Sebastian Vettel led a Ferrari 1-2 during the opening practice session for the Spanish Grand Prix at the Circuit de Barcelona-Catalunya.
Vettel and team-mate Kimi Räikkönen both utilised Pirelli’s Soft compound tyres to finish at the head of the pack, with the German quickest on a 1:23.951, 0.138s clear of Räikkönen.
Vettel’s only drama came at the end of the session when he had to be wheeled back up the pit lane as the red light came on narrowly before he attempted to re-joined the circuit.
Mercedes drivers Nico Rosberg and Lewis Hamilton had initially traded times on the Medium compound before they were overhauled by their Ferrari rivals.
Rosberg and Hamilton nonetheless finished the session third and fourth, half a second adrift of Vettel’s leading time.
Daniel Ricciardo was fifth for Red Bull, 0.2s ahead of new team-mate Max Verstappen, who received his first run out in the RB12.
Valtteri Bottas placed seventh for Williams, with Carlos Sainz Jr. in eighth and Felipe Massa in ninth, having recovered from a spin at Turn 5.
Fernando Alonso completed the top 10 for McLaren at his home event, in front of Renault’s Kevin Magnussen and Toro Rosso returnee Daniil Kvyat.
Force India trialled its upgrade package with Nico Hülkenberg in 13th, though team-mate Sergio Pérez spent much of the session in the garage after smoke trailed from his VJM09 early on.
Felipe Nasr placed 15th for Sauber, ahead of Haas pair Romain Grosjean and Esteban Gutiérrez, the Frenchman labelling his VF-16 a “disaster” at low speed.
Marcus Ericsson was 18th, with Jenson Button a lowly 19th for McLaren, in front of Manor pair Pascal Wehrlein and Rio Haryanto.
Renault test driver Esteban Ocon received his first outing for the team but completed only six non-timed laps as a puncture, and then a battery issue, scuppered his run plan.