Lowering a vehicle while having the flexibility to tackle inclined driveways, speed bumps or changing weather conditions, makes hydraulics the No. 1 option for many. A hydraulic suspension system is very versatile because it puts the driver in control of the car's height -- and in quick bursts via a fluid pressure system. While air suspension systems do the same, fluid suspension action is usually considered faster, depending on the power used to create the pressure of the hydraulics.
Tricked-out autos that perform rapid back, front, or one-sided drops and rises often are controlled by fluid hydraulics. This high-performance method of lowering a car comes at a high price, however, and can cost anywhere between $2,000 and $5,000 or more, not including installation and upkeep.