Austrian Grand Prix victor Nico Rosberg clocked the quickest time for Mercedes on the final day of 2015 testing at the Red Bull Ring on Wednesday.
Rosberg recovered from a gearbox failure and posted a time of 1:09.113 on a largely dry day at the circuit to ensure that Mercedes again ended up on top of the pile.
His time was 0.8s quicker than nearest rival, Ferrari’s Esteban Gutiérrez, as the drivers enjoyed a fairly trouble-free day of running.
Valtteri Bottas was the only driver not to pass a century of laps but nonetheless ended in third place for Williams.
DTM champion Marco Wittmann received his reward test from BMW for winning last year’s crown in the German series and completed over 150 laps in the Toro Rosso STR10.
Wittmann was originally scheduled to conduct a private test for the squad at Imola earlier this year but that was cancelled due to wet weather.
Tuesday pace setter Pascal Wehrlein switched from Mercedes to Force India and piloted the squad’s 2015 car for the first time, ending fifth fastest.
Lotus reserve driver Jolyon Palmer received another outing in the E23 Hybrid and was sixth, though brought out the red flags at the end of the day after stopping on track.
Fernando Alonso racked up over 100 laps as McLaren enjoyed a second day of substantial running with the Honda-powered MP4-30.
The Spaniard was able to gather more data from the team's new nose package, which made its first appearance at last weekend's race.
Red Bull's Daniel Ricciardo caused a brief red flag when he stopped at the pit entry, while Felipe Nasr completed the runners for Sauber.