Stoffel Vandoorne will race a different chassis at this weekend’s Hungarian Grand Prix, returning to an old one after struggling in the British and German GPs.
The McLaren driver was off the pace the past two grands prix, revealing his chassis “didn’t feel right from the start” of the British Grand Prix.
The problem persisted into Germany where he says whatever McLaren did, he “still had the same problem.”
Unable to find the root cause, McLaren have instead supplied him with a replacement chassis for Hungary.
“We have swapped the chassis,” Vandoorne said.
“It’s not a brand new one, it’s one we’ve used before but that’s not a problem at all.
“The team put in a lot of effort to try and understand the problems we had. At the moment, we don’t know (what caused the issue).
“There’s no specific area we can say ‘okay that’s what’s causing it’ and tomorrow (Friday) we have a couple of tests in place across the cars to further understand. Hopefully tomorrow we can spot nothing as that means the two cars are going to be good.
“I was pushing the team for it. Obviously what we did over the past couple of races we started to change a lot of parts and there came a point where we nearly did everything we could and that was one of the last pieces remaining.
“It’s not easy for the team to do that, especially when it’s a back-to-back race, but they’ve managed it.”