Stefano Coletti set the fastest time in today's final Formula Renault 3.5 collective test at the Hungaroring
The Monegasque went top with seven minutes of the hour and 15 minute session remaining, demoting Magny-Cours winner Nathanael Berthon. Draco's Frenchman ended the afternoon 0.248 seconds off Coletti's effort of 1m34.377s.
Both drivers set their times using high-downforce settings. Tomorrow afternoon's 45 minute race will be held with a compulsory low-aero configuration (LAC). Despite today's success, Comtec driver Coletti - sixth in points and chasing his first win of the season - is not taking anything for granted.
"It is good, but we should have done better," said Coletti. "I had a yellow flag on my first flying lap, and then made some mistakes on my second one. With it being so hot here you should be setting your fastest time on your first lap, because the tyres lose performance very quickly.
"I spent the whole of the session on low-downforce and then fitted high at the end for new tyres. I have no idea what the difference in lap time is between the high and LAC, but for me it was around 0.3s."
British Formula 3 champion Daniel Ricciardo (Tech 1), who celebrated his 21st birthday yesterday, finished third and led the LAC runners.
Both Esteban Guerrieri in fourth and Coletti's Comtec team-mate Greg Mansell, fifth, had spells at the top. Argentinean three-time winner Guerrieri was quickest for ISR a third of the way into the session, while at the halfway mark Mansell was on top; a new tub since the previous round at Magny-Cours paying dividends.
The session was relatively incident free. Epsilon Euskadi's Keisuke Kunimoto briefly brought out the red flags after just 10 minutes, but was soon able to get going. Yellows flags were required when Renault Formula 1 reserve driver Jan Charouz pirouetted at Turn 13, and championship leader Mikhail Aleshin had a moment at Turn 1.
The 2015 Formula Renault 3.5 season will be notable for being the last with the French company's backing but also produced a worthy champion in Oliver Rowland. PETER MILLS evaluates this year's crop of drivers
Last year's field was extraordinary and hard to match, but the Formula Renault 3.5 grid will still have plenty of talent this season. Glenn Freeman runs through the field ahead of this weekend's season opener
Landing the Fortec seat that took rising star Robin Frijns to the 2012 FR3.5 title was already a good sign for Stoffel Vandoorne. Then McLaren took him under its wing. Peter Mills tells Vandoorne's story so far