Mobility kill

A mobility kill (or M-kill) in armoured warfare is a weapon or vehicle that is immobilized, or the act of immobilizing such a target. Tanks and other armoured fighting vehicles can be immobilized by damage to their engines, tracks, or running gear. Because of the mobile nature of modern warfare, such a vehicle is often effectively useless on the battlefield, but it may be salvaged, or repaired and brought back into action quickly.

It is claimed that the Wehrmacht lost more Panther tanks as mobility kills than as catastrophic kills in World War II.