Mercedes could make a significant technical change to eliminate the advantage introduced by the engine at the center of recent discussions. Confirmation will still take some time, but for now, we can only rely on the circulating rumors. It appears that the FIA, following meetings with various engine manufacturers on the grid, is considering introducing high-temperature checks for the much-debated compression ratio of the 2026 Power Units.
The goal is to definitively resolve the situation surrounding Mercedes and the potential complaints from Ferrari, Audi, and Honda. The Brackley-based team, widely seen as the main favorite for the upcoming season, is said to have found a technical workaround that allows them to use a different compression ratio at high temperatures, effectively bypassing the FIA’s standard checks conducted at ambient temperatures.
Mercedes reacts after FIA engine decision
If confirmed, this “trick” would give the Silver Arrows around ten extra horsepower compared to their rivals, equating to roughly a couple of tenths per lap. Meanwhile, it seems that the engineers under Toto Wolff are already planning possible countermeasures.
According to motorsport.com, Mercedes could decide to use fuel with a lower calorific value than they are capable of, effectively giving up the advantage provided by the variable compression ratio. This move would prevent complaints and disputes from other engine manufacturers.
Of course, this change would only be implemented if the FIA decides to modify the measurement procedures, as requested by Ferrari, Audi, and Honda. Otherwise, Mercedes is expected to continue using their current fuel while maximizing its performance.
As the season opener draws near, the tension between technical innovation and regulatory oversight continues to define the 2026 narrative. Mercedes’ potential willingness to compromise suggests a desire to keep the battle on the asphalt rather than in the courtroom. Whether this fuel adjustment will be enough to satisfy the FIA and its rivals—or if it will cost Mercedes the top step of the podium—remains one of the most compelling storylines heading into the new era of Formula 1. Both the fans and the teams now await the final verdict from the governing body to see how the hierarchy truly settles.
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