Wehrlein revealed that he started struggling after the Malaysian grand prix - he was 15th and last in Japan, retired at Austin and could only beat one car in Mexico.

Wehrlein believes that something has been wrong with his car, as he’s been forced to run a different setup to teammate Marcus Ericsson, but is hopeful new parts brought by Sauber will fix the problem.

“We changed many parts on my car because I was struggling in the last few races,” said the German.

“Marcus and me have always been very close in terms of set-up the whole season, and now we just need to set-up the car completely different, which is a bit strange.

“We hope that we can fix the issue. I’m just struggling with the balance of the car.

"The two cars behave very differently. In some high-speed corners I’m losing so much, and struggling a lot with oversteer.

“For me, it seems like there’s something going on at the rear of the car. It’s since Malaysia.

"Malaysia was a very strong race, I was close to Q2, I was very happy with the performance there but then after that it was different."

Wehrlein requested a change of chassis in an attempt to solve the problem but the team opted not to follow that route.

"We changed the floor in the last race, and now we’re changing some more aero parts on the back. We also have new suspension for this weekend," explained Wehrlein.

“I would have liked to have changed the chassis for this weekend, but unfortunately we couldn’t.

"We have one which is very old, and the other one had to be repaired twice because of Antonio [Giovinazzi] at the beginning of the season. This one, we don’t want to use.”

Wehrlein enjoyed one of his best races of 2016 at Interlagos:

“I hope for a similar race to last year. It was a very exciting race, and I was driving for quite a long time in the points.

"But I heard on Sunday it should be dry, so let’s see.”