A new book by a famous Czechoslovak specialist discusses a wide range of problems associated with improving the fuel efficiency of a car. The issues of improving engine characteristics, improving the chassis and aerodynamic qualities of the body, optimizing the designs of individual units and assemblies of the car are analyzed. Attention is paid to the development of new types of cars with power plants based on the use of alternative fuels, electric batteries, hybrid drives, etc. For engineering and technical workers of the automotive industry, university students and students of technical schools studying the automotive industry; can be useful to a wide range of readers interested in the problems of automotive development.