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Toto Wolff thinks a relaxation of Formula One's engine freeze regulations could create more problems than solutions for the grid.

One of the topics on the agenda of talks between team bosses this year has been whether to tweak rules which currently prevent changes to engines for anything other than safety or reliability during the season. Ferrari team principal Marco Mattiacci is one of those in favour of it, though he has stressed his support has nothing to do with cutting the advantage enjoyed by Mercedes this year.

Mercedes boss Wolff admits he is split on the issue as he has concerns over the ramification of a change to the rules.

"It's a difficult one, because I strongly believe we need stability in the regulations," Wolff said. "Personally, I'm not keen on it because more costs will incur. Equally, how can you make sure everybody is on the same spec?

"It triggers so many consequences and you open up a can of worms by doing that. We are trying to be productive. I think it is [about] not forgetting your own agenda but doing it for the benefit of Formula One."

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