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 ...

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

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 ...

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 ...

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

A political firestorm has been brewing in Formula 1 in recent weeks and months over whether engine manufacturers have found a loophole in the new 2026 technical regulations. Mercedes and Red Bull may ...

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

Increasing an engine’s compression ratio is a proven way of unlocking extra horsepower, but there’s a point of diminishing returns. The team at Garage 54, the Russian mechanics who built a V16 using ...

Nissan brought the first, and only, variable-compression engine to market. But its future doesn't look bright. Complexity in ...