Method for operating a motor vehicle comprising an electric vehicle drive and an internal combustion engine, the motor vehicle comprising an accumulator for the electric vehicle drive and a fuel storage tank for the internal combustion engine and the motor vehicle having at least one operating parameter, and, based on an adjustment of the operating parameter, the drive of the motor vehicle being controlled by means of the electric vehicle drive and/or the internal combustion engine and charging of the accumulator being controlled by means of the internal combustion engine; in which a charge state of the accumulator and a planned route are recorded; a planned energy content of the accumulator and a planned adjustment of the operating parameter are each determined depending on the planned route; graphic data of a graphical representation are generated, the graphical representation comprising at least one graphic element which displays the planned energy content of the accumulator depending on the planned route, the graphic element representing the development of the energy content of the accumulator along the planned route; and the graphic data is output, characterized in that furthermore, an efficiency value is determined depending on the planned route and the graphical representation comprises a display of the efficiency value depending on the planned route, the graphical representation comprising regions of the energy content which are characterized as more or less efficient by representing an efficient region and an inefficient region, and to determine the efficiency value, it is quantified how efficiently the energy of the vehicle is used when, in the case of the planned adjustment of the operating parameter, a specific energy content is achieved at a position on the route. the motor vehicle comprising an accumulator for the electric vehicle drive and a fuel storage tank for the internal combustion engine and the motor vehicle having at least one operating parameter, and, based on an adjustment of the operating parameter, the drive of the motor vehicle being controlled by means of the electric vehicle drive and/or the internal combustion engine and charging of the accumulator being controlled by means of the internal combustion engine; in which a charge state of the accumulator and a planned route are recorded; a planned energy content of the accumulator and a planned adjustment of the operating parameter are each determined depending on the planned route; graphic data of a graphical representation are generated, the graphical representation comprising at least one graphic element which displays the planned energy content of the accumulator depending on the planned route, the graphic element representing the development of the energy content of the accumulator along the planned route; and the graphic data is output, characterized in that furthermore, an efficiency value is determined depending on the planned route and the graphical representation comprises a display of the efficiency value depending on the planned route, the graphical representation comprising regions of the energy content which are characterized as more or less efficient by representing an efficient region and an inefficient region, and to determine the efficiency value, it is quantified how efficiently the energy of the vehicle is used when, in the case of the planned adjustment of the operating parameter, a specific energy content is achieved at a position on the route.