Mpg
Senior Member
Joined: Jun 2010
Posts: 1,042
14.5 average in town and 17.5 on the hwy with a couple of highs in the 18's and getting 15.5 with mixed hwy/city driving. I have 33's, the 3.7L, no roof rack/bumper/winch, and have a K&N with intake mod. The cold weather has really done a number on my daily commute mileage lately!
Some folks are saying they are getting 20, but I think that's going to be with a 3.5L, manual tranny, base model/stock tires at around 55 on the hwy. I'm normally running 70-75 on the hwy with constant winds battering the truck around.
Some folks are saying they are getting 20, but I think that's going to be with a 3.5L, manual tranny, base model/stock tires at around 55 on the hwy. I'm normally running 70-75 on the hwy with constant winds battering the truck around.
Senior Member
Joined: Feb 2010
Posts: 196
From: troutdale,oregon
Wow, 12.5mpg is pretty low but I wouldn't worry too much about the roof rack. When I bought my h3 it came with some urban roof rack, I took it off hoping to improve my gas mileage and it didn't do squat. I think the aerodynamics of the practically flat windshield is so bad that the wind flows well above the roof rack. Let us know how it goes
Senior Member
Joined: Apr 2010
Posts: 568
From: The Mitten
Stock tires, 3.5L with spectre filter and modded intake(NOT airdoc though), with winter gas and cold temps ave about 15 mpg of mostly highway miles at 75 mph for much of it. I have ranged from a low of 14 to a high of 20 since I'v gotten it but more consistently in the 15-17 mpg range depending on the season.
Senior Member
Joined: Sep 2009
Posts: 240
That is a very loaded question: There are so many varibles with all the mods, tire sizes, speedometer's that are off with the changes in tire sizes, roof racks, frt end lifted not lifted, etc....etc...
Things I can tell you.
I was getting 17-18 avg bare stock bought off lot. lifted frt. added 35's and roof rack and was avg. 13-14. but speedomter was off about 6mph according to GPS after adding 35's. I have since put on new bilstein shocks and extended bump stops hunner skids and did a PCM tuneforless. Got my speedometer back correct with the 35's and now on my second tank of fuel. I'm hoping to be back in the 15-16 range but want to run a few tanks through and see what my avg comes out. First tank didn't impress me much (13.5) but most of it was on a trip to Texarkana on the highway running 70-75, I know that hurt, the tank i'm on now is mostly round town and to work. I'm guessing 4-5 tanks through will give me a good avg of what i'm getting regaurdless of how I'm driving or pulling.
Things I can tell you.
I was getting 17-18 avg bare stock bought off lot. lifted frt. added 35's and roof rack and was avg. 13-14. but speedomter was off about 6mph according to GPS after adding 35's. I have since put on new bilstein shocks and extended bump stops hunner skids and did a PCM tuneforless. Got my speedometer back correct with the 35's and now on my second tank of fuel. I'm hoping to be back in the 15-16 range but want to run a few tanks through and see what my avg comes out. First tank didn't impress me much (13.5) but most of it was on a trip to Texarkana on the highway running 70-75, I know that hurt, the tank i'm on now is mostly round town and to work. I'm guessing 4-5 tanks through will give me a good avg of what i'm getting regaurdless of how I'm driving or pulling.
