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  #25  
Old 06-25-2011, 08:21 PM
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Re: WK2 Hemi vs V6 MPG Compilation (results inside)

I'm getting 15 mpg average with my wife's Q7 4.2 (with a good tail wind). The JGC will be the new family hauler. Switching from premium to regular gas will cut cost. Any mpg gain will be a bonus. Hopefully it will return 19 mpg with highway cruising 75-80 mph.





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  #26  
Old 06-25-2011, 08:28 PM
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Re: WK2 Hemi vs V6 MPG Compilation (results inside)

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Originally Posted by 1200RT-P View Post
How? I hate to say it, but I don't buy it. Unless you're on flat ground with a tailwind every drive .....

My MPG is much closer to what's quoted in the first post. And this is normal city driving - "auto" mode, etc.

Don't care whether you buy it, that's what I get... BTW that is not coming from the EVIC, it is miles driven divided by gallons to fill up. Why would someone make up something over such a trivial question.
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  #27  
Old 06-25-2011, 10:11 PM
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I can tell you I got 21 plus on a road trip recently. I traveled over 200 miles and had over half a tank left. For a hemi that ain't bad in my book.
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  #28  
Old 06-26-2011, 03:38 PM
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Re: WK2 Hemi vs V6 MPG Compilation (results inside)

It looks like I'll get ~530 miles on my first tank. And I've been doing the WOT break in procedure, from time to time (averaging ~40 to 60 mph). Wonder how much better it can get, with another 3,000 - 5,000 miles on the vehicle.
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  #29  
Old 06-26-2011, 05:00 PM
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Re: WK2 Hemi vs V6 MPG Compilation (results inside)

Mlebout, are you going to run a hand calculation vs. using the onboard computer? I would be curious to read the actual result.

While I don't take delivery until Thursday and can change to the V6, I just like the power #'s of the Hemi. Therefore will not change despite some possible mpg advantages.




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Old 06-26-2011, 05:38 PM
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Re: WK2 Hemi vs V6 MPG Compilation (results inside)

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Originally Posted by NHman View Post
Mlebout, are you going to run a hand calculation vs. using the onboard computer? I would be curious to read the actual result.

While I don't take delivery until Thursday and can change to the V6, I just like the power #'s of the Hemi. Therefore will not change despite some possible mpg advantages.




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No, I am basing the numbers on the EVIC. When I filled it, it was giving me a DTE of 454 miles, I'm at ~5/8's of a tank with odometer at 255 and DTE at 275. Next tank will be manual calculations and will try and post numbers. I am somewhat happy with the V6, now. But, still sorry I didn't get the Hemi, even just for the sound. I tried to change the order, but was too late (it was already in D1). I had based my original order on my '08 Hemi's gas mileage, didn't do enough research before ordering. From what I've been reading here, the 2011 Hemi is better on gas. I was lucky if my '08 got 250 miles per tank (~20 USG per tank). If the EVIC numbers are right I'll get ~530 miles to a tank (~26 USG per tank). Huge difference between the 2008 Hemi and the 2011 Pentastar!!!
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  #31  
Old 06-26-2011, 10:35 PM
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Re: WK2 Hemi vs V6 MPG Compilation (results inside)

My Hemi Overland 4X4 is getting just under 12mpg in majority city driving. California uses a heavy ethanol concentration in fuel so I think that could be a minor factor. On a recent trip to Arizona I averaged 18 out and 17 back. That was including mountain driving and long stretches of desert at ~80-85mph cruising. I'm a little skeptical of the guys getting 20+ on the highway and 15 in the city, unless maybe they are rolling double nickels on flat roads and stopping very infrequently.

Also, I notice my EVIC is a little optimistic. On that AZ run it was 1 full mpg too high, and here in the city it's maybe a few tenths too high.

Overall love the truck and the fuel economy isn't a big problem. But it would feel better to get at least the EPA mpg numbers. At least my previous truck (BMW X3) also did not reach its EPA number in the city.
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  #32  
Old 06-27-2011, 10:36 AM
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Re: WK2 Hemi vs V6 MPG Compilation (results inside)

The V-8 does not get very good city or combined MPG, and one should not expect otherwise. But with the MDS shutting down four cylinders I get 25 MPG at 65 MPH, and 22 MPG at 80 MPH. These are best case numbers cruising on a flat road with no acceleration/deceleration. Although not typical driving conditions, it is still impressive for a vehicle that weighs 5000 pounds. Getting >90% of maximum torque from 1600 RPMs on up allows the HEMI to use MDS and actually save some gas.

For a $100+ per year extra in gas I will way more enjoyment out of the V-8!
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  #33  
Old 06-27-2011, 01:00 PM
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Re: WK2 Hemi vs V6 MPG Compilation (results inside)

I think people's city mileage is different because roads are much different around the country. I know in Pittsburgh, every car I have had has been below the stated MPG claims by 1-3MPG. The hills and idling while not moving for minutes multiple times is not good for gas mileage. It is much more noticeable in a v8 compared to a 6 or 4-banger. My 4-banger fusion is 1 below and my old crown vic v8 was 3 below the ratings. I just visited family in Alabama and the city gas mileage of the Hemi WK2 was around 17 compared to the city mileage in Pittsburgh of 12.8. The roads are more open and there are less red lights in that particular city, so gas mileage was way up.

Highway is different. I noticed no change in mileage once a steady speed was reached. It didn't seem to care if that speed was 55 or 80, the gas mileage was the same. I got 21 on the highway during my last trip, ~1500 miles.

I quit buying the base engine in any vehicle. I got the base engine in the Fusion and it is horrible. I love the car but loaded up with the kids and AC on, it barely can merge on the highway. The MPG is decent but not much better than the much more powerful 6 cylinder models. I got the same impression from the pentastar in the Jeep. It may feel decent during a test drive but once you get it loaded up and after a few years when performance is down a little, it is a dog. There are times when I wish my Hemi was faster, I could not imagine having a 6 cyl in this Jeep even if it got 15 more MPG's.
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Old 06-27-2011, 06:53 PM
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Re: WK2 Hemi vs V6 MPG Compilation (results inside)

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Originally Posted by WK2maybe View Post
I'm a little skeptical of the guys getting 20+ on the highway and 15 in the city, unless maybe they are rolling double nickels on flat roads and stopping very infrequently.

Also, I notice my EVIC is a little optimistic. On that AZ run it was 1 full mpg too high, and here in the city it's maybe a few tenths too high.
I recently drove from Raton, New Mexico to Edmond, Oklahoma on a single tank of gas. My EVIC was reading DTE ~60 miles when I filled up in Edmond putting around a tad over 21 gallons in the tank on fill-up. That was pretty much all State Highway and Interstate driving except a short way through Amarillo. That was around a 490 mile drive with a few gallons to spare. Not too shabby for a 5.7 liter engine.
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  #35  
Old 06-29-2011, 03:43 PM
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Re: WK2 Hemi vs V6 MPG Compilation (results inside)

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Originally Posted by WK2 Rover View Post
For a $100+ per year extra in gas I will way more enjoyment out of the V-8!

The fuel tank on the WK2 is 24.6 Gal so even if you are only getting an additional 4 MPG out of the V6 that's an extra +/- 100 miles per tank. Considering the Hemi prob gets a max of 400mi out of a tank - If you are lucky - that equates to roughly 25% better fuel economy with the Pentastar.

For it to only cost you an additional $100 per year you would have to only be spending $400 per year in fuel. I fill up on average once a week and it's at least $100 per fill so I drop a min of $5200 a year on fuel. That means that all things considered the V6 saves me $1300 per year. (All of which gets dumped back into the jeep in accessories etc anyways but thats besides the point )

Quote:
Originally Posted by 77rednecktruck View Post
I think people's city mileage is different because roads are much different around the country.

Could not agree with you more. The big difference here is both road conditions and driving style. "City Driving" in a small town with a limited amount of traffic lights is a far cry from city driving somewhere like NYC. The only way to get accurate numbers here is if you are comparing the same driver on the same roads.

Quote:
Originally Posted by 77rednecktruck View Post
I could not imagine having a 6 cyl in this Jeep even if it got 15 more MPG's.
Could not disagree with you more!
Personally I can't imagine needing anything more than the V6 for everyday driving. The only reason I would consider the HEMI was if I was doing regular towing of heavy loads or trailers. Otherwise it has more than enough get up and go for what it is - an SUV - not a quarter mile queen.

If you like speeding from one light to the next fair enough, but your going to be paying a large penalty at the pump to do it and do you really end up getting there that much quicker at the end of the day?
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Old 06-29-2011, 03:48 PM
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Re: WK2 Hemi vs V6 MPG Compilation (results inside)

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Originally Posted by SixZeroFour View Post
Could not disagree with you more! Personally I can't imagine needing anything more than the V6 for everyday driving. The only reason I would consider the HEMI was if I was doing regular towing of heavy loads or trailers. Otherwise it has more than enough get up and go for what it is - an SUV - not a quarter mile queen.

If you like speeding from one light to the next fair enough, but your going to be paying a large penalty at the pump to do it and do you really end up getting there that much quicker at the end of the day?
I gladly pay for the fun factor of the Hemi over the v6. It's not much more at the pump or to buy it, seems like a no brainer to me.
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