The Federation Internationale de l'Automobile has officially released the results from the third ADUO assessment period of the 2026 Formula 1 season. Based on detailed internal combustion engine performance measurements, motorsport's governing body confirmed that no power unit manufacturer has secured additional homologation rights.
The evaluation window, spanning the seven races from the Dutch Grand Prix at Zandvoort through the thrilling rounds down to Interlagos, revealed shifting competitive dynamics behind Red Bull. However, the performance gaps recorded did not cross the strict regulatory thresholds required to trigger extra development allowances for rival power unit builders.
In an official statement, the governing body noted that while relative performance deltas against the reference ICE evolved throughout this third period, the fluctuations were insufficient to grant extra homologation slots. The framework dictates that additional development parameters are strictly reserved for manufacturers whose relative deficit worsens past predefined classification bands.

FIA Single-Seater Director Nikolas Tombazis emphasized that the organization conducted exhaustive telemetry and data reviews throughout the campaign. Backed by robust evaluation protocols and high data integrity, the authority expressed full confidence in the conclusions distributed to all participating engine manufacturers.
As the current championship cycle concludes, the ADUO concept continues to serve as a vital regulatory mechanism for the sport. The FIA plans to collaborate closely with teams and manufacturers to refine methodologies ahead of the upcoming evaluation phase scheduled for the 2027 racing calendar.



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