Former Formula 1 driver David Coulthard has called out the FIA after Mercedes is claimed to have made use of a compression ratio loophole.<br>The compression ratio is just one of many changes introduced as part of the new 2026 regulations. Previously, that ratio stood at 18:1, but under the new regulations, the FIA has reduced it to 16:1.<br>It was suggested in December 2025 that Mercedes had ...<a class='more' href='https://www.motorsport.com/f1/news/fia-faces-fresh-scrutiny-as-david-coulthard-points-to-rule-oversight-amid-compression-ratio-saga/10800625/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-F1&utm_term=News&utm_content=www'>Keep reading</a>