What is the primary purpose of suspension bushings in a vehicle?

Suspension bushings primarily serve to reduce vibration and noise within a vehicle's suspension system. These components are typically made of rubber or a rubber-like material and are located between various suspension parts, such as control arms and the vehicle frame. By absorbing shocks and dampening vibrations, bushings help to ensure a smoother ride and minimize the transfer of road noise and vibrations to the vehicle's cabin.

In addition to enhancing comfort by providing a level of isolation from road imperfections, the reduction of noise and vibration contributes to improved vehicle longevity and performance. The other options, while potentially contributing factors in a broader context of vehicle dynamics and efficiency, do not reflect the primary function of suspension bushings as directly as the reduction of noise and vibration does.