page_title: Naturally aspirated engine
hierarchical_section_title: Naturally aspirated engine
caption_attribution_description: English: A Mercedes-Benz OM601 naturally aspirated diesel engine fitted in a W201 190D Mercedes-Benz passenger car.
context_page_description: A naturally aspirated engine is an internal combustion engine in which air intake depends solely on atmospheric pressure and which does not rely on air forced through a turbocharger or a supercharger. Many sports cars use naturally aspirated engines due to their lack of a turbo lag. The main advantage of a naturally aspirated engine is they are usually more reliable than turbocharged or supercharged engines. Most automobile gasoline engines, as well as many small engines used for non-automotive purposes, are naturally aspirated. Most modern diesel engines powering highway vehicles are turbocharged to produce a better power-to-weight ratio. They also have better fuel efficiency and lower exhaust emissions.
context_section_description: A naturally aspirated engine is an internal combustion engine in which air intake depends solely on atmospheric pressure and which does not rely on air forced through a turbocharger or a supercharger. Many sports cars use naturally aspirated engines due to their lack of a turbo lag. The main advantage of a naturally aspirated engine is they are usually more reliable than turbocharged or supercharged engines. Most automobile gasoline engines, as well as many small engines used for non-automotive purposes, are naturally aspirated.  Most modern diesel engines powering highway vehicles are turbocharged to produce a better power-to-weight ratio. They also have better fuel efficiency and lower exhaust emissions.
caption: A Mercedes-Benz OM601 naturally aspirated diesel engine (no turbocharger or supercharger)
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