METHOD AND SYSTEM FOR VERIFYING VEHICLE USAGE DATA

In a method for verifying vehicle usage data reflecting usage of vehicle (2) a vehicle transmits vehicle data (S1, S1', S1", S2) to an observer entity (3.x) when the vehicle (2) and the observer entity (3.x) are in proximity, wherein the vehicle data includes unique vehicle identification information and proximity is defined by an upper threshold for a distance between the vehicle (2) and the observer entity (3.x). The observer entity (3.x) adds data to the vehicle data, the added data including an indication of a position of the observer entity (3.x) and a time stamp indicating a time of reception of the vehicle data to generate joint data. The joint data (S4) is then transmitted to an external database (6) and the aforementioned steps are repeated at least once. From the added data a usage estimation value is calculated which is a measure for usage of the vehicle (2) and which is compared with the vehicle usage data (S16) retrieved from the vehicle (2). Finally, information on validity of the vehicle usage data at least on the basis of the comparison result is generated and output.