Abstract: EV energy consumption was affected by driver's driving characteristic and could be lowered by perfect driving manners. The difference of energy consumption driving by different drivers was tested and driving characters of affecting the difference were discussed according to test results of electric vans running in Ji'nan city. Factors influencing EV energy consumption, such as vehicle acceleration, speed, energy recovery, driving cycle and motor overload were tested and analyzed. By vehicle controller, motor torque and over-speed were controlled, and therefore driving parameters to which energy consumption was sensitive were optimized. The test of optimized electric vans is carried out, and results indicated that energy consumption of optimized vans is lowered and insensitive to different drivers. Compared to the original one, energy consumption of optimized vans could be decreased as more as 34.94%.