This book introduces the structure, maintenance methods, maintenance and troubleshooting methods of automobile engine and chassis in detail. The contents include automobile engine overview, crank-connecting rod mechanism, valve train, lubrication system, cooling system, supply system, engine assembly, running-in and disassembly, clutch, transmission, universal drive axle, steering system, braking system and driving system. According to the structure and maintenance characteristics of modern cars, the maintenance skills are highlighted from the simple to the deep, with novel contents and illustrations. This book can be used as a training material for automobile maintenance workers, and can also be used as a reference for teachers and students of automobile specialty, engineers and technicians engaged in automobile design and manufacturing, automobile transportation management and automobile maintenance management, and automobile mechanics and drivers.