Quiz: What is the difference between a naturally aspirated engine August 29, 2025 by Alex Turner What is the difference between a naturally aspirated engine and a turbocharged engine? Discover more about Vehicle Engine and Automobile at our home page. A) A naturally aspirated engine relies on atmospheric pressure for air intake, while a turbocharged engine uses a turbine to force in more air. B) A naturally aspirated engine uses a supercharger, whereas a turbocharged engine does not. C) A naturally aspirated engine is always more fuel-efficient than a turbocharged engine. D) A turbocharged engine only functions at high speeds, while a naturally aspirated engine operates efficiently at all speeds. Submit Answer