Mercedes AMG has been at the centre of F1's latest controversy surrounding engine compression ratios and a loosely worded loophole.

Ferrari wants clarity regarding the Mercedes engine compression ratio saga, with an Australian GP protest ruled out.

BBC Sport F1 correspondent Andrew Benson assesses what we learnt - and what we didn't - from the first pre-season test in ...

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 ...

F1’s 2026 rules set a 16:1 compression ratio limit for engine cylinders. This caps how much the engine can squeeze fuel before burning it — the more you squeeze, the hotter it gets and the more power ...

Lewis Hamilton addressed rumors of a Mercedes compression ratio advantage after Day 1 of Bahrain testing, calling for a level ...

Mercedes could come out on the losing side of a critical vote regarding the engine regulations as other power manufacturers ...

Toto Wolff says Mercedes will not take legal action if the FIA adjusts the compression ratio checks for the 2026 F1 season. He adds the consequences for Melbourne would be “unclear” in that scenario ...

The INNengine e-Rex is described as a one-stroke engine, though it actually has two strokes. But it's not dirty like traditional two-strokes.