Eric Boullier has hit back at suggestions that the 2017 regulations could actually hurt Formula 1.
Part of Mercedes's opposition to the wider cars with bigger wings for next year was the argument that more downforce will just make overtaking more difficult.
"I disagree with some comments made by our rivals in the media," said McLaren team boss Boullier.
The 2017 changes are backed primarily by Red Bull - whose Dr Helmut Marko has hit out at Mercedes chief Toto Wolff's "paranoia" - as well as McLaren-Honda.
It is actually McLaren's concept that was the basis of the 2017 chassis rules.
Boullier is quoted by Spain's El Confidencial as pointing out that while the new cars will have more downforce, the wider tyres will produce more "mechanical grip".
"This should not affect the amount of overtaking."
"Additionally, the influence of the front wing will be lower, since the floor and the diffuser will generate more downforce, allowing more overtaking."
The 2016 calendar continues with the Spanish Grand Prix next weekend.
