In December, it emerged that Mercedes had found a possible loophole in the rules that could lead to a performance advantage.

The FIA confirmed the update following discussions within the sport’s Power Unit Advisory Committee. Under the 2026 ...

Formula 1's five power unit manufacturers are set to vote on a proposed tweak to how engine compression ratios are measured, ...

Formula One’s governing body, the FIA, has reached a compromise with power unit manufacturers to tighten how engine ...

Formula 1 teams are testing in Bahrain this week, but a storm is brewing in the background that might turn the season on its head. A rule change could be introduced to rein in the Mercedes power units ...

Mercedes' rivals succeed in securing a rule change following a pre-season technical row over engine performance.

A revised test at 130°C aims to end off-season speculation — but could shift the debate into 2027.

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

We may receive a commission on purchases made from links. While browsing auto repair and maintenance tools at your local parts store, you've likely come across compression testers like the Orion Motor ...