F1 warned of consequences if customer parts are banned

As F1 heads to a new rules era from 2026, one idea that some outfits want is to clamp down on the kind of partnerships that exist between Red Bull/RB and Ferrari/Haas.

McLaren CEO Zak Brown in particular has been extremely vocal on the point, as he suggests F1’s regulations are “no longer fit for purpose” in allowing teams to work together, especially with common ownership.

While it is understood that the future definition of a constructor…