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Engine row erupts over alleged 2026 compression loophole

Dec.22 Formula 1's 2026 engine rules have been thrown into early controversy after reports that Honda, Ferrari and Audi are challenging Mercedes and Red Bull over an alleged compression-ratio loophole. According to German outlet motorsport-magazin.com, the three manufacturers have lodged a complaint with the FIA claiming Mercedes and Red Bull Powertrains have found a way to effectively retain an 18:1 geometric compression ratio under the new regulations, despite the mandated limit of 16:1. The allegation centres on thermal expansion. While the 2026 rules cap compression at 16:1, measurements are specified to be taken at ambient temperature. Rivals suspect that once the engines reach...
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