Sebastian Vettel topped the final test day of the 2017 Formula 1 season, while 2018 Williams hopeful Robert Kubica ended the day in seventh.
Vettel set a 1m37.551s on Pirelli’s brand-new hypersoft tyres to end the session quickest.
Valtteri Bottas was second quickest, 0.939s adrift of Vettel’s benchmark. Max Verstappen completed the top three for Red Bull Racing.
The Force India duo of Sergio Perez and Esteban Ocon were fourth and fifth fastest, with Carlos Sainz Jr completing the top six for Renault.
Robert Kubica, who is been evaluated by Williams for a 2018 seat, was seventh fastest, just under two seconds slower than Vettel.
Kubica ran for the final couple of hours after Sergey Sirotkin drove the FW10 in the morning, clocking the 10th fastest time; a 1m39.947s.
Stoffel Vandoorne and Kevin Magnussen set the eighth and ninth best times of the day. The former found the same barrier as Fernando Alonso did on Tuesday.
Formula 2 champion Charles Leclerc set more laps than any other driver with 148 laps under his belt on the day Sauber announced a multi-year technical partnership with Alfa Romeo. He also set the 11th quickest time.
European Formula 3 champion Lando Norris, who will test F2 machinery later in the week, was 12th quickest ahead of Toro Rosso drivers Brendon Hartley and Pierre Gasly.
