Unibody damage is irreversible damage that happens to a unitized frame of an automobile due to an accident or collision. A unitized body frame is created by welding sheet metal together.
The welded frame is designed to protect passengers by crumbling upon impact. Although a unibody frame absorbs impact energy of a collision better than a body-on-frame constructed vehicle, the damage to the unibody frame is permanent and can compromise the structural safety of the vehicle.
Unibody frame damage can cause other mechanical problems to the vehicle. Performing a frame inspection prior to purchasing a used vehicle can prevent a buyer from experiencing chronic mechanical problems down the road.