Quiz: How does a turbocharger increase an engine’s efficiency and February 28, 2025 by Alex Turner How does a turbocharger increase an engine’s efficiency and power output? Discover more about Vehicle Engine and Automobile at our home page. A) By using exhaust gases to spin a turbine, which compresses incoming air. B) By injecting more fuel directly into the combustion chamber. C) By cooling the engine to reduce the temperature of combustion. D) By altering the engine’s timing to increase RPM. Submit Answer