A method of assisting sellers and buyers in the sale and purchase of a vehicle is provided. The method may comprise the steps of communicating a vehicle's diagnostic data (e.g., OBD codes, etc.) with a provider. The method may further comprise the step of analyzing the communicated diagnostic data. The...http://www.google.co.uk/patents/US7603293?utm_source=gb-gplus-sharePatent US7603293 - Method of providing diagnostic information in connection with the sale of pre-owned vehicles
