17.5 until these sub-0 temps.

 

11.9 - (Gobi, 33inch duratracs, 3.7)

 

'07 Adventure, completely stock. First couple tanks were in the 17mpg range, now I'm getting maybe 15 - good mix of city/hwy. Not sure if it's cold weather or winter gas or what, but it's a bit disappointing.

 

last yr my stock 07 lux got 18 on a 430 mi trip east to pittsburgh. same trip east with new 14$ filt got 20 mpg later,same basic decent weather. 265/75/16

got 2010 adv ,285/75,got 17+for a while,now in crappy algore winter,15-16 if lucky
i miss my 07!

later, 500 mike trip,just made 17, is it the 285's?

 

My '07 H3 3.7L/ATX Lux/Adventure gets 16.5 city/20.5 Hwy @ 70-75 MPH (tires @ 5psi under max), In winter, I lose 1 MPG city and at least .5 MPG hwy (depending on road conditions) (I have lots of data and check with every fuel fill since new).
You can really help or hurt the MPG on the auto. depending on how you drive. Best case accel moderately and tip out of pedal for early TC lockup in city and keep your pedal movements under control Hwy. + stay out of cruise on rolling grades(-0.5-1 mpg)

My '08 H3 3.7L/MTX Lux/Adventure gets 18.5 city / 19 hwy(was expecting more and it should do better but those are the raw facts) it is still under 4k miles.

 

Stock '08 Adventure w/winch normally driving 75 mph on the highway, I usually see 14.5 to 15 mpg.

Hey, that's not too bad, my '05 Silverado 4 wheel steer crew cab gets around 13.5 to 14 on the hwy.

My '99 Vette, on the other hand, gets over 30 mpg with the cruise control set on 80 mph.

 

Filled up this morning on the way home from work last night and got 13.7 on this last tank. 315's, frt lifted, pcm tune, outside air intake mod, bilstein shocks, extended bumper stops, adventure roof rack, Drive it like I stole it.....

 

I just did a 2500 mile road trip in my '07 3.7 H3 Best tank was 19 worst was 14. Avg was about 17. Most all highway miles.

Leveled, Gobi, Predator brush guard, stock 265's
Truck gets new tires and wheels tomorrow!!!!

 

15.1...

 

13 mpg @ 80mph in 5-15 degree weather on my last 225 mile trip. Cruise control.
13 mpg City driving, same weather.

2009 base, intake tube, 305/70 tires.