A practical manual for young readers explaining automobile construction, operation, and maintenance. It surveys development and components—from frames, springs, axles, wheels, and tires to steering, brakes, differentials, drives, clutches and varied transmissions—using clear diagrams and descriptions. It details internal combustion engines, cooling, carburetors, ignition and electrical systems and offers guidance on tire care, lubrication, alignment, and repairs. Chapters explain power transmission methods such as chain and shaft drives, and examine advantages of gear types including planetary and frictional systems. Emphasis on mechanical function, comparative advantages of designs, and step-by-step handling aims to equip readers to understand and service motor vehicles.