Method for displaying information pertaining to efficient driving of a motor vehicle

A method and associated device for displaying information pertaining to efficient driving of a motor vehicle (5), wherein an image (2) is displayed on a graphical display device (1) by means of a control device (4), wherein said graphical image comprises a main graphical element (231) that moves away from a position of equilibrium (22) at a distance proportional to a variation in vehicle speed (5). In this way, the information related to the decrease in driving efficiency is presented in a highly visual and intuitive manner, particularly in respect of the more or less abrupt variations in vehicle speed.