Rubber Cushions in Favor of Vibroacoustics
Most of the noise comes directly from the vibration while the car is in movement, or is indirectly induced by that vibration, which loosens parts generating friction.
Either way, vibrations result in uncomfortable noises heard inside the vehicle.
Current cars use rubber vibration absorbers, such as cushions, which are small parts placed between the engine and the chassis, or the sleeves, strategically placed between the suspension and the chassis.
In addition to absorbing vibrations, these parts also have the function of reducing impacts and the wear of the parts set where they are applied.