The book contains the recommendations of experienced masters for the diagnosis of malfunctions, repair and operation of passenger domestic and foreign cars . The most common malfunctions of units and systems of cars, methods of their detection and technology of soaking are considered. The main reasons for the change in the technical condition of cars, methods of checking their technical condition and maintenance . Provides basic information about materials for maintenance and repair. The book will be useful as a practical tool for students of institutions, primary vocational education and secondary specialized educational institutions, as well as car mechanics and car owners.