It depends how high class you want your car. A BMW X6 new is
more then $14,000.
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A new key for a BMW can be obtained by contacting your local BMW
dealer. They will contact the factory in Germany that will make you
a new key for your BMW.
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BMW New Six was created in 1968.
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BMW only puts an "X" in front of their model names if it has
AWD. So any "X" class BMW is "4x4".