Rodin Motorsport's championship leader Alex Ninovic set the fastest lap of the week so far so far with a 1m38.238s in Free Practice One at the Hungaroring.
The Australian was just over a tenth clear of Elite Motorsport's Will Macintyre, who led the times late on. It wasn't a straightforward 45-minutes for Ninovic though, after a crash at turn 11 brought the session to a slightly premature halt, with the driver emerging unscathed.
Ninovic's best lap was just under a tenth of a second quicker than the best time yesterday, registered by his fellow Australian teammate Gianmarco Pradel.
Hitech TGR's Keanu Al Azhari was third quickest in the session, 0.025s behind Macintyre and 0.051s clear of Pradel, who topped the times early on, with JHR Developments' Noah Lisle completing the top-five.
Xcel Motorsport's Patrick Heuzenroeder ensured all four Australians on the grid were inside the top-six, and was just 0.038s behind countryman Lisle, and a tenth ahead of Argenti with Prema's Reza Seewooruthun.
Deagen Fairclough was eighth quickest for Hitech TGR, 0.037s behind Seewooruthun and four thousandths ahead of VRD Racing's Hugo Schwarze. Rodin's Abbi Pulling completed a top-10 covered by 0.846s.
The second practice session is due to commence at 16.59 local time (15.59 UK).
GB3 Championship, partnered by the BRDC, Hungaroring Free Practice One result:
1. Alex Ninovic, Rodin Motorsport, 1m38.238s
2. Will Macintyre, Elite Motorsport, +0.105s
3. Keanu Al Azhari, Hitech TGR, +0.130s
4. Gianmarco Pradel, Rodin Motorsport, +0.181s
5. Noah Lisle, JHR Developments, +0.440s
6. Patrick Heuzenroeder, Xcel Motorsport, +0.478s
7. Reza Seewooruthun, Argenti with Prema, +0.624s
8. Deagen Fairclough, Hitech TGR, +0.661s
9. Hugo Schwarze, VRD Racing, +0.665s
10. Abbi Pulling, Rodin Motorsport, +0.846s
11. Flynn Jackes, Elite Motorsport, +1.080s
12. Jack Sherwood, Xcel Motorsport, +1.095s
13. Kai Daryanani, JHR Developments, +1.266s
14. Yuanpu Cui, Argenti with Prema, +2.085s
15. Bianca Bustamante, Elite Motorsport, +2.159s
16. Lucas Fluxa, Argenti with Prema, no time set