Fernando Alonso says he has been encouraged by McLaren's progress across the post-race test in Austria as the squad bids to recover from two dismal races.
McLaren suffered two successive double retirements in Canada and Austria, with mechanical issues and penalties affecting both Alonso and Jenson Button, prior to the Spaniard being eliminated in the race by Kimi Raikkonen.
McLaren returned to action at the post-race test on Tuesday, with test and development driver Stoffel Vandoorne enjoying a trouble-free day.
Alonso took over testing duties on Wednesday and was able to drive with McLaren's updated nose box, which was introduced at the Austrian Grand Prix before being damaged in the opening lap crash.
Alonso was able to complete 104 laps of the Red Bull Ring and was seventh fastest of the nine competitors.
"Today was a positive day," he said. "The most important thing was to put some laps on the car after the problems we’ve had in the last couple of races.
"We managed to complete more than 100 laps, and, together with Stoffel’s laps yesterday, I think we finished the test with some good information.
"Now, we need to go back to the factory and analyse everything, but we definitely have a lot of data to go forward with. I’m pretty happy with how the test has gone."