Abstract: A system (1) and method estimates the driving style of a vehicle. The system includes; a device for measuring the longitudinal acceleration (ax) and lateral acceleration (ay) of a vehicle along a measuring path; a memory module (7) in which pairs of the admissible limit values of the longitudinal and lateral accelerations are stored. Such values implement an admissible acceleration curve, closed in a longitudinal acceleration-lateral acceleration plane; an elaboration module (6) configured for: associating to each measured longitudinal acceleration-lateral acceleration pair of the vehicle a corresponding longitudinal acceleration-lateral acceleration pair on said admissible acceleration curve; and providing an indication of the driving style on the basis of the trend of position of the measured longitudinal acceleration-lateral acceleration pair with respect to the corresponding longitudinal acceleration-lateral acceleration pair on the admissible acceleration curve along the measuring path.