So for about the past year or so I have been getting around 11mpg. I have no idea why, but it just sucks like none other. I get about 130 miles to a tank which works out to 11mpg. I have already replaced my inline gas filter, spark plug, cap and rotor, air filter, TPS, CPS, and 02 sensor. I don't get it because I don't drive with a lead foot, and the motor runs just fine.