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.

Out of all the internal combustion engines that have existed, the boxer engine has to be one of the most distinctive. Nothing else is quite like it, and it's somehow managed to survive to the present ...

If you've ever taken a closer look at small planes or seen one being maintained, you might have spotted something interesting under the hood. The engine layout is often wide and flat, and not stacked ...

What is a flat four? What is a boxer engine? This video will explain the benefits of a flat engine, specifically a flat four engine with horizontally opposed pistons. The main advantages of a boxer ...

The horizontally opposed engine was created in 1897, and Subaru is one of only a few automakers to rely almost entirely on its layout. Unlike more traditional engines, which align their pistons in a V ...

If an engine has four cylinders, chances are they’re arranged in-line—unless that engine was made by Subaru, of course. A boxer-four is second only to all-wheel drive as a Subaru calling card. But the ...

In 1968, Subaru introduced the diminutive 360 as an inexpensive economy car: "Cheap and Ugly" (Subaru's words, not mine). Only seven years later, the brand made a big move with the launch of its 4WD ...

Subaru and Porsche aren’t the only ones with boxer engines these days. Even Chinese automaker BYD has built one for its ultra-lux flagship sedan. It’s a bit of a surprise, given that BYD already has ...

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 ...