Jenson Button has made an impressive start to his career with new team British American Racing.

The 22 year old completed 52 laps in his opening testing session at Jerez in Southern Spain on Friday.

He was then forced off with an engine problem but will be in action again on Saturday before resuming testing in the New Year.

"I had a good first day with the team," he said.

"I was driving this year's car so, although I didn't get a taste of what I can expect next year, it felt well-balanced and good to drive.

"It wasn't about how quick I am, it was about getting to grips with everything. I've settled in well and I feel part of the team already."

Shuhei Nakamoto, BAR's race and test team manager, said: "Jenson did a good job on his first day with a car, engine and tyres that are new to him.

"We are looking forward to the first test of the new engine and chassis in the New Year."