This is sounds like it may be a nightmare :-) but I a reluctant to part with it after 15 years of usage! I will have an official word :-( Always risky, the answer is often NO! I have lived here for a year but the car is still in England so In theory I can use it for a least six months? . The bit about German road tax, if you are paying it in another Eu country would it apply.? Then there is Brexit....BAH!
I have an old triumph dolomite sprint 1976. After this length of time many parts have been changed /improved eg weber carbs, upgraded shock absorbers various engine internals . wildwood brake kit. I have no problem with getting a British MOT. Would I be able to get a German TÜV? Or would It just be easier to go back to England get a British one., and come back again. As many of these parts are quite old I doubt they have any TÜV markings. I was also looking at a nice GT6 ( 1972) which has had a 3.500cc rover fitted instead of the standard6 . Would this be impossible to register here?