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Old 09-11-2012, 07:15 PM
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mlukas161 mlukas161 is online now
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Location: WNY
 
Join Date: Oct 2008
Posts: 899
Mein Auto: 03 330i, 04 X3
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Originally Posted by mlukas161 View Post
Average 21 mpg in our 2004 x3 3.0i with 134,000 miles. 5 speed auto transmission.
A quick update. I just replaced the O2 sensors at 134,000 and notice a huge difference in gas mileage. Just drove down to the obx and averaged 27 mpg with 4 adults, our 2 year old, and a full cargo area of luggage! I'm really impressed with the difference that the new O2 sensors made.

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