P1racenews AI automatic summary:
F1 teams face mid-season FIA rule change
A mid-season F1 rule change could drastically alter the 2026 campaign after the FIA’s official statement disclosed potential modifications. Mercedes’ engine trick related to their compression ratio has stirred discussions during the off-season and Bahrain testing. The team exploited a regulation loophole allowing them to increase the compression ratio to gain extra power. A recent proposal from the Formula 1 Power Unit Advisory Committee suggests measuring ratios at both ambient and 130°C temperatures. Power unit manufacturers are set to vote within the next 10 days to decide on the change. Despite a decision soon, the compliance won’t come into effect until August 1, 2026, affecting races starting from Zandvoort during the summer break.