This could be an issue with the fuel gauge sending unit. I have a vehicle with the gas gauge that stays near "full" forever, then drops very quickly from "half" to "empty". The sending unit simply isn't linear.
Watch the number of gallons of gas you buy and the mileage you drive, then calculate your fuel mileage. If it's normal, suspect the sending unit, not the engine.
Tuesday, June 18th, 2013 AT 10:37 AM