A political firestorm has been brewing in Formula 1 in recent weeks and months over whether engine manufacturers have found a loophole in the new 2026 technical regulations.

Formula 1 bosses are moving towards a rule change that would close a loophole rivals believe Mercedes have exploited in the sport's new engine rules.

The legality over the Mercedes compression ratios – which measure how much the air-fuel mixture inside an engine cylinder can be compressed – has been of hot debate during F1 2026 pre-season ...

The compression ratio controversy will be addressed with a new test, but not until August.

F1 teams expect to get clarity on compression ratio saga very soon ...

Engine compression ratios have become a hot topic ...

Zak Brown has dismissed the swelling controversy over compression ratios and Mercedes power units as nothing more 'typical ...

A loophole in Formula 1’s new technical regulations offers a way around the 16:1 compression ratio cap, introducing ...

A late rule change could turn the 2026 season on its head.

Increasing an engine’s compression ratio is a proven way of unlocking extra horsepower, but there’s a point of diminishing returns. The team at Garage 54, the Russian mechanics who built a V16 using ...

Apart from the very curious, not many people ask why diesel engines, compared to gasoline, run higher compression ratios. The argument is reasonably straightforward and starts with fuel ...