OBD2 scan tool to save fuel worth it?

[ezhacker1]

I know it depends on how many miles you would drive in a year, the price of gas, and driving habits to see how much money you could save by driving further per gallon. (sorry if i missed some others)

I found this website to compare saving money through price of gallon and mileage gain.

http://www.fueleconomy.gov/feg/savemoney.shtml

My info would be as follow:
$2.35/gallon
assuming 38 avg mpg (no fill up yet)
assuming increase of 10% with scan tool
estimated 9125 miles driven a year

so i would save $41 a year if i could maintain those variables.

cheapest scan tool iv found is the new Kiwi MPG for $86, so about 2 years of driving just to break even.



I know i am just focusing on the mpg side of these tools and not talking about the other features and conveniences but primarily i would look at any thing that has to do with mpg (fuel left, miles to empty, avg/inst mpg)


Any thoughts?