Force India pair Nico Hulkenberg and Sergio Perez completed the top 10, both just over two seconds down.

Williams, with its cars possessing a new floor and with three different variations of front wing being assessed as per the recent test at Silverstone, continued to struggle with Felipe Massa and Valtteri Bottas down in 12th and 14th.

Bottas is also under investigation for failing to keep to the right of the pitlane-entry bollard at one point, with Toro Rosso's Carlos Sainz Jr also being looked at for crossing the line at the pit entry.

Sainz and Sauber's Felipe Nasr both had to park with late mechanical problems.

Fuel pressure issues consigned Renault's Jolyon Palmer to the garage for most of the session before a late run elevated him up to 19th.

Many drivers exceeded the track limits at Turn 4 - one of the two corners at this circuit where electronic kerb monitoring systems have been placed - and will need to be mindful of such an infraction during qualifying and the race.

PRACTICE TWO TIMES