Before you can inprove your gas mileage, you have to know what it really is. With this easy to use gas log, you can have your MPG calculated each time you fill your tank. Missed one fill up? Don't worry. Also find out your driving habits. About how many miles do you really drive a year? Look at the chart below. Once I started filling my tank up each time, a consistant MPG is being calculated. Now I can see how the grade of gas or my tire pressure effects my MPG. And look at that! I drive less then 12000 miles per year on average now! Great. Also the price of gas is falling! Even better. Oh, you caught that? Yes I did drive over 1500 miles in 3 days. Create a FREE account NOW!!