The structure of car engines is considered, the designs and principles of operation of their mechanisms and systems are described. The basics of electronic control of cars, their units and systems are outlined. It contains information about the design and distinctive features of the engines of modern trucks and cars, including hybrid cars and electric vehicles, buses of domestic and foreign manufacturers.For students of higher education institutions in the technical specialties of the motor transport profile. It will be useful for students of institutions of secondary specialized education, employees of motor transport, car service and car repair organizations.