A navigation support method of an electric vehicle comprising - a step (Step A) of estimating a residual range (D1, D1') of the electric vehicle, - a step of calculating (Step B) a first route for a predetermined destination and a first distance of said first route (D2, D3) to be covered, - and a step of comparing said residual range with said first distance, wherein the first route involves a total altimetry variation, the method being characterized by further comprising the step of multiplying a value of said first distance by a corrective coefficient, which is a function of said total altimetry variation of the first route, wherein said estimation step (Step A/Step A') of the residual range of the electric vehicle comprises: - (Step 2') acquisition of a residual energy (E = SCO * E_N) stored in vehicle batteries, and cyclic execution of the following steps: - (Step 5) calculation of the residual range (A_R) of the electric vehicle as ratio of the residual energy divided by a pre-calculated coefficient of consumption per kilometre and calculation of a residual drain time of the vehicle batteries as ratio of the residual range (A_R) divided by a speed of the electric vehicle, - (Step 6) identification of a corrective parameter of said value of residual energy as a function of said residual drain time, - (Step 2) acquisition of said residual energy and correction of the same by means of said corrective parameter. - a step (Step A) of estimating a residual range (D1, D1') of the electric vehicle, - a step of calculating (Step B) a first route for a predetermined destination and a first distance of said first route (D2, D3) to be covered, - and a step of comparing said residual range with said first distance, wherein the first route involves a total altimetry variation, the method being characterized by further comprising the step of multiplying a value of said first distance by a corrective coefficient, which is a function of said total altimetry variation of the first route, wherein said estimation step (Step A/Step A') of the residual range of the electric vehicle comprises: - (Step 2') acquisition of a residual energy (E = SCO * E_N) stored in vehicle batteries, and - (Step 2') acquisition of a residual energy (E = SCO * E_N) stored in vehicle batteries, and cyclic execution of the following steps: - (Step 5) calculation of the residual range (A_R) of the electric vehicle as ratio of the residual energy divided by a pre-calculated coefficient of consumption per kilometre and calculation of a residual drain time of the vehicle batteries as ratio of the residual range (A_R) divided by a speed of the electric vehicle, - (Step 6) identification of a corrective parameter of said value of residual energy as a function of said residual drain time, - (Step 2) acquisition of said residual energy and correction of the same by means of said corrective parameter. - (Step 5) calculation of the residual range (A_R) of the electric vehicle as ratio of the residual energy divided by a pre-calculated coefficient of consumption per kilometre and calculation of a residual drain time of the vehicle batteries as ratio of the residual range (A_R) divided by a speed of the electric vehicle, - (Step 6) identification of a corrective parameter of said value of residual energy as a function of said residual drain time, - (Step 2) acquisition of said residual energy and correction of the same by means of said corrective parameter.