The ADUO paradox: Mercedes could fully exploit it for 2027 at Red Bull’s expense
One of the most controversial technical topics of the 2026 Formula 1 season continues to be the FIA’s ADUO system, and the latest analysis suggests Mercedes could ultimately emerge as its biggest beneficiary. According to reports, the German manufacturer may choose to use every concession granted by the FIA to strengthen its 2027 power unit rather than introducing an upgraded specification during the current season.
If that strategy is adopted, the regulations designed to help manufacturers close the performance gap could instead provide Mercedes with an even stronger foundation for the future, while Red Bull Powertrains receives none of the same advantages.
A major political victory for Toto Wolff
Earlier this season, Mercedes Team Principal Toto Wolff strongly criticized the concept behind the ADUO mechanism, arguing that it should only assist manufacturers genuinely struggling to remain competitive.
“The ADUO should be a system to help those who are struggling, not an elevator to overtake those who have simply done a better job,” Toto Wolff said when discussing the possibility of rival manufacturers receiving significant engine development concessions.
However, the FIA’s final assessment produced an unexpected outcome. Contrary to widespread expectations, Mercedes’ internal combustion engine was not classified as the benchmark power unit on the Formula 1 grid.
Instead, the FIA identified the Red Bull engine as the strongest reference point, meaning Mercedes became eligible for ADUO concessions, including one engine upgrade opportunity during 2026 and another in 2027.
Mercedes may save every benefit for 2027
According to the latest edition of Autosprint, Mercedes could decide not to homologate a revised power unit during the 2026 season at all. Instead, the manufacturer could redirect every advantage granted through the ADUO programme—including additional development budget and extra dyno testing hours—towards the design and development of its 2027 Formula 1 engine.
Such an approach would allow Mercedes to maximize the value of the concessions without necessarily introducing a new specification this season, while simultaneously strengthening its long-term engine project.
As highlighted by journalist Fulvio Solms in Autosprint:
“Mercedes will still be able to spend and fully exploit all the concessions without homologating a new specification, transferring the knowledge gained directly to its 2027 V6 engine. Paradoxically, we are looking at a system that not only fails to balance anything, but actually makes the team already leading the championship even stronger.”
A regulation that raises fresh questions
If Mercedes ultimately follows this path, it would once again fuel debate over whether the ADUO framework is achieving its intended objective. Rather than helping manufacturers close the performance gap during the current regulatory cycle, the system could instead become a strategic development tool for the next generation of Formula 1 power units.
For Red Bull, the irony would be particularly significant. After being identified by the FIA as the benchmark engine manufacturer, the Milton Keynes operation would receive no comparable concessions, while one of its main rivals could invest additional resources into building an even stronger package for 2027.
Whether Mercedes chooses to introduce an updated engine in 2026 or saves every available concession for its next-generation V6 project remains to be seen. However, the debate surrounding the ADUO system is unlikely to fade anytime soon, especially if it ends up providing one manufacturer with a substantial long-term competitive advantage rather than creating the level playing field it was originally intended to deliver.
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