In order to step up preparations for the delayed start to the new F1 season on 5 July in Austria, Mercedes is completing two days of private test running at Silverstone this week.
The test is being conducted with the 2018-spec Mercedes W09, thus allowing for extended running outside of F1's testing restrictions for current cars.
Mercedes was eager to complete the test with its full race team to practice new protocols for F1's return following the outbreak of COVID-19, putting in place guidelines such as social distancing and wearing face masks.
Bottas was behind the wheel for Tuesday's running, and will hand over the W09 to teammate Lewis Hamilton on Wednesday.
"Today I think it was a very helpful day for the team," Bottas said. "Obviously everyone being out from racing and the garage environment for a long time, and there are many new regulations, and we need to be cautious with different things for health. It was good to practice that.
"I think we learned a lot during the day, how to do things more efficiently and make sure everyone is going to be safe once we eventually start racing.
"I loved to be back in a car, and now I can't wait for Austria, and to be back racing again very soon."
Mercedes F1 AMG team members