FIA defends ADUO system, calls for refinement
NXTbets Pro | Published On: August 13, 2026
ADUO system under scrutiny
The FIA is backing Formula 1’s Additional Development and Upgrade Opportunities system, but it wants changes. ADUO stands for Additional Development and Upgrade Opportunities, and the framework was built as a safety net for manufacturers that fall behind. It reviews each manufacturer’s internal combustion engine performance and opens upgrade opportunities if an engine is at least 2% behind the best engine on the grid. Those development opportunities apply to the full power unit, including electrical components. That wide reach has helped turn ADUO into one of the biggest political issues in Formula 1 this season. Toto Wolff warned early in the season that ADUO should not become a leapfrog mechanism. The first-period results have not been released, and Red Bull asked for a factual verification after the first period. Paddock suggestions have also pointed to possible early underperformance by some manufacturers, including Ferrari and Mercedes, in order to secure ADUO benefits. The system was meant to protect lagging manufacturers, but its structure has already created fresh scrutiny.
Tombazis on ADUO refinement
Nikolas Tombazis said the FIA’s measurements for the first period were accurate, a firm defense of the way the system has been policed so far. He also said ADUO has weaknesses and will need future changes. Those changes, he said, should make the process less time-consuming and less controversial. Tombazis said the current design could theoretically be manipulated so Red Bull Powertrains remains the benchmark while rivals receive extra development opportunities. That is the central fear around the framework. ADUO bases eligibility on internal combustion engine performance, but the development benefits reach the full power unit. That split makes the system powerful and sensitive at the same time. It also explains why the debate has moved beyond simple measurements and into questions about how the rules can be shaped, stretched or used against their original intent. Tombazis did not back away from the system. He backed its measurements and then made clear the FIA knows the structure still needs work.
Honda upgrade arrives
Honda is bringing its first ADUO upgrade to Zandvoort, which gives the system an early trackside test with a major manufacturer. Honda chief engineer Shintaro Orihara said the system is fair for Honda for now and said it should continue to be monitored across the sport. That view puts Honda inside the process rather than outside the debate. It shows the system already has real-world consequences for development planning and upgrade timing. Orihara’s comments also fit the wider picture around ADUO. The framework was designed to help manufacturers that fall behind, but it has moved straight into the middle of Formula 1’s political and technical arguments. The FIA now has to keep the system functioning while also addressing the concerns Tombazis acknowledged. Honda’s first upgrade is one more sign that ADUO is no longer just a theory on paper. It is part of the competitive calendar, and it will stay under close watch as more manufacturers work through the eligibility process.
