The textbook discusses issues related to the design features of vehicles running on gaseous fuels. Information is presented on the operating principles and design of components and assemblies of gas cylinder equipment from major domestic manufacturers. The technology for installing gas equipment on cars is outlined. The basics of maintenance and repair and recommendations for finding typical faults in gas systems and eliminating them are given. For students of primary vocational education institutions who are mastering the professions of “Car repairman” and “Auto mechanic”.