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 car (5), wherein an image (2) is displayed on a graphical display device (1) by means of a control device (4), the control device receives data from at least one sensor (53) in a predetermined control period and compares it with a number of reference values, and the image comprises a plurality of sections (211) corresponding to said reference values and a graphical element (23) that passes between the plurality of sections based on the aforementioned comparison. The driver can thus view the previous data related to the driving task, and gauge if said driving task is improving or worsening.