If you've ever looked under the bonnet of a car, the engine can seem like a maze of metal parts, pipes and wires. In reality, its job is quite simple: it turns fuel into the power that moves your car.

What is a strong hybrid car, and how does it work? Discover how petrol engines and electric motors work together, improve ...

That lump under your car's hood? Yep, that's an engine. Duh, right? That thing spinning the propeller on a Piper J-3 Cub? Also an engine. That said, they're about as similar as a catapult and a ...

More power typically hurts fuel economy, but higher compression breaks the rule. Here's how modern engine design squeezes out both.