Manor driver Rio Haryanto says he was pushing to the limit when he crashed out of the final day of the first test at the Circuit de Barcelona-Catalunya.
Haryanto had racked up a century of laps when he erred at Turn 4 and slid backwards into the gravel, with the rear of his Manor MRT05 making contact with the barriers on the outside of the corner.
The crash truncated Haryanto's running an hour and a half into the afternoon session and he ended the day in 11th place, ahead only of Fernando Alonso, who did not register a lap time.
"I was getting used to the car and finding the limits of the car so I went a little bit too hot today in Turn 4," he said.
"Unfortunately there was damage in the car so we couldn’t finish the afternoon session.
"It was a good morning session where we were able to follow our run plan and we did a lot of improvements."
Haryanto, who also spun off on his first day in the car on Wednesday, is optimistic that he can make progress across the course of next week's test.
"I’m getting more confident with the team, day by day, I’m still here learning, there’s still two more days next week for me so I’ll try to do my best, to learn as well as I can before the first Grand Prix," he concluded.