Quote:
Originally Posted by willywi
sounds like I got some super low mpg I already cleaned the valve, changed coil, changed spark plug, air filter, cleaned MAF not sure what else to do to improve mpg. I average about 10.8 mph.
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You clearly have something wrong. Whatever it is, the long-term fuel cost of that low mileage is worth getting it looked at even if it costs quite a bit. An X3 is not that exciting that I would keep one if it was getting that mpg. My 2014 X3 averages like 16.5 on a tank that is all around-town errands. But any mostly highway trip is very high 20s. You are seriously getting way worse mileage than my 650 which weighs way more than an X3. In pure stop and go errands on city streets it averages about 14 mpg.