General Motors faces a class-action lawsuit alleging that its turbocharged 1.2-liter three-cylinder engine, installed in popular compact SUVs like the Chevrolet Trailblazer and Buick Encore GX, ...

Inline-fours offer smoother operation and reliability; three-cylinders are lighter and more efficient.

In the era of downsizing, automakers are gradually moving away from high-cylinder engines. As a result, they are increasingly in favor of smaller, often turbocharged or hybridized powertrains. A few ...