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Old 02-04-2012, 05:58 PM
1stbmwx3 1stbmwx3 is offline
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Location: Washington
 
Join Date: Jan 2011
Posts: 86
Mein Auto: 2007 X3
I've noticed around 70-75 mph seems to be a good economical speed range. I travel between Seattle and Chico, CA often. The mountain passes put a dent in my mpg. I think my best was 24.2.
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