Last post on Jun 04, 2013 at 7:39 AM
You are in the Jeep Wrangler
What is this discussion about?
Jeep Wrangler, Jeep Wrangler Unlimited, Jeep Scrambler, Jeep CJ-5, Jeep CJ-7, Fuel Efficiency (MPG), SUV
#26 of 35 Re: Unlimited Soft top issue [wendysinger]
Apr 18, 2008 (6:22 am)
Keep in mind, if you regear and go with larger tires, you'll also need to verify or swap your speedometer gear to accurately reflect speed and mileage travelled.
I had 4.10 and 30's on my TJ. I went to 4.88 and 33's. Speed and mileage was the same and I didn't have to change the speedo gear. If you don't change it, it will give you an inaccurate reading of speed and mileage travelled/MPG.
#27 of 35 Re: Mileage [sciguy85]
May 21, 2008 (7:51 pm)
I own a stock 2007 Unlimited X 4x4 with 17,500 miles. It has the 6 spd manual, 17" wheels and the 4.10 gear ratio. On regular gas, I average 17 mpg city and 19.5 hwy. This is as good or better than some of my friend's luxury/performance cars, but their cars take premium!
#28 of 35 Not so bad..
Sep 21, 2008 (6:55 am)
06 Unlimited Rubi 6spd stock - on recent trip tanks averaged between 18-22. One thing that made a huge difference was putting the tire pressure exactly at the specifications. When my tires are even a few (no more than 3) pounds low I lose about 2-3 mpg hwy. Also, in decent hills, I don't use cruise control... if I have luggage etc and the Jeep seems to struggle keeping speed, the accelerator just goes to the floor... instead I just maintain throttle position and let the speed scrub off 5 or so mph.
Oct 20, 2008 (4:42 pm)
I put in a new dist/cap/rotor/wires my gas milage went down 6 MPG don't know what to do ?
#30 of 35 Re: lost mpg [florman1]
Oct 21, 2008 (5:11 am)
.........don't know what to do ?
Put the old ones back?
#31 of 35 Re: lost mpg [florman1]
Oct 21, 2008 (6:01 am)
You sure you ran the wires from the plugs to the right points on the cap? If you don't put em in in the correct order, you WILL have issues, the least of which is reduced MPG.
#32 of 35 Re: Unlimited Soft top issue [waterboy33]
Apr 27, 2009 (7:00 pm)
The lift and 33" tires will reduce your gas mileage, but unless you re-gear, it will only be about 10% less. Go larger than 33's though and you will need to re-gear and then your mileage will suffer a 20%+ drop.
#34 of 35 2010 Rubicon MPG
Apr 08, 2012 (1:35 pm)
Odd no one has posted here since 2009?? Anyway, I just purchased a 2010 JK Rubicon 2 door, soft top, automatic with stock size BFG Mud TAs and 47K miles on it. After a 1500 mile trip, I averaged 19.7 to 20.5 MPG driving 65-70 MPH with the A/C for about half the trip.