Felipe Nasr has confirmed he will get a new chassis for this weekend’s Russian Grand Prix after complaining that his Sauber C35 was handling differently to Marcus Ericsson's.

The Brazilian has been experiencing a challenging start to his sophomore Formula One campaign, with his Swedish team-mate outqualifying him in all three opening races. Ericsson also finished ahead on the two occasions when both cars made it to the end.

“I can confirm I do get a new chassis here," Nasr said in Thursday’s FIA press conference in Sochi.

“I think it's a sensible step from the team, that we're looking further to discover these problems, these handling issues that I'm having.

“Since we put the car on track in Australia we've been having this very strange behaviour, and it's very unpredictable to drive it.”

Pressed to reveal whether Sauber, whose financial situation remains quite precarious, had found out what was wrong with his old chassis, Nasr replied: “Not that they could identify.

“There are so many places to look at, so for this we need the resources, the time.

“The cars hadn't been back at the factory, so it was really good to have a full look to every detail if we could, and I'm sure they're doing all they can with all the things we have in our hands.”

Sauber team principal Monisha Kaltenborn recently admitted that the Swiss outfit’s current struggles have been delaying upgrades to the 2016-spec C35.

Nasr had one of his better race results of 2015 in Sochi, with the 23-year-old claiming P6 around the former Winter Olympic Games venue.

Romain Grosjean column: Haas brought back down to earth

Chris Medland's 2016 Russian Grand Prix preview

F1 technical - How does ERS deployment work?

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

Julien Billiotte

Recent Posts

A late season Le Mans win for F1's all-rounders

Civil unrest in France in 1968 had forced the organizers of the 36th running of…

3 hours ago

Alonso commits to Aston Martin as 2027 line-up is confirmed

Fernando Alonso will remain with Aston Martin for the 2027 Formula 1 season, ending months…

4 hours ago

‘Full confidence’: Ferrari responds to Vasseur-Horner speculation

Ferrari has suddenly moved to shut down speculation surrounding Fred Vasseur’s future, insisting the Frenchman…

5 hours ago

Williams drivers positive on new package, but 'we need more'

Carlos Sainz believes Williams’ heavily revised FW48 has finally given the team something it has…

6 hours ago

Vasseur responds to Leclerc's fears with Ferrari upgrade promise

Ferrari is ready to answer Charles Leclerc’s growing concerns about the team’s development trajectory, with…

7 hours ago

Montoya defends Colapinto: ‘I admire people who try’

Former F1 driver Juan Pablo Montoya has offered Franco Colapinto a measure of redemption after…

8 hours ago