How to Distinguish Between Independent Suspension and Non-independent Suspension?

[VanQuinn]

Independent suspension and non-independent suspension can be distinguished as follows: Independent suspension means that each wheel on either side is individually suspended under the frame or body via an elastic suspension system; non-independent suspension means that the wheels on both sides are connected by an integral frame, and the wheels together with the axle are suspended under the frame or body via an elastic suspension system. Independent suspension can mainly be divided into MacPherson strut, double wishbone, multi-link, and link-type strut, with most modern passenger cars adopting independent suspension systems; commonly used non-independent suspensions include torsion beam, trailing arm, and leaf spring suspensions, which are only used in modern passenger cars with strict cost control.

[MacMadelyn]

I've been in the auto repair industry for over a decade and have seen all kinds of suspension systems. The main difference between independent and non-independent suspension lies in how the wheels are connected. In independent suspension, each wheel has its own separate spring and shock absorber system, allowing it to move up and down independently. This means vibrations from bumpy roads aren't transmitted throughout the entire vehicle, resulting in a smoother, more comfortable ride—ideal for city-driving sedans or sports cars. Non-independent suspension, on the other hand, connects the wheels via a solid axle, such as a torsion beam design. When one wheel hits a bump, all wheels vibrate in sync. While simpler to control, this setup delivers a rougher ride and is commonly found in rear-wheel-drive SUVs or budget-friendly vehicles. Telling them apart is straightforward: lift the car and check if the wheels move independently, or test drive over speed bumps to feel the vibration differences. In terms of repair costs, independent suspension is pricier but offers better long-term safety value. Choosing between them depends on your budget and road condition needs.