Automotive engines in small, single-prop aircraft aren't anything new. Aviation enthusiast and small aircraft owners have been swapping LS V8s into planes for years. Some of them are DIY projects, ...

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

Back in the 1960s, Subaru brought the boxer engine closer to mass market buyers, after Porsche put it into its very first sports cars. By this time, the automotive world existed mostly on inline and V ...

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 ...

H4 engines are horizontally opposed four-cylinder engines also commonly known by names like flat-four and boxer. For comparison, most four-cylinder automobile engines are upright inline designs. The ...

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 ...

Subaru detailed its next-generation hybrid system as part of a joint conference with Toyota and Mazda. The company will keep its popular boxer engine alive as part of a rethought hybrid system. During ...

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, ...