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
Location: N.Miss - Memphis,TN Area
Join Date: Aug 2008
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Mein Auto: '05 X3, '02 M3, '91 E30
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.
"If everything seems under control, you're just not going fast enough"
-Mario Andretti.

River City Bimmers BMW CCA
2005 X3 3.0i ZPP, Htd seats, Htd strng, Black Sapphire on Terracotta.
2002 ///M3 Coupe, Steel Gray Metallic on black leather, HK, three pedals.
1991 E30 325ic, AW, Black Leather, Black top, Three Pedals.
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