Current points leader Esteban Gutierrez has started this weekend's Valencia round off by topping the times in this afternoon's free practice session. The Mexican managed a best lap of 1m59.459sec to leave him 0.266sec clear of ART teammate Alexander Rossi, with Carlin's Dean Smith just behind the American.
Formula 3 Euro Series regular Roberto Merhi, who is making his GP3 debut, managed fourth quickest for Atech, ahead of Manor's James Jakes and MW Arden's Michael Christensen.
The only moment of drama in an otherwise uneventful session came in the final minutes, when Addax's Mirko Bortolotti came to a stop in the middle of the main straight. The Italian's stricken car was removed under yellows.