P1racenews AI automatic summary:
An alleged power unit trick by Mercedes is said to have caught the attention of rival power unit manufacturers ahead of 2026.
Reports suggest that there may be a potential protest at the 2026 Australian Grand Prix over an alleged power unit trick involving Mercedes HPP and RBPT.
Ferrari, Audi, and Honda have raised concerns with the FIA regarding the alleged trick uncovered by Mercedes and Red Bull.
In 2026, the geometric compression ratio of power units is limited to 16:1, but it is believed Mercedes and Red Bull may have found a way to surpass this limit.
The trick could potentially provide up to 15bhp, equivalent to three-tenths of a second per lap at Albert Park in Melbourne.
The FIA is aware of the situation and plans to discuss the matter further with power unit manufacturers to ensure fairness and clarity in compliance with regulations.
Any potential changes to meet the 18:1 ratio would require stronger engine components, posing challenges for teams to modify power units while complying with regulations and supplying customer teams with legal engines.
