This study compares the advantages of new energy vehicles and internal combustion engines to achieve low carbon emissions and zero pollution.Internal combustion engines are predicted to remain the main driving force of automobiles for a long time in the future.High-efficiency,energy-saving,and clean new technologies for the automobile internal combustion engine are summarized herein,including advanced combustion,turbocharging and small enhancement,multi-system and multi-variable control,waste heat recovery,intelligent cylinder stop,and cylinder water spraying technology,among others.New internal combustion engine technologies with great potential have endlessly emerged in response to the pressure of environmental pollution,global warming,and energy crisis.The internal combustion engine industry in China cannot be slack because it is an important part of the advancement of Chinas automobile industry toward automobile power.