Automobiles, as any mechanic will tell you, are complicated beasts. Enthusiasts, of course, will have a solid grasp of the jargon. They'll know at a glance what the unusual shape on that road sign ...

Twin turbochargers have their pros and cons, and two main setups try to maximize the pros. Here's the difference between parallel and sequential twin turbos.

Subaru built the only twin turbo flat four in a production car. Here is how this rare EJ20 setup worked, why it struggled, ...