P1racenews AI automatic summary:
The new FIA rule change regarding the controversial engine compression ratio officially becomes active on June 1.
A key FIA rule change will come into effect at the Monaco Grand Prix for the first time, potentially impacting Mercedes’ dominance in the 2026 season. This rule pertains to the measurement of engine compression ratios and will begin on June 1 in time for the principality’s race weekend. The new regulation aims to address a loophole that experts claim has favored Mercedes, who have won all five races so far and lead the standings. The maximum compression ratio has been reduced from 18:1 to 16:1 for this season, with suspicions that teams may have been exploiting materials to surpass the limit. With the FIA now introducing a 130°C engine test alongside the traditional cold test, there is anticipation about its impact on leveling the playing field, although some doubt exists among competitors regarding its effect on Mercedes’ supremacy. The upcoming Monaco Grand Prix will serve as the first litmus test for this new regulation, providing insight into how it may shake up the Formula 1 hierarchy for the remainder of the season.
