Gas Milage question.......

[LWM]

Is there a "proper" way to reset your mpg reading? Should I do it while driving or before I start to drive?

Both of these will have the same effect, if you reset before you start driving you will have that 1 mile where you used more fuel to get up to speed but the rest will quickly adjust to make up for that little bit of extra fuel. I say just push the button, you will get the most acurate at the moment reading possible.

[Doc in AZ]

my wife drives a nissan and the computer gives an instant fuel economy as well as a long term.

while displaying in the instant mode when you floor it the reading is single digits, when you let off and coast it goes up to 60mpg.

if you display the long term it will give you the average since the last reset. the longer you drive between resetting it the more accurate "average" you will get. if you reset it every 10 minutes you can maniuplate and MPG you want.

[IamJEEP]

my wife drives a nissan and the computer gives an instant fuel economy as well as a long term.

while displaying in the instant mode when you floor it the reading is single digits, when you let off and coast it goes up to 60mpg.

if you display the long term it will give you the average since the last reset. the longer you drive between resetting it the more accurate "average" you will get. if you reset it every 10 minutes you can maniuplate and MPG you want.

I usually reset between fill-ups.

I've been getting 22mpg highway and 12mpg city. Is it supposed to be that much of a spread?

[Doc in AZ]

sounds like you are resetting it a lot to know what your city/hwy mileage is.... but to answer your question it all depends on how you drive.

my 06 dodge ram had the same computer your jeep has. i reset between fill ups. i averaged 15mpg with a combination of city/hwy driving. on road trips i averaged closer to 20. my wife driving the same truck averaged about 12 city and 16 hwy.