Paul di Resta completed a busy day of running for Williams at the Hungaroring on Wednesday as the team continues its driver evaluation for 2018.
Williams current reserve driver, who subbed for a sick Felipe Massa at the Hungarian GP this summer, took over from Robert Kubica on board the team's 2014-spec FW36.
The test followed an initial run by both drivers which took place last week at Silverstone.
Kubica and di Resta are in contention for a seat in 2018 alongside Lance Stroll at the Grove-based outfit, but incumbent Felipe Massa also remains in the frame for the drive.
As with Kubica the day before, Williams did not provide any details about the test or the evaluation process, simply describing the Scot's run in Hungary as "a busy day".
"These tests are part of the ongoing due diligence work regarding our 2018 driver line-up, but the team is in no rush to confirm plans ahead of 2018 whilst it completes its internal evaluations," the team said.
While he awaits news on his future, di Resta already has one drive sorted out for 2018 as he has been recruited by Zak Brown's United Autosports outfit to race in the Rolex 24 at Daytona next January.
The Scot has been drafted in to drive one of the team's Ligier JS p217s in the IMSA championship race.
"I'm really looking forward to racing at Daytona and with United Autosports," said di Resta.
"I've never done a 24-hour race and never raced a prototype so it's all new to me, but I'm looking forward to the challenge.
"Entering a 24-hour race is something I've looked at doing before and when Zak asked, I jumped at the opportunity."
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