This study investigates the mass reduction of the Dayan Chock C1 electric vehicle by replacing lead-acid batteries with lithium-ion batteries in order to improve its overall efficiency. The results are validated through dynamic tests on specific routes and through evaluations on specialized test rigs. The EUSA-3000 shock absorber test rig and Brak-3000 Brake tester are used to measure suspension efficiency and braking distance under various operating conditions. The research analyses how mass reduction affects vehicle range and behaviors under real driving conditions. The methodology used is experimental, with evaluations carried out under specific altitude conditions in Tumbaco and following the standard WLTP driving cycles. Inductive and deductive approaches are applied to ensure data reliability.