Story perspectives

FIA Investigates Formula 1 Engine Rule Loophole

12/23/2025

30 4

Summary

Story summary

The Fédération Internationale de l'Automobile (FIA) is reviewing allegations of a compression-ratio loophole in Formula 1's 2026 engine rules involving Mercedes and Red Bull.
Honda, Ferrari, and Audi say teams can maintain 18:1 compression, despite a 16:1 limit, potentially gaining 15 horsepower.
The FIA has scheduled a meeting with all power-unit suppliers ahead of the Australian Grand Prix.
The FIA has revised fuel-flow meter rules to remove 'intentional' from regulations.

1 of 1

Story summary

The Fédération Internationale de l'Automobile (FIA) is reviewing allegations of a compression-ratio loophole in Formula 1's 2026 engine rules involving Mercedes and Red Bull.
Honda, Ferrari, and Audi say teams can maintain 18:1 compression, despite a 16:1 limit, potentially gaining 15 horsepower.
The FIA has scheduled a meeting with all power-unit suppliers ahead of the Australian Grand Prix.
The FIA has revised fuel-flow meter rules to remove 'intentional' from regulations.