System and method for assessing objects such as vehicles, wherein a value estimation model is determined for vehicles on a basis of data representing characteristics of a plurality of vehicles, the model including a plurality of parameters to be determined and a plurality of explanatory variables associated with the parameters and defined on the basis of the characteristics, wherein age and/or mileage of vehicles is configured to affect the value estimate, the value estimate being a dependent variable in the model, and wherein a unit for producing a value estimate for a target vehicle on the basis of the model is configured to perform an action (508, 510, 512, 513, 518, 524, 604, 710) to facilitate comparison of the value estimate to other valuation information related to the particular target vehicle or some other vehicle.