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 ...

Formula 1 bosses are moving towards a rule change that would close a loophole rivals believe Mercedes have exploited in the sport's new engine rules.

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

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 ...

Mercedes' rivals succeed in securing a rule change following a pre-season technical row over engine performance.

The FIA confirmed the update following discussions within the sport’s Power Unit Advisory Committee. Under the 2026 ...

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

A revised test at 130°C aims to end off-season speculation — but could shift the debate into 2027.

Formula One’s governing body has reached a compromise with manufacturers that changes the way the compression ratio will be ...

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

While the FIA has signed off on Mercedes’ 2026 engine, rival teams aren’t happy with how the private test was handled at ...