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Four times world champion Alain Prost has advised Lewis Hamilton to change his driving style if he is to find success under Formula 1's new regulations.
Prost, who has been working with Renault this season, believes that reigning world champion Sebastian Vettel has an advantage and it is up to Hamilton to modify his approach.
"The way Sebastian works with people in the team, we know that he is doing little things different to the rest," Prost said.
"That gives him an advantage and makes him more confident.
"On the other side, there is a guy like Lewis, who is more of a pure racing driver. I consider Lewis as one of the quickest drivers - maybe one of the best - but is he using his full potential? Maybe not. Maybe next year he will find another motivation, but at the moment he is finding it very hard to beat Sebastian, and I think he should change a little bit."
Formula 1's regulations will be overhauled next season, with 2.4 litre v8 engines replaced by 1.6 litre v6 turbos.
Prost does not believe that the changes will hinder Vettel's chances of sustaining success.
"Before, you had the car in your hands, it was a raw package. But now it is a package that will suit someone like Sebastian. Now you are not driving by yourself. You are going to have all this computerised equipment behind you and you might get a different reaction. Maybe when we meet in March, maybe we will say something different but, at the moment, I have to say that the new regulations will suit Vettel and not Hamilton…"
