Geometric compression ratio limit

In Simple Terms

F1 engines have a limit on how much they can compress the air-fuel mixture inside each cylinder. No cylinder is allowed to have a compression ratio higher than 16.0, which means the mixture can be squeezed to no more than 16 times its original volume. Manufacturers measure this themselves following FIA guidelines.

• Maximum compression ratio of 16.0 applies to every cylinder in the engine
• Compression ratio measures how much the air-fuel mixture is squeezed before ignition
• Each engine manufacturer is responsible for measuring and verifying their own compression ratio
• Measurements must follow FIA-provided guidance to ensure standardization