What is difference between landrover 200 tdi and discovery tdi?

there is no difference between a landrover 200 tdi and a discovery tdi ! A 200tdi is a discovery tdi . I think you mean what is the difference between a 200 tdi and a 300 tdi,in which case not a lot ,apart from slightly different engine and box ,rear lights and bumper and head lights and grille. basically the same motor apart from these few things