Elantra Hyundai: 7,450. An EV can save you up to $2,100 over the course of a year when compared to the other models in the example above. How Do I Choose Between An EV And A Hybrid? Mercedes-Benz GLK: 8,250. Sophisticated battery management systems that automatically check temperature, charge levels, and cell balance are standard on modern electric vehicles. Although you never have to lift a hood, that is a type of maintenance. For instance, in order to safeguard the cells when you plug in at home, the system might reduce the rate of charging as it gets closer to full.