Mercedes could be hiding the true potential of its power unit in order to prevent rival manufacturers from activating the ADUO system. Here is what might be happening behind the scenes at the start of the 2026 Formula 1 season.
It is well known in the Formula 1 paddock that Mercedes has often used strategic approaches to conceal the full potential of its car and power unit. However, at the beginning of the 2026 F1 season, the Brackley-based team may have taken this approach a step further. According to several sources within the paddock, Mercedes could be deliberately limiting the output of its engines to prevent rival manufacturers from benefiting from the ADUO mechanism.
But what exactly is ADUO? In order to avoid a repeat of the dominance seen in the 2014 Formula 1 season, the FIA introduced a regulatory mechanism designed to help engine manufacturers that fall significantly behind the leading power unit during the year. This system would allow those manufacturers to receive certain technical allowances in order to close the performance gap.
This possibility could create a major shift in the competitive balance during the 2026 season. If one manufacturer were to fall too far behind the benchmark engine, the regulations would allow them to recover ground more quickly compared to their rivals. At the moment, the reference power unit on the grid appears to be clearly represented by Mercedes, thanks to highly efficient management of the hybrid electrical systems and what some insiders suspect could involve a clever solution related to the engine’s compression ratio. Future inspections carried out while the engines are still hot could eventually clarify this detail.
Because of this situation, the Brackley team reportedly fears that rival manufacturers could use the ADUO provisions to stage a comeback during the season. For that reason, Mercedes may have taken a bold strategic decision for the early phase of the championship.
Playing hide and seek by limiting engine power
According to several insiders in the Formula 1 paddock, Mercedes could be deliberately reducing the power output of its engines during the opening rounds of the 2026 season in order to prevent competitors from activating the ADUO advantage. The idea would be to hide the maximum potential of the Mercedes power unit so that all customer and rival engines remain within a narrow performance window.
The key figure in this situation is a difference of two percent. For the ADUO support mechanism to be triggered, rival power units must be at least two percent weaker in terms of thermal engine performance compared to the benchmark engine on the grid.
For this reason, Mercedes could be approaching the first six Grands Prix of the 2026 Formula 1 season with a slightly reduced power level in order to keep all rival manufacturers within that two percent margin. By doing so, the Brackley team hopes to prevent competitors from qualifying for the ADUO advantage.
However, the Silver Arrows are also taking a calculated risk. Running with reduced engine power could allow rivals—Ferrari in particular—to close the gap in performance during the opening phase of the championship. Yet this strategy could pay off later in the year, as from the seventh race of the season the W17 might unleash additional engine performance that has been carefully kept hidden until that point.
At the moment, the only manufacturer that does not appear to pose an immediate concern for Mercedes is Honda, which is reportedly facing significant difficulties with its current power unit project. If this situation continues, Aston Martin could be the only team with the opportunity to activate the ADUO mechanism. In that scenario, if the performance deficit exceeds four percent, the Japanese manufacturer would even be allowed to use two development tokens in order to address the gap.
The tactical maneuvering behind the scenes is becoming just as intense as the racing on the track. Mercedes’ decision to manage their engine life and output so precisely highlights the complexity of the new regulations, where winning the first few races is only part of a much larger, season-long strategic puzzle.
The 2026 Chinese Grand Prix therefore serves as a critical battlefield for engine politics, where Mercedes is carefully balancing its current lead against the risk of allowing Ferrari to benefit from performance-balancing development tokens.
