Quick Summary
• Formula 1 Teams Use 3D Printing to Navigate New Engine Compression Ratio Rules March 16
Additional Context
Mercedes and Red Bull have reportedly found a way to work around Formula 1’s new compression ratio regulations for the 2026 season. The FIA reduced the maximum allowable compression ratio from 18:1 to 16:1 to reduce development costs and level the playing field for new teams.
The current regulations measure compression ratios based on static engine conditions at ambient temperature. However, engine components expand and stretch during operation at high temperatures and RPM, which can alter the actual compression ratio. Mercedes and Red Bull are attempting to exploit this difference by engineering pistons that expand strategically under operating conditions.
Both teams are using 3D printing technology to create pistons with complex internal structures that cannot be achieved through tradi