I have a 03 Grand Cherokee Laredo v-6. The Gas mileage has decreased dramatically to 13 MPG. What would cause this? Could the Message Center be displaying incorrect data?
35

Asked by vhandy Dec 03, 2007 at 10:15 AM about the 2003 Jeep Grand Cherokee

Question type: Maintenance & Repair

4 Answers
83,795

littlehorn answered 16 years ago

It's entirely possible you are getting incorrect data from the Message center. Try resetting it and drive for a few tanks of gas to get your average fuel mileage over that time. You might also be due for a new air filter, tune-up, and possibly an oxygen sensor. These will help increase your gas mileage. Check your tires to see if they are low air pressure -- if the air pressure is low it can rob 2-3 mpg from your driving.

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vhandy answered 16 years ago

Thanks for your help. Do you know how to reset the Message center?

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aaacar answered 11 years ago

how many mies on vehicle,should it be 100000 or mre catilytic con verter may be warnout.

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Daniel answered 11 years ago

might need an oil change, too. A Mopar(Chrysler/Dodge/Jeep) dealer will do that for probly $30, takes less than a half hour

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