F1's five power unit manufacturers are set to vote on a tweak to the measurement of engine compression ratios, a change that could be implemented over the summer break. The 2026 regulations specify a compression ratio of 16:1, down from 18:1 last year, and the current method measures the ratio at ambient temperature when the engine is idle. The vote will decide whether the measurement procedure should be altered, potentially affecting engine performance and testing protocols.
F1 Power Units to Vote on Engine Compression Measurement Change
F1's five power unit manufacturers will vote on a proposed change to how engine compression ratios are measured, a move that could take effect during the 2026 summer break.