What factors influence ground clearance decisions in vehicle design?

Ground clearance affects off-road capability, aerodynamics, ingress/egress, and ride comfort. Higher clearance improves off-road ability and floodwater wading but increases center of gravity and aerodynamic drag. Lower clearance improves aero and handling but limits rough road capability. Typical values: sports cars 100-120mm, sedans 140-160mm, crossovers 170-200mm, off-road SUVs 220-280mm. Air suspension can provide variable clearance to optimize for different conditions.