Discover how Porsche's air-cooled flat-six boxer engine, from 1963-1998, defined the 911 and became the brand's signature ...

Subaru nearly lost a generation of buyers over one fixable flaw.

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.

Typically, when one pictures a passenger car engine with two heads, the first thought that comes to mind is a V6. These ubiquitous engines are almost universally found within just about every major ...