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-   2014+ Jeep Grand Cherokee Ecodiesel 3.0 (http://www.jeepgarage.org/f222/)
-   -   Miles per Gallon (http://www.jeepgarage.org/f222/miles-per-gallon-70378.html)

raptor5618 01-14-2014 10:23 AM

Miles per Gallon
 
I guess coming from a TDI and the TDI forum I will always have a fascination with squeezing as many miles out of a gallon as I can. I still have not found the best methods for doing that yet but I am really impressed that on a long uphill climb I was able to maintain my speed and watch the screen say that my usage was in the upper 20's. Now I was not going 70 miles and hour but the power of this vehicle is pretty incredible.

The dealer filled the tank but I wanted to be sure that I was able to track my MPG based on how I fill the tank. Seems as if with this one, when the nozzle clicks you are pretty much full. With my previous vehicle you could put in almost one more gallon.

So with a brand new engine running mostly highway miles on a trip that started at probably close to sea level and went uphill to the final destination was 28.37 based on miles driven and gas put into the tank. There was some city driving but not all that much. Given that it is a new engine and using winter fuel I was pretty surprised.

With my TDI the mileage improved as the engine broke in and it always dropped some in the winter time. So far on screens that show MPG I still am showing 28+. My experience is that these screens are usually more optimistic than what you get when you calculate MPG but I think I am going to like the mileage I get. I was very worried coming from a vehicle that averaged 40 MPG.

I know most people here are more interested in power and acceleration than efficiency but I thought there might be a few who are thinking about buying and wonder about what mileage they might get. Oh I am in NE PA so on my 100 mile daily commute I rarely am on the level. Always going up or down.

bae1569 01-14-2014 01:00 PM

Re: Miles per Gallon
 
I haven't been super on top of keeping track of my mileage. But I to am up and down a lot throughout the week. I've found that at an average speed around 50-55mph my Jeep says it get anywhere from 24-28mpg, when I calculate the mileage it seems to be 25-29ish. So basically mine seems to be reporting pretty darn close.

racer-xerols 01-14-2014 03:33 PM

Re: Miles per Gallon
 
I commute 18 miles (short run) through the mountains of MD. A short mountain commute is not the best for mpg, I know. But it is what it is.

My Summit has 2300 miles on it now. Highway miles MD to FL, cruise set between 70-80, it gave me nearly 29 round trip, brand new. I started that trip with 250 miles on the odometer.

Commuting was giving me 21 or so. But yesterday morning I upped my tire psi from 35ish to 40 all around - and the trip odometer as of today's lunch run showed 23.1 avg.

fun2drive 01-14-2014 03:53 PM

Re: Miles per Gallon
 
I like to squeeze max mpg out of every vehicle I own. My SuperDuty would run 19.1 to 17.5 except winter when it would drop down 30% from those numbers. I am fully expecting to see 28mpg on the interstate and around town in the 20's. This is going to be a fantastic vehicle and I hope just the beginning of auto makers bringing more diesels to the US. New Titan gets a Cummins diesel for 14 which is encouraging as well as the 15 Colorado getting a diesel too...

CNY_WK2 01-14-2014 07:54 PM

Re: Miles per Gallon
 
I track mine every fillup (only 3 so far) and have had a decent amount of city driving. Averaging 23.9(see my sig). I fully expect it to climb 2-3 once we shift over to summer blend diesel.

Route 66 01-14-2014 08:04 PM

I've been getting 19 - 20 mpg with mostly city driving in Denver. Also, my oil life is down to 40% at 2,000 miles, already added a quart of oil.

md2020purplecow 01-15-2014 08:05 AM

I've put 4600 primarily highway miles on my Jeep since early Dec. I'm driving in Central IL where the temp has been less than 30. I run non-bio diesel with winter additives without cetane boost.

My average fuel economy initially increased by one mpg with each fill-up from 23 to 27 mpg, where it has plateaued. I usually set my ACC to 72 mph and go. Although I did avg. 31 mpg on a 650 mile trip when I was driving 55-65 mph. Needless to say, I'm estatic!

Hammerhead 01-15-2014 05:22 PM

Re: Miles per Gallon
 
Our 2008 CRD got around 21 - 22 MPG on our normal daily commute with a mix of city and freeway (55 MPH) driving.

The EVIC on our new ecodiesel shows an average of 25.9 MPG and I'll do my 2nd fill-up in the next day or two to hand calculate. Part of our drive is a level 45-MPH street and the instantaneous MPG goes as high as the mid 30s according to the EVIC.

WK2OverlandII 01-15-2014 06:19 PM

Re: Miles per Gallon
 
I'm averaging 25-26 with a mix of city and highway. My last two combined fill ups as I only added 10 gallon locally and drove for another week.....as I like to buy it in the next town over where is 23 cents a gallon cheaper. Between the two fuel stops I used 27.3 gallons and I drove 738 miles which equals 27.03MPG hand calculated..I know as I get it broken in and the summer temps and fuel get here I'll get 30 or almost 30.....I'm more than satisfied :thumbsup:

raptor5618 01-16-2014 09:47 AM

Re: Miles per Gallon
 
Wow that really sounds great. I drive mostly highway and even off highway is on roads where I probably get decent MPG because there is not a lot of stop and go. I think that on Friday when I fill up I will be over 28 again. If I hit 29 like it says on the trip odometer I would be thrilled. Like you said I am now thinking that 30 in the summer is very possible. One of my main concerns was that I would be spending a lot more on this than on the Jetta. I knew that it would be more but figured that if was close to 28 it would not be a killer to my budget. I was hoping that it was not going to be 26 or 25.

crabman 01-16-2014 11:17 AM

Re: Miles per Gallon
 
IMO guys only use math at the pump for mileage. It can be interesting to see how well the electronics have done especially if they consistently repeat themselves because then you can make a reasonable if not entirely accurate estimation of consumption on the fly. Mine has been over twice and under once so obviously I cant make much out of that.

Mine btw just did a suspiciously good 24.06 in nearly all town driving. Gonna have to repeat that before I can buy into it.

_Bryan_ 01-16-2014 01:19 PM

Re: Miles per Gallon
 
I do about 50/50 driving (lots of city driving during the week, then put about 250 miles on the freeway on the weekends). I'm seeing only about 19mpg in the city, but a nice 27 or so on the freeway.


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