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.

We explain why Subaru’s boxer engine layout is especially well-suited for off-roading, from stability to traction advantages. Subaru continues using boxer engines for low center of gravity and ...

For over three decades, the EJ20 was the workhorse of Subaru, as the 2.0-liter flat four boxer engine would power models throughout the brand's lineup. However, it's the engine's generations of ...

Having the right tool for the job makes all the difference, so for 2026, we have compiled a shortlist of the best engines that are top performers in the categories listed below. These categories are a ...

Subaru’s claim to fame would be its performance-oriented reputation. Starting as rugged, dependable, and unbreakable cars, quickly translated into success in the world of motorsports, particularly ...

When you think of boxer engines with their flat, horizontally opposed architecture, it's likely that vintage Volkswagens such as the original Beetle spring to mind. Or perhaps Porsche, which named an ...