Mercedes team boss Toto Wolff says Formula 1's engine manufacturers are aligned in principle on a future move to V8 power units, but felt it didn't make financial sense to fast-track them before 2031.

FIA president Mohammed Ben Sulayem is a driving force behind the introduction of simpler, cheaper and lighter engines for F1's future power unit formula, and was keen to make the change as early as 2029, which would have meant just three seasons of using the hybrid engines introduced next year.

Initial discussions on the topic took place at a meeting with F1's current and future OEMs in Bahrain, and Ben Sulayem called for another meeting in London this Thursday to further flesh out plans.

However, on the Saturday of the Italian Grand Prix weekend, the FIA president notified the power unit

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