The paper presents an algorithm for determining the rational life of the vehicle through relationship quality indicators of the car and cost efficiency. As an integrated indicator of the car is considered a technical factor of use and operating costs determine the efficiency of its use. Methods of operational cost analysis includes a number of features and allows you to achieve comparability of results of the determination run efficient operation of motor vehicles in the process of planning, adjusting and specificity for the analysis of vehicles and organization of control actions in the lifecycle of a vehicle during its operation.