Kimi Antonelli rebounded from heartbreak in Barcelona when he topped the timesheets in first and second practice for the Austrian Formula One Grand Prix on Friday.
Championship leader Antonelli clocked a best time of 1 minute 7.014 seconds in the second session on the 4,321-kilometres Red Bull Ring.
In first practice he pipped team-mate George Russell by four-hundredths of a second in sweltering conditions and in the second session, he was 0.237 seconds quicker that McLaren's Oscar Piastri.
Max Verstappen was in an upgraded car from home team Red Bull but there appeared to be problems with his seat at the start of the second session. He was fourth fastest in both sessions.
Lewis Hamilton, who had claimed his first win in a Ferrari at the Barcelona-Catalunya race a fortnight ago, twice locked up his tyres to place fifth in his two outings.
Antonelli was stopped by a technical problem late in the Barcelona race which ended the Italian teenager's run of five straight victories.
Antonelli tops the championship 41 points ahead of Hamilton and 50 ahead of Russell.
Sergio Perez stopped on the track in his Cadillac in both first and second practice. The Mexican said the problem appeared to be same.
First practice was red flagged for a time, while his car again ground to a halt early in the second session when a virtual safety car phase ensued.
Reigning champion Lando Norris could only place seventh in first practice, more than a second behind Antonelli. Due to an alleged hydraulics problem with his McLaren, Norris could only compete in the later stages of the session.
He improved to third quickest in second training.
Saturday qualifying is expected to be even hotter, with Europe's heatwave possibly intensifying for Sunday's race.
