VEHICLE SUSPENSION

A suspension (S) for a vehicle () includes a rod-shaped torsion spring (), an arm (), a motor (M), and a deceleration unit (G). The torsion spring () is rotatably supported by the vehicle (). The arm () extends in a front-rear direction of the vehicle () and swingably supports a wheel of the vehicle () by using biasing force of the torsion spring (). The motor (M) is fixed on a side of the vehicle (). The deceleration unit (G) decelerates rotation of the motor (M), and rotationally drives the torsion spring () or a swing shaft () of the arm (). An output shaft (Z) of the deceleration unit (G) is provided coaxially with the torsion spring () or the swing shaft ().