This review explores strategies for reducing automobile fuel consumption, focusing on factors influencing energy efficiency and fuel use in road transportation. The article emphasizes the importance of improving fuel efficiency to enhance energy security, reduce economic vulnerability, and minimize environmental impact. It discusses both direct and indirect factors affecting fuel consumption, including vehicle design, operational behaviors, and policy frameworks. Key factors include vehicle mass, aerodynamics, engine efficiency, and driver behavior. The review also highlights the role of technological advancements in internal combustion engines (ICEs), alternative fuels, and energy recovery systems in improving fuel efficiency. It examines the impact of lightweighting, advanced engine technologies, and alternative fuels such as biofuels and hydrogen on reducing fuel consumption. The study also addresses the challenges and opportunities in implementing fuel-saving technologies, emphasizing the need for integrated approaches that combine technological innovation, policy measures, and sustainable practices. The review concludes that a comprehensive understanding of fuel consumption factors is essential for developing effective strategies to promote sustainable and efficient road transportation.This review explores strategies for reducing automobile fuel consumption, focusing on factors influencing energy efficiency and fuel use in road transportation. The article emphasizes the importance of improving fuel efficiency to enhance energy security, reduce economic vulnerability, and minimize environmental impact. It discusses both direct and indirect factors affecting fuel consumption, including vehicle design, operational behaviors, and policy frameworks. Key factors include vehicle mass, aerodynamics, engine efficiency, and driver behavior. The review also highlights the role of technological advancements in internal combustion engines (ICEs), alternative fuels, and energy recovery systems in improving fuel efficiency. It examines the impact of lightweighting, advanced engine technologies, and alternative fuels such as biofuels and hydrogen on reducing fuel consumption. The study also addresses the challenges and opportunities in implementing fuel-saving technologies, emphasizing the need for integrated approaches that combine technological innovation, policy measures, and sustainable practices. The review concludes that a comprehensive understanding of fuel consumption factors is essential for developing effective strategies to promote sustainable and efficient road transportation.