Depends if its a 3.0 or 4.X... I know the bigger engine X5's had problems, but nothing that would of already been taken care of by the dealership. I have a 2003 X5 3.0 and it drives amazingly smooth. Tell your dad to ask for all maintenance records and pay the extra cash to have a dealership to inspect it.
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01 540I - M-sport Premium Package ~ 19' HP Evo Staggerrred ~
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