Tailgate doors or boot as they are commonly referred to allow access to the rear of vehicle and are commonly found on hatchbacks or 4x4s.
Like any other door on a vehicle, daily use can cause general wear and over time which can cause the tailgate to not function correctly or become unsightly with scratches, discolouring or chipped paint. Like most body parts, a reputable bodyshop can restore the appearance of your tailgate without the need to replace.
When a tailgate does not open or close correctly, the problem often lies elsewhere. A faulty tailgate latch, missing screws, or tailgate struts is often the cause of the problem.
If you have checked all these potential factors and your tailgate does not function as it should or the panel has sustained impact causing it to misshape or warp then it is most likely your tailgate will need replacing.