Rabs

2014 Wrangler Sahara Unlimited. 3200 kms on as of now.

When full tank of gas on board comp tells me 450ish kms till empty. I know its a jeep and wasn't expecting GREAT gas mileage but with new PENASTAR engine was hoping for better. I'm told after its broke in it will get better.

Anyone know when this break in stage is over or have any ideas to get better fuel economy? Tires are inflated properly. I don't drive it hard or excess speeds. Almost always in "ECO" mode.

When I bought it was hoping for 550-600kms / tank.

Help.

Thanks !!

trigger

your jeep bases your fuel economy on the last 50 km driven (+/-)... if you've been driving more city than hwy, it will show you don't have as far to go until empty...

with my GC i can fill it up and it shows about 375km to empty, but if i start driving on the hwy, the numbers go up. My GC is a 99 w/ inline 6, and will actually get about 550 to a tank on the hwy.



hope this helps you out.

oldfart

You used jeep and economy in the same sentence. Lol.

CrazyWJ242

best way to track fuel economy in any vehicle is fill the tank, reset the trip odometer, and record how much fuel it takes to fill back up to the same point... dont squeeze that extra dollar into it...
dont trust that computer...

I use Fuelly.com to track my MPG (see the link in my signature) you can use it to compare against similar models... 2014 Wrangler is averaging 17MPG according to fuelly... though only 5 JK's getting that much so far...

keeping weight out of the jeep is a good idea, if your carrying around tools and such, stick with the absolute essentials (i keep a few tools and the most common socket size used on my jeep with me)

If you not hitting the dirt often, you could over inflate the tires +5 PSI and that can really help with the fuel economy, you might not notice a ride difference either (i wanted to make a cheap as possible run home so i inflated to the max spec on my tires 44psi, and it saved alot of fuel)

How you accelerate with the slush box (automatic) can also affect the fuel economy, holding the pedal in position while accelerating at the slower pace waiting for the computer to shift but dont plan on gaining much more speed, you can ease of the pedal to get the jeep to shift into that final gear much sooner, and you have room to the kick down location to reapply the accelerator to get to crusing speed... torque will be lowered but it will save the RPMs and you will get better mileage... after a while you'll get a feel for when and where you can use this most...

The only thing you can do for MPG is driver training... you are after all driving something with the aerodynamics of two bricks sacked on top of each other...

Rabs

Thx guys !!!

zrs

All vehicles get poor mileage this time of year. My Honda usually gets 6.5L per 100km in the summer, but its using over 10 now. The best I ever got in my 2013 JKU was 9.5l per 100km during a 500km trip in the summer. Its up over 14 now. Yours will get better, once warmer weather comes around.

MUDEATER

15L/100km on the highway
18L/100km in the city

These are averages over a year and tracked very diligently.
2010 JKU w steel front bumper and factory everything else. Note: I was at a 14/17 combo before I put steel bumper on... Weight makes a major difference... So does tire pressure. I run at 40psi.

I also found cruise control helps.

JTPhoto JK

As all ready stated..

#1 - winter fuel blend. Pay no attention to winter mileage it doesn't get much better. Garaging at night or plugging in will help speed up warm up time.
#2 - When you fill up you must also reset the eco meter otherwise your average is based off the past 500klm.

2008 JKUS auto 4" lift on 35s, I regularly get 19mpg hwy in summer 12mpg winter..

Overhaul it does not appear that the Pentastar gets better mileage then the 3.8 however, both engines do get better mileage once they get some miles on them..

Rabs

I primarily drive on highway and always use cruise. Always plugged in, 5 min warm up times. Will increase air in tires to 40 and just watch it get better as the temp does.

JeepCACares

Rabs,

You'll certainly see some improvement once the Jeep breaks in and the weather levels off. Not much you can do since your Jeep is pulling in the freezing cold air....