11 February 2026F1i.comRace reportDriver Ratings
Wolff warns Mercedes could be ‘screwed’ if FIA tweaks 2026 engine rules
Mercedes team principal Toto Wolff says the Silver Arrows face an existential threat if the FIA revises the 2026 power‑unit regulations, arguing the team’s alleged compression‑ratio loophole could be outlawed after rivals’ lobbying.
Mercedes chief Toto Wolff warned that a rule change by the FIA could leave the team’s 2026 power unit—built around an alleged compression‑ratio loophole—effectively dead. He says rivals have been lobbying hard to close the gap, and any tweak before the Australian Grand Prix would derail years of development.
Why it matters:
- The engine could give Mercedes a clear edge under the 16:1 compression cap.
- Changing the rule would strip that advantage and shake the 2026 competitive order.
- Customer teams (Aston Martin, Williams) share the same unit, so the fallout spreads.
The details:
- Mercedes says it meets FIA cold‑engine checks at 16:1, then exceeds it when the unit is hot.
- Ferrari, Honda, Audi and Red Bull have lodged formal complaints and met privately with the FIA.
- Wolff claims Mercedes kept the FIA in the loop and has “all the assurances” of compliance.
- He dismisses lawsuits, noting that engineering creativity is respected but the sport follows the regulator.
What's next:
- The FIA will decide before the Australian GP in March.
- If the rule tightens, Mercedes must redesign its 2026 unit, delaying its debut.
- Wolff says the team will adapt, but the window for changes is closing fast.