This Subaru Impreza STi runs a stroker EJ20 engine producing over 800 horsepower, revving to 8500rpm. Onboard footage ...

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, ...

Car geeks love a weird flex with their engines, and this one comes straight from Japan. Imagine a flat-four boxer engine with two turbos working in sequence, chasing boost like a rally stage start.