After my fifth visit to BMW dealer for the same engine mis-fire issue on cylinder #5, dealer now told me that they are going to submit the paper work to BMWNA to buy back my 2004 X5 4.4i. Officially, it calls "trade-in assistant" program with warranty related limo car(s). From what I understand from the dealer, BMWNA will "buy" back the car with proper value while I can purchase another BMW with invoice cost.......

Does anyone had experience with that? Anything negotiable?

Any advises are greatly appreciated.