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

Newly-developed six-cylinder twin-turbo engine replaces retired EJ20 as Subaru aims for first GT300 title since ...

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, ...

This Subaru Impreza STi runs a stroker EJ20 engine producing over 800 horsepower, revving to 8500rpm. Onboard footage captures flat shifting through a sequential gearbox, aggressive boost response and ...