Formula One to revise controversial rule at centre of Mercedes engine row

March 1, 2026

TL;DR

The FIA and F1 engine manufacturers have agreed on a compromise for engine compression ratios.
Amendments to the 2026 regulations will control compression ratios in hot and cold conditions from June 2026.
Mercedes was suspected of exploiting a loophole in the compression ratio rules to gain an advantage.
F1 is monitoring the situation in the Middle East and its potential impact on upcoming races.
The first three races in Australia, China, and Japan are not in the Middle East and are not currently affected.

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