The plastic cover of a Subaru Boxer engine showing the Subaru constellation logo - Topuria Design/Shutterstock Flat engines are horizontally-opposed piston engines, and this group includes Boxer ...

How boxer engines work, why they’re not just “flat” engines, and a 120-year evolution traced from the 1899 Benz to the latest Porsche and Subaru boxers. Boxer engines feature flat, opposing pistons ...

In 1859, an event as significant as the advent of the wheel took place in Etienne Lenoir's workshop. The Belgian inventor converted a steam engine to ignite a mix of air and coal gas via a two-stroke ...

You're a gearhead. You know to chuckle knowingly and condescendingly when some dumbass refers to the "V4" in their Honda Civic. You know your stuff. You know what a flat engine is, too. It's an ...

Flat engines are horizontally-opposed piston engines, and this group includes Boxer engines, but not opposed-piston engines like the Cummins 14.3L Advanced Combat Engine (ACE) designed to power tanks.