Honda is working to improve the quality of its components to help with reliability ahead of the first race of the season in Australia.

An encouraging start to the second test on Thursday was brought to an abrupt end when Honda discovered a faulty MGU-K seal, with a replacement part needing to be produced. Speaking exclusively to F1i, Honda motorsport chief Yasuhisa Arai explained that the quality of certain parts needs to be improved over the coming weeks.

“It’s a quality issue, not design related,” Arai said. “So our design is part of a very tight package for aerodynamics and it’s a very good design, but some sealing parts have some not so good quality so that’s the seal problem we had. Yesterday we got another part and put it on the car and made it run very well.”

When asked about the new part that was introduced on Friday, Arai said it was not a permanent replacement but just an adjustment to allow the team continue testing.

“It’s not the final part, it’s just a temporary fix. We’re still investigating how we can improve the quality with the target of Australia.”

McLaren's running on Saturday was limited to just 12 laps in the morning session after Button stopped on track when the engine shut down.

Click here for live coverage of testing from Barcelona

Feature: A closer look at the McLaren MP4-30

Click here for the gallery from day three of the second test

Keep up to date with all the F1 news via Facebook and Twitter

Andrew Lewin

Andrew first became a fan of Formula 1 during the time when Michael Schumacher and Damon Hill were stepping into the limelight after the era of Alain Prost, Nigel Mansell and Aryton Senna. He's been addicted ever since, and has been writing about the sport now for nearly a quarter of a century for a number of online news sites. He's also written professionally about GP2 (now Formula 2), GP3, IndyCar, World Rally Championship, MotoGP and NASCAR. In his other professional life, Andrew is a freelance writer, social media consultant, web developer/programmer, and digital specialist in the fields of accessibility, usability, IA, online communities and public sector procurement. He worked for many years in magazine production at Bauer Media, and for over a decade he was part of the digital media team at the UK government's communications department. Born and raised in Essex, Andrew currently lives and works in south-west London.

Recent Posts

Horner’s staggering payday after Red Bull exit revealed

Christian Horner lost his Red Bull empire during the summer of 2025, but it has…

7 hours ago

Vowles reveals Williams’ painful trade-off in bid to fix 2027

Williams boss James Vowles has offered a remarkably candid explanation for his team’s miserable 2026…

8 hours ago

Bottas completes epic 419km ride to Singapore

Valtteri Bottas has officially arrived in Singapore – although most F1 drivers would probably have…

10 hours ago

Marko hits back at Horner over explosive Verstappen claim

Christian Horner’s forthcoming autobiography has already reopened old wounds at Red Bull, and Helmut Marko…

11 hours ago

Wolff confirms Singapore engine penalty nightmare for Russell

Mercedes team principal Toto Wolff has confirmed that George Russell will be consigned to the…

13 hours ago

Brundle says FIA decision to reset Bahrain GP grid ‘smart and fair’

Sky Sports F1’s Martin Brundle has offered an incisive take on the bizarre formation lap…

14 hours ago