I have an 01 .3.0 X5, it has 216,668 on the original motor and trans. It has been maintained to the highest standards and therefore still drives beautifully.
However, in the future should either engine or tranny fail what is the final year going forward I can swap out an engine/transmission in the 3.0 line? 04? 08?
Has anyone done this? Costly? Thank you.

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X5 3.0 AUTO -2001 - 238,000 miles