To provide a low-energy vehicle capable of enhancing the efficiency of running energy by converting vibrational energy wastefully consumed during vehicle running into electricity and auxiliarily using the electricity for running.

A suspension, composed of a coil spring and a shock absorber interposed between a tire and a vehicle body of a vehicle having a function running on a motor, is configured so that either a stationary side or a mover side of a linear power generator is attached to an upper end of the coil spring, while the other is attached to a lower end, and either of the stator side and the mover side has a coil wound around an iron core, while the other is a permanent magnet or an electromagnet, the stator side and the mover side thereof are formed into such a cylindrical shape as to face each other, and the electricity generated by relative sliding motion between the stator side and the mover side by expansion of the coil spring is stored in a battery as an auxiliary energy for driving the motor.