The literature review was done on the Suspension System of a vehicle and its technologies followed by a review of NVH in the Automotive Industry focussing on EU regulations and limits of the noise inside the vehicle’s cabin. Preliminary Sound Pressure Levels of the double-stage planetary gearbox are considered when the gearbox transmits torque and speed. Evaluation of Sound Pressure Levels in Electromagnetic Rotary Shock Absorber is carried out using the Numerical Method by formulation of Masuda where the noise of the whole assembly of the Electromagnetic Shock Absorber prototype was mostly considered to be caused by meshing gears of the gearbox.