Ok today I filled up for the 2nd time after getting 31's. To my dissapointment I averaged 13.7 mpg??? WTF?! Before I got the tires I only got 16-17 mpg. The rpm hardly gets above 3k and it's mostly country road driving no offroading. It's an Edge so it sits higher creating more drag and larger tires decrease the gas mileage but come on it's a 2wd, 3.0L V6 with 4.10 gears, I expect at least 18 mpg. Any suggestions of what could be wrong to make me get this kind of gas mileage or suggestions on items to buy to make it better?

 

Itz getting colder too. It will get better in the summer when the air going in your motor is warmer. I got the same thing if not worse.

 

Luke is right, mileage takes a dump in the winter. And being that you've got a 2002, it might be time for a tune up if you haven't done it already, sparks, wires, fluids, etc...

 

You might want to check your air filter and spark plugs.....Those things will have an effect on your gas mileage if they are dirty or bad.............Also, I thought cold air was better for engine performance......

 

Tyler, im experiencing the same problem. I got my 31's on last month and absolutly love them, but I lost 3-4 mpg or about 50-70 miles per tank. I thought 4.10's and 31's were a good combo, but i guess the 3.0 does struggle compaired to the 4.0. I also get bout 14mpg if lucky

 

Well I guess I forgot to mention it's an auto, and the truck only has 46,000 miles on it. So if I got new plugs and a K&N Air Filter I should notice an increase?

 

You do realize that your speedometer (and odometer) will be off because of the larger tires? I'm just mentioning this because you don't list a tuner or chip in your signature.

 

nope, i have a k&n, its the tires fault for your mpg loss

 

i dont think the K&N will help, ive always got better mpg with the stock filter.

why dont your try another approach. drive it a little hard for one tank. see what happens. if i ***** foot mine it is actually worse than if i drive hard on it.

 

If you don't maintain your fuel system (clean filter and injectors), a can of Seafoam wouldn't hurt. If the truck is in good running order, it might just be the price you have to pay to run those tires.

 

..Tex beat me to it: Have you accounted for the fact that your speedo is off?

 

[QUOTE=zabeard]i dont think the K&N will help, ive always got better mpg with the stock filter.
QUOTE]
Yeah......You don't neccessarily have to use a K&N filter......Just make sure your air filter is clean....

 

Yeah......You don't neccessarily have to use a K&N filter......Just make sure your air filter is clean....

 

yea mine went from 18 to 16 on my last fill up... im getting a new air fitler from bob pretty soon so well see if that helps or if its just the cold...

 

i started thinking that too, but i figured it was just a dream...but that would be sweet if its true!

 

i have been getting around 10mpg for about a month now and i have been really hard on it the past fill up and now have 14.3mpg, i have been thinking to get the air charger to go w/my flowmaster i only have filter now ill see if that helps but ya try to drive like u in a Rush!! might help ya

 

on my truck

flowmaster = worse gas milage
air intake = worse gas milage
bigger tires = worse gas milage

magnaflow and borla made my mpg better by 1-2, flowmaster was worse by 1-2.

best gas milage i got was with a stock intake, 265/75/16 revos, magnaflow exhaust, bamachips tuner on 93 octane performance setting. that was 20.2 with an average of two tanks and it wasnt even warm out.

 

Dang, that is pretty bad for gas mileage man! 13-14 is about what I should have but its not! I have 7" of lift with 35s(10" of lift total) and a Supercharger and 4.88 gears and getting 16-17 MPG(Both City and Highway)...There is something wrong with what you are getting! I drive it pretty good(meaning getting up and going) and still get 16-17 everytime I fill up and I always have to use 93 b/c of the supercharger! I would change out fluids, spark plugs, etc..

 

this is for bubba and whoever else said it


i dont think that the speedo will be off that much to notice he jumped up like 2 inches...


and 4.10s nad 31s are fine, myne was fine with 33s so you whould be fine...

 

Like the others ave said before in regurds to your odometer/tripometer moving form the 28s to the 32s (like i did) you have to add 1 mile for every 10 you go. So insted of you getting 220 miles on a tank, you are actually getting 240. But yes you will loose some MPG vs stock, cuz well quite frankly the 3.0 sucks *****

 

I do realize that the speedo is off. It's off by 6.1% so I accounted for that. But I'm getting around 170 miles to 3/4 tank according to the gauge, but I don't use the gas gauge to calculate gas mileage. I just go by how much the truck takes to fill all the way up. So I think I'll get some fuel injector cleaner and next time get some better oil or something I dunno.

 

bah.. right now im averaging 12.5.. truck runs in perfect running condition, and everything was replaced (plugs, wires, fuel filter, oil, air filter cleaned, etcc).. im ignoring it (except for stopping for gas every other day). i was gonna get a thermostat for the hell of it and get mine replaced.. but everytime i go to get it, noone has it in stock.

 

^^ my truck is the same year and milage.. mine sucks too.. i might after winter try a whole tune up and hope for the best


if not, i dont care too much, its fun too have , plus mpg is what my car will be for

 

you've got an 02 3.0 tho, i've got an 01 4.0.. with 85000+ miles on it. i thought the 4.0's held a little bit beter with gas mileage? i may be wrong on that. either way tho.. i've given up for now.

 

I get about 15 in city....