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 ...

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

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

Formula 1 constructors and the FIA have reached a compromise to quell the compression ratio saga that has dominated the 2026 pre-season ...

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

Formula 1 bosses are moving towards a rule change that would close a loophole rivals believe Mercedes have exploited in the ...

We may receive a commission on purchases made from links. I have been working on my own vehicles for almost 40 years and in that time have accumulated a sizable collection of tools. The bulk of them ...

Formula 1s engine dispute will be resolved before the season-opening Australian Grand Prix after talks were held in Bahrain ...

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 ...

With every passing day the Mule provides opportunities beyond our original expectations. Since the 467ci engine belongs to HPP editor Tom DeMauro, it is at our beck and call. This affords HPP the ...