A method for calculating a management setpoint for managing fuel and electric power consumption of a hybrid motor vehicle. The method includes: a) acquiring, via a navigation system, a journey to be made, b) dividing the journey into successive sections, c) acquiring, for each section, attributes characterizing the section, d) deducing a relation linking the estimated fuel consumption of the hybrid motor vehicle over the section to the estimated electric power consumption of the hybrid motor vehicle, e) measuring the actual fuel consumption and the actual electric power consumption of the motor vehicle, f) correcting the relation, taking into account the actual fuel and electric power consumptions, and g) determining an optimal consumption point in each of the corrected relations in order to minimize the fuel consumption of the motor vehicle over the journey as a whole.