Haas working on Singapore upgrade

On the back of a strong start to the current campaign that delivered a decent haul of points, the outfit wasted little time in choosing to concentrate the new regulations coming in for next year.

While that has limited the scope for developments this season, Grosjean says there are still items coming through the system that should help lift performance later in the campaign.

"Developments are arriving, but they are very late," he said. "In manufacturing, these parts take much longer than we would like – and these are pieces that should have been here a long time ago.

"These are the type of things that we have to improve in-house.

"But there are two big updates that are supposed to be coming and should be quite good. They should be around Singapore time, I think."

Heavy car

As well as the push to find aerodynamic improvements, Grosjean says that further gains can be had from refining other aspects of the car, especially in terms of reducing weight.

"In qualifying, we know that the car is heavy and it is a problem," he explained. "On a circuit like [Silverstone], five kilogrammes is two tenths – plus I am much heavier than Esteban [Gutierrez] too – which does not help.

"The car now has a level of performance that is between 11th and 14th place in qualifying.

"But that's because there have not been the updates we must have and because we know there are things that could easily save lap time but have not yet been sorted."

Additional reporting by Benjamin Vinel