One of the most debated innovations introduced for the 2026 Formula 1 season has been the ADUO system, a mechanism designed to prevent a single power unit manufacturer from maintaining a prolonged performance advantage after the arrival of the new regulations.
However, while the concept was intended to keep competition close, the FIA’s first assessment has sparked widespread debate throughout the paddock. After analysing the opening races of the season, the governing body concluded that Red Bull currently has the strongest internal combustion engine, a verdict that surprised many given the Anglo-Austrian team’s difficult start to the championship and the fact that it has yet to win a Grand Prix.
Red Bull unable to upgrade its engine
The FIA’s decision came as a surprise even within Red Bull itself. Under the ADUO system, which focuses exclusively on the internal combustion engine element of the power unit, manufacturers judged to be behind the benchmark are permitted to introduce development updates. Red Bull, having been identified as the reference manufacturer, is not allowed to make performance upgrades to its engine.
The ruling has therefore created a potentially significant disadvantage, especially if Red Bull believes its current power unit is not actually the strongest on the grid.
Mekies: “The consequences are enormous”
Speaking to the media, Red Bull Team Principal Laurent Mekies admitted the FIA’s decision carries major risks for the Milton Keynes-based team.
“There is a significant risk for Red Bull, so you’re absolutely right to highlight it,” explained the French engineer. “It’s one of the reasons why it’s essential for Red Bull, and more broadly for the sport itself, that the situation is properly clarified.”
“Once again, we’re grateful to the FIA for the time they are dedicating to publishing their conclusions. Of course, you’d always like to reach a conclusion sooner, but it’s more important to reach the correct conclusion, even if that takes a little longer.”
Mekies also confirmed that discussions between Red Bull and the FIA remain ongoing.
“Since then, we’ve had very constructive discussions with the FIA. They are carrying out a review, and we’re sharing as much data as possible to make sure they have a complete and accurate picture of the situation.”
“As you’ve said, not only do we have a different view of this outcome, but it also has major implications for both this season and next season. So it’s important, first and foremost for the sport, that this matter is clarified. And, of course, for Red Bull Racing, the impact of finding ourselves on one side of that line or the other will be considerable.”
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