FIA reveals latest ADUO results in final review of 2026 F1 season

The FIA has released its final Additional Development and Upgrade Opportunities (ADUO) results for the 2026 Formula 1 season, with no adjustments granted for any power unit manufacturers. The FIA installed a mechanism in the regulations allowing power unit manufacturers to make updates if they fell behind the leading engine, using tokens under a performance scale.

After the initial period covering races from the Australian GP to the Canadian GP, Red Bull Ford Powertrains was considered the benchmark, while Mercedes' ICE trailed between 2-4%. Ferrari, Audi, and Honda were more than 4% behind, granting them two upgrades this year and two more in 2027. Red Bull requested a review of the ADUO analysis, delaying the official publication of the first results as it disputed the findings.

The final analysis, which covered engine data from the Dutch GP to the US GP, found no changes, so no manufacturer will gain or lose its current concessions. There were also no changes during the second ADUO period during the summer. The FIA is open to future changes to the ADUO system, subject to approval from the power unit manufacturers.

FIA single-seater director Nikolas Tombazis expressed confidence in the concept, stating that the first year of implementation reinforced his belief in its effectiveness. However, he emphasized the need to evolve the system to ensure its continued efficiency, relevance, and purpose in future seasons.