P1racenews AI automatic summary:
The new ‘hot test’ designed to close the engine compression ratio loophole in the 2026 Formula 1 rules will now come into force six races earlier than originally mooted
Formula 1’s manufacturers have agreed to revised compression ratio rules to help Mercedes’ rivals catch up. The controversy stemmed from Mercedes exploiting a new 16:1 compression ratio limit for 2026. Rivals sought changes to level the playing field, resulting in a new hot test to be introduced earlier than planned. The FIA worked on a compromise to control compression ratios in hot and cold conditions from 2026. Mercedes remains confident in passing the additional test, while rivals look forward to the removal of the cold test in 2027. The changes aim to address the advantage Mercedes had with compression ratios and promote fair competition in Formula 1.
