Mercedes rivals push for intervention over F1 engine loophole - but how realistic is it?

Under the new Formula 1 power unit regulations, discussion about the compression ratio flared up even before a single wheel had turned with the 2026 machinery. The ratio between cylinder volume with the piston at the bottom of its stroke and at the top was 18:1 under the previous regulations, but has been reduced to 16:1 for 2026 - partly to make it more accessible for newcomers.
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