Motor vehicle maintenance system: maintenance organization, conception and technologies. Motor vehicle diagnostics: diagnostic parameters and symptoms, diagnostics methods. Organization of service and repair workshops: type, size and location of workshop; type of technology processes. Malfunctions of motor vehicle components and their causes. Diagnostics, testing and examination of powertrain. Wear and other forms of IC engine parts damage and repair methods: piston-cylinder assembly, valve gear, crankshaft and bearings, sealing. Periodic and non-periodic intervention in the transmission, braking system, steering system, suspension system and other vital elements of the vehicle. Analysis of relation between the causes and consequences in typical cases of motor vehicle failures and damages.