This diploma thesis deals with a problem of insurance frauds in context with manipulated events. It describes the possible causes of committing this crime and the possibility of detection. In conjunction with the objectives of this thesis was carried out extensive experiments of mechanical damage of car bodies with defined tools. Origin of damage and its character were assessed in mechanoskopical terms. After that intentional damage of vehicles was compared with the declared traffic accidents and similar damage occurring at parked vehicles. This part can be used to create at a comparative database of intentional damage to vehicles in solving the technical acceptability of damage that is suitable material for use as an expert activities.