Abstract: The invention relates to a system for estimating the location of vehicles in parking lots, having: reading means to capture data related to license plates of the cars circulating through the inside of the parking lot through a plurality of control points; and, detection means to record the availability of the spaces through a plurality of sensors, and comprising: input means to manually enter the license plate of a car to be located inside a parking lot, location means to locate the vehicle by means of a control mechanism, based at least on the previously recorded information by the reading means and detection means; and output means to generate a report with the spaces which the vehicle is most likely parked in.