To provide a suspension for an electrical vehicle having less restriction of a vertical stroke, increasing a damper effect in a tandem wheel suspension wherein damper mechanism is light and capable of recovering the energy.

In the hydropneumatic suspension having a hydropneumatic cylinder 106, 107 installed in both wheels of the tandem wheel suspension respectively and applied with a vertical load from the wheel, and a reservoir 117 communicating via a fluid chamber and the passage communicating the fluid chamber of the hydropneumatic cylinders 106, 107, the hydropneumatic cylinders 106, 107 are comprised of air chamber 138, 139, pistons 108, 109, orifices 136, 137 installed in the fluid chamber and the fluid filled in the fluid chamber.