Fuel Util will calculate MPG, Cost, or total Mileage since your last fill-up. If you use this every time you fill-up your tank, FuelUtil will calculate at anytime (just enter your most recent odometer reading) how much it will cost to fill the tank back up. Once you fill-up with Gas, FuelUtil will tell you what your Miles per Gallon is; and at the touch of a button will calculate your Average MPG. And if you don't remember what your previous odometer reading was, FuelUtil can calculate that along with how many miles you drove. FuelUtil also has an easy to use database that allows the user to save, delete, and modify existing records. The database stores records by DATE, thus allowing the user to chronologically analyze data according to actual usage. Finally, an analysis screen works in conjunction with the database to analyze data to show Average MPG, Total Cost, Cost Per Mile, and much more.