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

FIA announces updated 2026 regulations, including new engine testing after Mercedes PU scrutiny, plus a series of rule tweaks ahead of the season.

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 ...

You've probably heard racers talking about leakdown testing as a method of verifying engine condition. Being a hot rodder, you've probably performed a similar function by using a compression tester to ...

A new engine test will be introduced after the seventh race of the 2026 Formula 1 season following a power-unit dispute over ...

Hamilton fears Mercedes’ pace edge may have a controversial ...

The FIA has updated the 2026 F1 engine rules, changing how compression ratios are measured to prevent loopholes.

Hamilton addresses rumors of Mercedes’ technical advantage after day one of preseason Bahrain testing. Concerns raised about Mercedes’ fuel loads, engine modes, and possible compression ratio edge.

Formula 1's governing body, the FIA, has announced a resolution to the sport's regulatory row over engine compression ratios, ...