The mileage estimates are based off of recent trips. You'll find if you actually take a long trip, your estimated miles will decrease a lot slower than your driven miles.
Also, relatively short runs are bad for efficiency of the gas engine. Again, if you drive a long distance, you will likely get many more miles than the prediction.
Also, relatively short runs are bad for efficiency of the gas engine. Again, if you drive a long distance, you will likely get many more miles than the prediction.