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

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

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 ...

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 ...

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.

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

The FIA have issued an update over a supposed loophole found in the F1 engine regulations by Mercedes and Red Bull. F1's apparent engine controversy is centred on the compression ratio of the internal ...

Other F1 teams have raised concerns about Mercedes and Red Bull finding an engine loophole - a topic that is set to remain in ...