Opposed Piston Diesel Engines Are Crazy Efficient

The engine in this video is a 2.7L 3-cylinder, producing 270HP and 480 lb-ft of torque.
Research has shown 2-stroke opposed Piston engines to be widely efficient. 3-cylinder designs are the most efficient, and its possible to achieve brake thermal efficiencies as high as 55%, a massive improvement for road car engines.