i believe Golf Tdi S is the sports model and Golf Tdi se is sedan model.

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

...timing of audi tdi

seat altea tdi

TDI stands for Turbo-charged Direct Injection