Smart Your Engine

Everything you need to know about the thing that powers your car.

How Infiniti's Variable-Compression Engine Works

At last, the best of both worlds.

4-cylinder engine for chevy silverado and gmc sierra Why Four-Cylinder Engines Are Coming to Full-Size Trucks

The 2019 models of the GMC Sierra and Chevy Silverado feature four-bangers, the first time such a small engine has powered such a big truck. We explain the engineering that made it possible.

Wankel Rotary Why Car Lovers Are So Mad for Mazda’s Rotary Engine Revival

Just what is Mazda's Wankel rotary engine, and how do those spinning triangles work?

How a Knocking Engine Is the Sign of Automotive Innovation

Knock Knock. Who's there? A supercharged, mild hybrid, diesel-inspired gas engine.