Mercedes was hit by fuel system issues on the opening day of testing as Pascal Wehrlein received a surprise call-up to the team.

Lewis Hamilton was due to drive on Thursday but withdrew after ten laps due to a fever, with Mercedes opting to put Wehrlein in the car despite the reserve driver already driving for Force India. However, a fuel system issue limited Wehrlein to just 48 laps despite having first gone out in the W05 before the lunch break.

Wehrlein admits the call-up was a surprise, but says he enjoyed the opportunity to drive two different cars on the same day even though Mercedes hit reliability trouble.

“For sure I was quite surprised in the morning when I got the information to drive the Mercedes but I think to drive two cars in one day was amazing and I was happy,” Wehrlein said. “The day was good, we had a few problems in the afternoon with the car and I lost a bit of time, so I only had three runs in the Mercedes which wasn't that much but the time I had I enjoyed, as well as the time in the Force India.”

Nico Rosberg is set to take over the W05 on Friday, with Wehrlein saying he believes a neck problem has subsided.

Full times and day one of the second test as it happened

Click here for the gallery from day one 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

Mekies: ‘We all agree’ F1 must bring back flat-out qualifying

Red Bull team principal Laurent Mekies has made it clear: Formula 1 must rediscover the…

9 hours ago

‘Rusty, me?’: Perez fires back at Andretti’s Cadillac claim

Sergio Perez isn’t taking lightly the suggestion that his return to Formula 1 with Cadillac…

10 hours ago

Formula 1’s heartfelt gift to new dad Fernando Alonso

While Aston Martin’s F1 car is currently giving Fernando Alonso some massive engine vibrations and…

11 hours ago

Hill says unhappy Verstappen ‘should stop and do something else’

For a driver who has spent years bending F1 to his will, Max Verstappen suddenly…

13 hours ago

‘He’s up against it’: Brundle fears Sainz facing career dead end in F1

For Carlos Sainz, what was meant to be a strong second season at Williams is…

14 hours ago

Alonso’s brutal verdict: ‘High-speed corners now charging stations’

Two-time world champion Fernando Alonso has delivered another withering verdict on Formula 1’s 2026 regulations…

15 hours ago