[P10DET]

Originally posted by greekman
the last 2 times i've filled my car up i reset the trip odometer, to check my mpg. the first time i got around 250 miles and the second time around 265 miles. this works out to only 15 or 16 mpg (15.8 gallon tank, right?). i've driven in city and highway, and usually punch it on the highway. a/c hasen't been used that much. so bottom line, what's my deal? why am i getting such shitty gas milage?

First of all, you cannot go by the miles driven. Did you pay attention to how many gallons you put in your tank when you filled up? If not, you cannot say what your mileage is. If you did indeed note the gallons your car took, and divided it into the miles driven and got that kind of mileage, almost certainly your O2 sensor is kaput.