Thread: Low Gas Mileage
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Old 01-05-2013, 02:05 PM
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X3-terrestrial X3-terrestrial is offline
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Quote:
Originally Posted by mlukas161 View Post
Don't take my word for it. :-) the manual recommends replacement at 100,000 miles. For 65 bucks a piece and an hour of time I would at least change the 2 pre cat sensors. I changed mine around 130,000 in our 2004 x3. We average 20 mpg around town and saw 26-27 mpg on our last family road trip. It pays for itself in my opinion.

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What brand and where did you get them for $65 each? That's really a good price.
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