Christian Horner says Mercedes and Red Bull are pushing F1 2026 power unit limits, dismissing claims of “cheating like ...

Mercedes Formula 1 boss Toto Wolff is adamant his squad's power unit is fully legal and is bemused by rival complaints about ...

Mercedes boss says regulations on compression ratios are “very clear,” tells rivals to “get your shit together.” ...

Teams are continuing to press for clarification from the governing body over a response to rumours that two engine manufacturers have exploited loopholes in the wording of the new regulations ...

Formula 1’s technical landscape is on the verge of a major flashpoint as manufacturers prepare for two high-stakes meetings ...

You've heard the term compression ratio before, but have you ever wondered exactly what it means? Well, it's time to explain exactly what compression ratio is, and why every carmaker is now obsessed ...

Strictly defined, compression ratio is the total volume above the piston at bottom dead center (BDC), divided by the total volume above the piston at top dead center (TDC). First, let's look at the ...

Tucker Ryals;Gainesville, FL: I'd like to pose a question regarding an article Jeff Smith wrote on the Chevy 5.3L motor "Bolt On a Cam and Heads and Add 120+ HP" (April '08). I read the article with ...

A summit between the FIA and F1 engine manufacturers concluded without a resolution to the technical controversy over ...

A gasoline piston engine that can dynamically change its compression ratio —that is, the amount by which the piston squeezes the fuel-air mixture in the cylinder—has long been a holy grail of engine ...

Pretty simple question actually (or so my ignorant mind thinks): At what compression ratio would an engine benefit from higher octane fuel? The Focus I drive is just over 10:1, and I've heard some say ...