In 2013, we drove ~9,000 miles.
The EPA est. fuel economy of our vehicle is 27/33/30 MPG (city/highway/combined). We drove mostly city miles.
Our end-year average fuel economy was 33.4 MPG.
Taking the highs and lows from
9000 / 33.4 = 269.5 gallons
269.5 * 3.65 = $983.5 spent in 2013 on fuel.
9000 / 30 = 300 gallons
300 * 3.65 = $1,095 spent if attaining only EPA est. MPG
Total saved = $111.5.
This may not sound like much. However, keep in mind: I do not make many behavior modifications to my driving. It simply consists of accelerating slower, staying at or under the speed limit, and turning the car off whenever you would normally idle, and slowing down much sooner for stops.
If you want to learn more, visit CleanMPG.com