Multi-link suspension allows the auto designer the ability to incorporate both good ride and good handling in the same vehicle. In its simplest form, multi-link suspension is orthogonal, which means it is possible to alter one parameter in the suspension at a time, without affecting anything else.
Advantages also extend to off-road driving. A multi-link suspension allows the vehicle to flex more; this means simply that the suspension is able to move more easily to conform to the varying angles of off-road driving. Multi-link-equipped vehicles are ideally suited for sports such as desert racing. In desert racing, the use of a good sway bar is needed to counter body roll.
The benefit of the triangulated and double-triangulated arrangement is that they do not need a panhard bar. The benefits of this are increased articulation and potential ease of installation.
Multi-link for solid axle offers a benefit over the independent multi-link in that it is significantly cheaper and much less complex to build.
Multi-link suspensions used to be expensive, but in recent years costs have come down and various interpretations of this solution have found their way even into front-wheel drive hatchbacks. For the most part these multi-link setups have replaced cheaper but effective trailing arms. It can also be used at the front, where one arm is linked to the steering rack, but it’s still less common than a strut. Some BMWs use a type of multi-link system at the front and Hyundai has dabbled in the same thing with its Genesis.
Edit by ascari