Compression is only one thing Hyundai wants to be able to adjust.

Automotive history is full of dead ends that eventually get lost to time. Seventy years ago, the free-piston engine was ...

Formula 1 has always been a sport where the rulebook is treated less like a fence and more like a climbing frame. The latest example is a set of 3D‑printed pistons that let teams flirt with the ...

After decades of development, Nissan's VC-Turbo promised to revolutionize engines. But can it compete with Toyota's hybrids?