Austrian Grand Prix winner Nico Rosberg took over at the helm of the Mercedes W06 on Wednesday and promptly set the fastest time of the week in the two-day, post-race test.
The German completed 117 laps and set a best time of 1:09.113, which was easily fastest of the week. Times improved two seconds from Tuesday on a day where no rain interrupted running.
Beyond the veterans, Pascal Wehrlein switched from Mercedes to Force India and clocked 132 laps.
Marco Wittman, the DTM front-runner, turned in the most laps of the day in his F1 debut with Scuderia Toro Rosso. He completed 158 laps and ended fourth with a best time of 1:10.103.
After stopping at pit in late in the afternoon, Daniel Ricciardo brought out the day’s only red flag.
Times are below: