Red Bull’s Christian Horner has suggested that the 50% electrical contribution is too big, and that his team’s early simulations suggest that drivers will have to change down on the straight, while Max Verstappen has said the plans look "pretty terrible".
Vasseur says that it’s difficult for anyone to produce accurate speed trace figures because the chassis and tyre rules for 2026 have not yet been fixed, so teams cannot properly factor in the impact of drag and so on.
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However, he says that the subject should be properly studied and a call made on whether or not the 2026 power unit regulations should be tweaked.
"We are supposed to have a working group to be all on the same page about what could be the outcome of the current regulations,” said Vasseur.
“We have to make some assumptions, because it's not really clear about the tyre grip, aero downforce, drag. You can do whatever you want today, if you say that the grip of the tyres is decreasing by 30%.
“It means that we have to agree on the strategy. Probably the path of the regulation is going into the direction to keep the same size of the tyres, to do this, to do that, and to have a working group saying that plus or minus 5% that the speed trace will be this one.
“Today, we are not there. For me, it's quite [an] early stage to draw a conclusion when we are not able to have the same vision of what could be the speed trace."
Source: Autosport