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Mileage!

1K views 27 replies 26 participants last post by  brendend 
#1 ·
What are you guys getting??? Post your results and setup like engine/tranny/tires/gearing. I was surprised to find out that I managed to average 20.8 mpg in my 4.0 auto with 30s. Anyone else getting this kind of mileage?
 
#3 ·
I just did my calculation this morning. I'm running 4.0, 5-speed manual, 4:10's and 35's. I got 16.1 mpg's mostly I-70 into the mountains and back. All in all I'm not complaining one bit. in order to keep 65 mph up the steep hills I was 3rd gear at 3,750 rpm's. Oh yeah, it was 100+ degrees out too.
 
#4 ·
4.0 , 4:11s, manual , with 33s. Empty 17mpg,, loaded with camping gear and trailer 14mpg. With a good tailwind those numbers go up to 17 and 20.. Our last trip out west and back we averaged 15 mpg over the 4200 mile trip.. It is what it is.. ;)
 
#9 ·
2006 TJ Rubicon, some lift but still 31" tires. I average 15+ overall, got 21.5 on a long distance run with a heavy trailer keeping it under 60MPH. I track my fuelups on "Fuelly.com" and you can compare with other Wranglers although it doesn't give any mod info
 
#10 ·
I envy all of you. 99 4l, 3 spd auto, 3.73 gears, 32x11.5 tires. I just got back from Colorado, Estes park area. My first tank from my house to hays ks, a wopping 12.3. In estes park I was able to 17.8 on a tank. Higher altitude = better mileage. I also am easy on it. I'm getting 12 in town. I run 3200 rpms at 75 mph.
 
#11 ·
KenG said:
I envy all of you. 99 4l, 3 spd auto, 3.73 gears, 32x11.5 tires. I just got back from Colorado, Estes park area. My first tank from my house to hays ks, a wopping 12.3. In estes park I was able to 17.8 on a tank. Higher altitude = better mileage. I also am easy on it. I'm getting 12 in town. I run 3200 rpms at 75 mph.
I have same jeep same setup similar results
 
#21 ·
06 4.0 with auto trans and 31" tires. Completely stock. I drive lightly on the skinny pedal. 14 city - 19 hwy. As best I can determine.

---------------------
1966 v6 cj-5
2006 Rubicon
booted from ecj-5 for being cheated on a used parts purchase from the web site dictator and complaining about it.
 
#22 ·
'04 4.0 auto. 31s. My mileage is so spastic. The fuel here right now is all over the charts. I drove out to the badlands a couple weekends ago. got crap mileage running ethanol, 14 highway. Refueled with non-ethanol. Then went back over the same road this weekend to meet my mom for lunch. I hit 19 mpg. With the ethanol I noticed that the tranny had to down shift out of OD a lot pulling hills. With the straight gas it did not. Getting harder and harder around here to find straight gas.
 
#26 ·
thats about what my mom gets with a bone stock 06 LJ w/ auto. she drives like an old lady tho :rofl:

with 4.88s/33s/42RLE, I can get anywhere between 13-18mpg...and the majority of the difference depends on driving style.

if you drive like an old lady, keep it at or under 60mph and keep the RPMs low (under 2500), accelerate slowly, hypermile when coming to a stop, coast downhill, etc...the mileage isn't too bad. with bigger tires, proper speedo calibration is key.
 
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