thanks i forgot about the partial fill but i'm thinking that is still incorrect. i must have entered something wrong. i put in a almost full tank at 7 gallons and it figures in my calculator to be 18 mpg for that tank. it is hard to remember as i don't put gas in this car very often we drive it about one day a week at the mos in the summer and o days in the cold weather.
to answer the second reply i think 18 is a better figure. and that is low for the little car. i filler it friday 7-3-15 and it is now on a road trip so maybe when we get done i can get a better number.