My car is a Mk4 Jetta, but its a pretty old design of tdi engine, and its a 15 year car, but the common rail engines and engines would break heads like no tomorrow, DPF filters that clog, and destroy your turbo and valves, warped blocks, half the problem is emissions control systems.. None the less BMW is pretty expensive for crap parts all around..
Even better is Jaguars costing 6 figures made on BMW, VW and Ford platforms and then covered in leather with hot glue and staples lul.