Hp/L is a useful metric for comparing engines because it takes into account both power and displacement. A higher hp/L indicates a more powerful engine relative to its size. For instance, a 2-liter engine with 200 horsepower (100 hp/L) is a more potent engine than a 3-liter engine with the same horsepower (67 hp/L).
Hp/L is not the only metric that is used to measure an engine's performance. Other metrics include torque, fuel economy, and emissions. However, hp/L provides a quick and easy way to compare the power output of different engines.
