New Zealand's Mitch Evans was the fastest rookie driver and broke into the top 10 on the third and final day of GP2 testing at the Jerez circuit in Southern Spain overnight (NZT).
The 18-year-old Aucklander, who was the youngest of 24 driver taking part in the pre-season testing, finished three days of wet and dry running with the eighth fastest time in the last session.
"We made good progress over the three days," Evans said. "I'm starting to feel more comfortable with the GP2 car and in a position where I know I can go faster. There's more potential yet - I just need more time in the car."
The 2012 GP3 champion has quickly adapted to the dramatic increase in power in GP2. Last season's turbocharged 2.0-litre GP3 engine produced 280hp; in contrast to the 612hp of the 40-litre V8 Renault in the Dallara GP2 chassis.
Evans covered 170 laps of the 4.4km circuit during the six hours of track time allowed each day and on Thursday was faster than Arden International teammate Johnny Cecotto Jnr in both the morning and afternoon runs for the first time.