Although Subaru didn't invent flat engines, and isn't the only automaker still using them, those motors have become a defining characteristic of the brand. (The same can be said for all-wheel drive, ...

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

You know it when you hear it: the grumbly, all-too-unmistakable sound of an approaching Subaru and its characteristic flat-four-cylinder engine. Since the mid-1960s, the boxer engine has been a ...

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 ...

In Porsche’s long and storied history, few mechanical creations have reached the mythical status of the four-cam flat-four engine. Born in the crucible of motorsport in the early 1950s, it was a ...

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 ...