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FIA Considers Changing Key Engine Development Evaluation Timeline
23 March 2026GP BlogAnalysisRumor

FIA Considers Changing Key Engine Development Evaluation Timeline

The FIA is proposing to move an early-season engine performance evaluation forward, a change that could help rivals close the gap to Mercedes. The German manufacturer, currently enjoying a power unit advantage, must now decide how to respond to a shift that may accelerate the development race.

The FIA is considering moving forward a key mid-season evaluation point for Formula 1 power unit performance, a change that could aid manufacturers like Red Bull Ford, Audi, and Honda in catching up. This potential shift puts Mercedes, whose engine currently holds a performance advantage, in a strategic dilemma over whether to support or oppose the amendment.

Why it matters:

This proposed change to the ADUO (Additional Development and Upgrade Opportunities) system directly impacts the competitive balance. It could accelerate the development race by allowing trailing manufacturers an earlier opportunity to unlock performance upgrades, potentially eroding any early-season engine advantages held by leaders like Mercedes.

The details:

  • The ADUO system includes several checkpoints where the performance of all power units is compared. Based on this data, the FIA determines how much additional development leeway each supplier receives during the season.
  • The first evaluation was originally scheduled after six race weekends, which would have been after the Miami Grand Prix under the initial 2024 calendar.
  • The cancellation of the Bahrain and Saudi Arabian Grands Prix pushed this first checkpoint back to after the Monaco Grand Prix.
  • The FIA's proposal is to bring this first evaluation forward to an earlier point in the season to better accommodate manufacturers and maintain the system's intended competitive function.
  • For Mercedes, an earlier review is seen as unfavorable, as it could allow rivals to close the performance gap sooner by unlocking development tokens based on the new data.

What's next:

Mercedes' strategic response is now the focal point. Team principal Toto Wolff and the Mercedes hierarchy are not yet taking a definitive public stance.

  • The team is awaiting the FIA's formal proposal to assess the specific implications before deciding its position.
  • However, Mercedes' influence may be limited. If a majority of other power unit manufacturers support the accelerated timeline, the change is likely to proceed regardless of Mercedes' stance, setting the stage for a intensified development battle in the middle part of the season.

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