What are the differences between independent suspension and semi-independent suspension?

[Debra]

Here are the differences between independent suspension and semi-independent suspension: 1. Comfort. Non-independent suspension connects both wheels with a rigid axle, so when one wheel encounters bumps, the other wheel is also affected, resulting in poorer vehicle comfort. In contrast, independent suspension allows the left and right wheels to operate independently. When one wheel encounters road irregularities, it does not affect the other wheel, providing better vehicle comfort. 2. Handling. Independent suspension offers better handling, with the front suspension having a greater impact on the vehicle's handling performance, while the rear suspension has a slightly smaller effect. 3. Cost and cabin space. Compared to non-independent suspension, independent suspension, although not necessarily high-tech, has a more complex structure and higher manufacturing costs. While it improves comfort, it also increases the vehicle's price. Additionally, the complex suspension structure may occupy some cabin space, making the already limited interior space of compact cars even more cramped. Therefore, most compact cars use non-independent rear suspension.

[StIvan]

I've driven many different cars before. Independent suspension allows each wheel to move up and down individually, making the ride especially smooth on bumpy city roads, without causing the rear end to wobble. Semi-independent suspension is different, like the torsion beam type, where the wheels on both sides are connected. When one wheel goes over a bump, the other side shakes too, making the whole cabin vibrate on rural dirt roads, which is particularly uncomfortable. In terms of handling, independent suspension provides better grip during turns, with less body roll, giving more confidence during high-speed lane changes. Independent suspension is more expensive and often found in luxury or performance cars. It's a bit more complex to maintain, but if well-tuned, it can last ten years without issues. Semi-independent suspension is cheaper and easier to install, commonly used in budget-friendly family cars like economy sedans. It simplifies space layout but sacrifices comfort, especially for rear passengers who often complain about the bumpiness—this is the most noticeable difference. If you frequently drive long distances, choosing independent suspension will be more hassle-free.