This publication is intended to provide information on how a voluntary vehicle inspection program has been set up in the Federal Republic of Germany under the auspices of a voluntary association of vehicle owners, particularly owners of larger motor vehicle fleets. It is also intended to show the advantages enjoyed by the vehicle owner through such an inspection program and how particular demands on the part of the government are fulfilled without additional expenses.Technical knowledge and acumen gained from the inspection of motor vehicles is systematically analysed. The results of this analysis from the years between 1966 and 1969, is presented and explained in tabular form. Analysis was performed on an IBM 360 unit so that the frequency of defects related to the type of vehicle, could be statistically ascertained.DEKRA--Deutscher Kraftfahrzeug-Überwachungs-Verein e. V. (German Motor Vehicle Inspection Association, Reg.)--is active on a very large scale as an independent and neutral inspection organization in the field of vehicle inspection as well as in the field of appraising and examining motor vehicles. This report deals with essential aspects of these activities and the successes to be obtained therefrom.