Mercedes, Red Bull Risk F1 Punishment as Rivals Push for FIA Clarification

Rival F1 engine manufacturers are understood to be concerned that certain design concepts could comply during static checks while offering a performance advantage once engines reach operating temperatures.

While exactly how the Mercedes and RBPT's trick works remains unknown, rivals estimate that increasing the compression ratio will yield around 15 hp advantage, as per the same Motorsport Magazin report.

FIA's Take on the Matter

The FIA has confirmed the matter is being actively discussed with manufacturers, but stressed that no wrongdoing has been identified.

"The issue will continue to be discussed in technical forums with the engine manufacturers," an FIA spokesperson explained to Motorsport Magazin, as translated by Google auto-translate.

While rivals have pointed to the effects of thermal expansion once an engine is running, the FIA made clear that current rules do not account for measurements under operating conditions.

“Thermal expansion can affect dimensions at operating temperature,” the FIA acknowledged, “but current regulations do not require measurements under hot conditions.”

"The FIA ​​continuously reviews such matters to ensure fairness and clarity. Adjustments to the regulations or measurement procedures may be considered in the future," the FIA spokesperson concluded.

Repercussions if PU Is Deemed Non-Compliant

At this stage, Mercedes and Red Bull Powertrains remain compliant, and no formal investigation or ruling has been made to date.

However, if a power unit were later deemed non-compliant, teams could face consequences ranging from mandatory design changes to disqualification should a car fail technical scrutineering.

With engine development already well advanced and the 2026 reset looming, rival teams are keen to eliminate any ambiguity.

Whether the FIA opts to issue further clarification or adjust measurement procedures, the outcome could carry significant implications long before the new era of F1 officially begins.