It isn't $10K for 1000 km, it is $10K for driving it off the lot. At that point in time it became a used vehicle. It is tough to hear, but not surprising. You can try and sell it privately, but you aren't going to get new value for it no matter how lucky you get. Tough break. Do you have to switch to the X5?

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue