Red Bull-Ford and rivals granted no new homologations in final 2026 ADUO review

The FIA has granted no additional power-unit homologations in its third and final ADUO review of 2026. The results were confirmed after the Brazilian Grand Prix.

Motorsport.com reports that the assessment used data from the Dutch Grand Prix through the United States Grand Prix. The FIA communicated its findings to all power-unit manufacturers but withheld further performance index measurements because they were confidential.

“The FIA has undertaken extensive analysis as part of the review of ADUO this year. Based on the quality of the data and the robustness of the assessment process, we are confident in our findings and the conclusions reached,” said FIA single-seater director Nikolas Tombazis.

Tombazis said the FIA was working with power-unit manufacturers and teams on refinements to the methodology for future seasons.

ADUO was introduced in 2026 to give underperforming engine manufacturers additional development opportunities. Manufacturers whose internal combustion engines are at least two per cent behind the leading engine can qualify for additional upgrades.

Red Bull-Ford was the internal combustion engine benchmark in the first review. Mercedes was assessed as two to four per cent behind and received one additional homologation for 2026 and another for 2027.

Audi, Ferrari and Honda were each assessed as more than four per cent behind in that review. Each received two additional homologations for 2026 and two for 2027.

The second ADUO review, which concluded after the Hungarian Grand Prix, also produced no additional allocations.

RacingNews365 reports that the next review will cover the first six races of 2027, from Bahrain through Miami.