If you like to keep track of your car's fuel, maintenance, and mileage, this A6 sized planner insert is just the thing. Record the date, description, and odometer reading for any maintenance, new tires, changes, etc. For fuel, write down the date, number of gallons, and the odometer reading. In the description area you can keep track of the price per gallon. The back of each page is lined for keeping notes.