Compared with a naturally aspirated engine of identical power output, the fuel consumption of a turbocharger engine is lower, as some of the normally wasted exhaust energy contributes to the engine’s efficiency. Due to the lower volumetric displacement of the turbo engine, frictional and thermal losses are less.

The power-to-weight ratio, i.e. kilowatt (power output)/kilograms (engine weight), of the exhaust gas turbocharged engine is much better than that of the naturally aspirated engine.