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Old 07-09-2012, 01:21 PM
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tim330i tim330i is offline Founder
Location: SF
Join Date: Dec 2001
Posts: 14,974
Mein Auto: Ti Silver 03 M3
Welcome to! I've moved your thread over to the X5 forum. I would think the 3.0l would be the most economical for fuel but perhaps an X5 owner can chime in.

Good luck,
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