Nico Rosberg moved to the front of the time sheets during the second practice session for the Hungarian Grand Prix as Mercedes team-mate Lewis Hamilton crashed out.
Rosberg and Hamilton were separated by just 0.001s in the Briton’s favour on the Soft tyres when he clipped the entry kerb on the outside of Turn 11 and spun into the barriers.
Hamilton suffered a side impact and though he was able to crawl back to the garage, his session was truncated after only four laps.
Mercedes confirmed that his W07 Hybrid needed to be fully stripped and checked after the impact with the barriers.
Rosberg subsequently went quicker on the Super Soft tyres, ending the session with a time of 1:20.435, 0.595s quicker than 2014 victor Daniel Ricciardo.
Sebastian Vettel was the lead Ferrari driver in third place, 0.913s behind Rosberg, having clocked his best time around half an hour after his rivals.
Max Verstappen was fourth best for Red Bull, with Hamilton’s initial time on Soft tyres still sufficiently quick enough for fifth spot, in front of Kimi Räikkönen.
Fernando Alonso initially lost time as Honda replaced his power unit as a precaution but he recovered to finish seventh, ahead of team-mate Jenson Button.
Force India’s Nico Hülkenberg and Sergio Pérez completed the top 10, in front of Haas’ Esteban Gutiérrez.
Felipe Massa and Valtteri Bottas were only 12th and 14th for Williams, split by Carlos Sainz Jr., who spun at Turn 2 before stopping at Turn 1 amid complaints about the rear of his Toro Rosso.
Romain Grosjean was 15th, ahead of Daniil Kvyat and Kevin Magnussen, who spun at Turn 2.
Sauber took 18th and 20th with Marcus Ericsson half a second clear of Felipe Nasr, who pulled to the side of the circuit at Turn 2.
They were split by Renault’s Jolyon Palmer, who spent the bulk of the session in the garage before setting his times late on.
Manor finished at the foot of the standings, with Pascal Wehrlein three-tenths of a second quicker than Rio Haryanto, who was 3.830s behind leader Rosberg.