How do I account for missed fuel-ups?

If you use odometer tracking to track your distance between fuel-ups, chances are you're bound to miss tracking a fuel-up here and there. If you do miss a fuel-up, suddenly the number of miles you've traveled can double or triple when you add a new entry, throwing off your statistics. If you know you've missed a fuel-up, you can check the I missed a fuel-up box when you add your fuel-up data, and Fuelly will start tracking miles again with your next fuel-up.