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 ...

Sometimes, the terms boxer engine and flat engine are used interchangeably, even though the two are not the same. What's the difference? Which one is better?

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 ...

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 ...