Fernando Alonso insists that he is ready to “write a new chapter” in McLaren’s history as he continues his preparations for the 2015 season.

Alonso was at the unveiling of McLaren’s new car on Thursday and the Spaniard admitted that he was excited and raring to go.

The Woking-based team are set for the start of a new era with engine supplier Honda, who have stepped in to try and help the team push the likes of Mercedes and Red Bull.

McLaren have used Mercedes engines since 1995 but have failed to win a race since 2012 and will begin testing their new car in Jerez on Sunday.

The 33-year-old also revealed that he has been working hard on his own physical fitness during the off-season and insists he has never felt better.

Alonso said: “My motivation could not be stronger for the new season. I’ve done a lot of training during the winter break, to reach my peak physical fitness, and I’ve been working hard in preparation for this new era of McLaren-Honda.

“I’ve never felt better, or more ready for a new season.”

The two-time world champion admitted that it will take some time to get to grips with a new car and working with a new team but he is relishing the challenge.

He added: “Of course, we’re prepared for a steep learning curve, but it’s clear to see that inside McLaren-Honda there’s total commitment, and a real change in feeling, as we start this new partnership.

“We’re all focused on the challenge ahead, and I feel extremely honoured to be part of a relationship that has shared so much history together.”