Formula 1's new era was always going to bring questions, but its first week of serious running has raised more than most.

Ferrari, Honda, Audi and now also Red Bull have raised concerns with the FIA that Mercedes can increase their rate of compression from the allowed 16:1 ratio to 18:1 during operation. Mercedes believe ...

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

Formula 1s big four of McLaren, Mercedes, Red Bull and Ferrari appear to be at the front again, but in which order? Watch ...

Max Verstappen has accused Toto Wolff of "diversion tactics" after the Mercedes team boss talked up the performance of Red Bull's new car and power unit during this week's preseason 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 ...

As the 2026 season approaches, Formula 1 must find a way to resolve its compression ratio controversy - but every possible ...

The crux of the matter lies in that the Formula 1 compression ratio is not measured by sensors during engine operation, but statically. The FIA simply compares the ratio in volume in the cylinder ...

A hot-temperature compression ratio test is one solution set to be tabled at an upcoming meeting of the power unit advisory committee.

Mercedes team boss Toto Wolff believes Red Bull have set the early benchmark for power unit performance under Formula 1's new ...