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  #13  
Old 09-02-2011, 11:55 AM
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Re: HEMI real life mpg on WK2

After only 150 miles, I'm averaging 19.2 with the V6 with more stop and go driving than highway. I don't race people at red lights (anymore) and I think the engine has more than enough power. I haven't noticed the tranny hunting for shift points either. I'm very pleased with the performance and happy I didn't get the Hemi.
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Old 09-02-2011, 03:10 PM
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Re: HEMI real life mpg on WK2

After over 14,000 miles mostly suburban and some city and some express way
calculated average at each fill up is always betwween 15.5 to 16.5 mpg. On the extended 200 mile trip usually get between 18-20 mpg with the 5.7. Gots to keep your foot out of the throttle if you want mileage.
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  #15  
Old 09-03-2011, 02:49 AM
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Re: HEMI real life mpg on WK2

I dropped in a K&N air filter and I now get 16mpg...thats up from 13mpg with OEM filter...and I havent changed my driving style...I get on this hog cuz i likes to boogie
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Old 09-03-2011, 12:04 PM
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Re: HEMI real life mpg on WK2

Remember, the 6 runs on regular and the 8 on mid.
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Old 09-03-2011, 12:10 PM
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Re: HEMI real life mpg on WK2

Quote:
Originally Posted by Jeremy1983 View Post
I've got 560 miles on my 2012 HEMI and am averaging 18.3 MPG with 60-70% highway driving thus far. Also, a while back I compiled the averages of the HEMI vs V6 MPG according to posters in this thread:

WK2 Hemi vs V6 MPG Compilation (results inside)
I am actually showing 18.6 mpg on my Summit Hemi...I love this

IINSKY
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Old 09-03-2011, 01:23 PM
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Re: HEMI real life mpg on WK2

I'd consider the EPA estimates on this vehicle pretty accurate. If you baby the throttle you can get a few more MPG out of each of these engines, but I wouldn't count on it.

People with the hemi say they can get 22mpg highway and that'll match the V6-- Well, under the same near-perfect conditions you got 22mpg, I can get almost 30mpg. I've gotten 29mpg on multiple occasions using the "one" following distance of ACC on a relatively flat road going around 65 mph in about 80 degree heat. Of course these are near-perfect conditions, and I wouldn't suggest that someone buy the car based on this anecdotal information.

Most publications are reporting about 13-15 mpg total with the hemi. 3 or 4 mpg better with the V6.
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Old 09-03-2011, 10:40 PM
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Thumbs up Re: HEMI real life mpg on WK2

Thanks guys,
There is a huge variance between the numbers. We got 18 to 22 with highway driving and as bad as 12.7 to 16 at most with city. I used to get 14 at most with my KJ but it went up to 16.3 after I swapped the muffler and got rid of some weight from the cargo area.


Quote:
Originally Posted by Uncle Paul View Post
V-6 transmission hunts around a bit more, and sound is not fulfilling, but I am getting between 19-25 mpg in all around driving according to EVIC.
When you say sound, is that the engine's purr or the sound from the back-end/muffler? I have an '04 KJ and the engine was whisper quiet, in most cases I could not even hear it while idling, after getting a flowmaster Super 50, it sounds amazing, and that's with V6, 3.7L. I am pretty sure you sqeeze a bit more agressive sound from WK2's V6.

How does EVIC give 19-25? Or is it varying that much day to day?


Nobody mentioned if Hemi has the active cylinder management (found out it is called MDS, and WK2 Hemi has it).
Do you guys feel the MDS when it kicks in?

Quote:
Originally Posted by AAAA View Post
Remember, the 6 runs on regular and the 8 on mid.
Yes, I read about this, does anyone ever really buy mid-grade anymore?I mean, which such a little difference between the two, is HEMI that sensitive?

Quote:
Originally Posted by iinsky View Post
I am actually showing 18.6 mpg on my Summit Hemi...I love this
Is this city/highway/mix? If mixed, what's the balance?



So we got with Hemi
13-15 Published
22.1 with 500 miles so far
22 with highway 70s
14-15 around town/city/local
18-20 200mile trips
18.6mpg ?/?
18.3 with 60-70% highway
19 with highway 60s
12-13 with 90% city
15-16 city
13mpg city, 16mpg city with K&N Filter
12.7 with 85-90% city


V6
19 Mixed, 23+ Highway with V6
19.2 with city driving


I think, nobody would get a HEMI if they are so much concerned about the fuel consumption, but it is also important to get a real life performance and fuel consumption numbers. One might be OK with 15mpg if that's what's posted on the sticker, but if majority of drivers are getting 10-11 that would seriosly put a dent on someone's wallet if they can just afford 15mpg vehicle.

Like CrazyJ said, the results seem closer to published numbers, however anything over 20, even if it is highway, is really impressive and makes one wonder. Especially 22mpg on a Hemi. I guess they hit that sweet spot with MDS activated, and most likely taking advantage of overdrive (New Cherokee has it, right?)


PS: If you guys want, the topic can be merged with WK2 Hemi vs V6 MPG Compilation (results inside)

Thanks again for all the reports.
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Old 09-06-2011, 11:03 AM
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Re: HEMI real life mpg on WK2

I was on the fence on which one to pre order. I ended up going with the v8 because it didn't appear that i could get qdII (with the rear lockers) with the v6. I don't own a boat, and the v6 was going to be such a performance improvement over my current vehicle, i am sure i would have been happy. It is a bit disappointing that, especially for the 2012, you have to get so many other options just to be able to get Jeeps premier 4x4 system...

Except for the highway, i would imagine i will purposely avoid the mpg metrics....its not so much the hit to the pocket book, its more the reminder that i couldn't order the engine i wanted in the first place (diesel). I am part of the suv camp that doesn't get the desire for quick 0-60 times or top speed (within reason). I would have gladly given 2 seconds back for a +4mpg...but, to each his own
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