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?


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

Question type: Maintenance & Repair

4 Answers


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.

2 of 2 people found this helpful.

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

1 of 1 people found this helpful.

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


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

Your Answer

Grand Cherokee

Looking for a Used Grand Cherokee in your area?

CarGurus has 73,742 nationwide Grand Cherokee listings starting at $500.


Jeep Grand Cherokee Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Dodge Durango
231 Great Deals out of 24,568 listings starting at $1,500
Used Ford Explorer
830 Great Deals out of 64,217 listings starting at $2,000
Used Jeep Wrangler
305 Great Deals out of 20,114 listings starting at $2,900
Used Toyota 4Runner
303 Great Deals out of 30,850 listings starting at $2,595
Used Chevrolet Tahoe
633 Great Deals out of 37,457 listings starting at $795
Used Ford F-150
2,558 Great Deals out of 220,223 listings starting at $1,222
Used Chevrolet Silverado 1500
2,199 Great Deals out of 151,084 listings starting at $1,499
Used Chevrolet Camaro
242 Great Deals out of 30,118 listings starting at $4,980
Used Ford Mustang
291 Great Deals out of 38,369 listings starting at $1,995
Used BMW X5
318 Great Deals out of 17,285 listings starting at $2,991

Used Cars For Sale

2018 Jeep Grand Cherokee For Sale
33 Great Deals out of 40,712 listings starting at $15,995
2017 Jeep Grand Cherokee For Sale
183 Great Deals out of 6,377 listings starting at $20,595
2016 Jeep Grand Cherokee For Sale
65 Great Deals out of 2,100 listings starting at $18,444
2015 Jeep Grand Cherokee For Sale
287 Great Deals out of 9,240 listings starting at $14,795
2014 Jeep Grand Cherokee For Sale
69 Great Deals out of 4,152 listings starting at $12,498

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.