A vehicle and a manufacturing method thereof is provided in which separation of positively charged airflow from a positively charged surface of a vehicle body can be prevented. A vehicle body 30 is insulated from a road surface, and positive static charges accumulate on the vehicle body during propulsion. The vehicle comprises a self-discharge device 12, 31 that is adapted to decrease a positive potential of at least any one of specific points at which positively charged airflow flowing along a vehicle surface deviates therefrom, during propulsion of the vehicle, by discharging static electricity to produce negative ions according to the positive potential of the specific point.