McLaren’s deal with Honda to supply its Formula 1 team with engines from 2015 onwards is not expected to have any impact on its road car division, an insider has told Autocar.

Drawing a parallel between McLaren’s current F1 deal with Mercedes, and the fact that arrangement bears no relation to the road car division, the source said: “At the moment there is no anticipated impact on the road car division as a result of the Honda deal.”

In particular, the source denied that Honda would have any involvement with the McLaren P13, the firm’s next all-new road car and a mooted Porsche 911 Turbo rival.

Development of that car, which is thought to use a 450bhp version of McLaren's 3.8-litre V8, is said to be at an “advanced” stage.