Unlike the aluminum-bodied Phantom, the 200EX was made from steel, which has a higher tensile strength and can therefore be made thinner. The chassis used an intelligent four corner air suspension system and multi-link aluminium front and rear axles. Systems such as Active Roll Stabilisation, four corner air springs and Variable Damping Control operate as one, imperceptibly, to provide the best possible comfort for occupants. Connected to the main computer, the suspension is able to detect the movement of a single rear passenger from one side of the seat to the other, and compensates accordingly.