Compression Ratio
FIA and F1 manufacturers progress on 2026 engine compression dispute
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Formula 1's governing body, the FIA, held a meeting with engine manufacturers on Thursday to address concerns over a potential loophole in the 2026 power unit regulations. Manufacturers agreed on a methodology to measure compression ratios in hot-running engines, though no immediate rule changes are expected. The controversy centers on Mercedes and Red Bull allegedly gaining a performance edge through heat-expanding materials.
Audi has joined calls for the FIA to investigate potential loopholes in the 2026 Formula 1 engine regulations concerning compression ratios. Manufacturers like Mercedes and Red Bull are accused of using materials that allow higher ratios at operating temperatures, potentially gaining up to 15bhp. A key meeting is set for January 22 to discuss dynamic measurement methods.