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Old 09-01-2014, 08:57 AM
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Eco Diesel Mileage

All,
Purchased a 2014 Limited 4x4 eco diesel in July, have put 2200 miles in it and have been slightly underwhelmed by the mileage. I have gone on three 200 mile plus road trips and have managed to eek out 26.1 miles per gallon on a highway trip. Around town it seems the best I can do is 20.8. I have really tried to go easy on the throttle and drive conservatively.
Sticker said 21 city 28 highway 24 combined.

What are the rest of you seeing?

Is there something I need to have the dealer look at?

From what I am reading on this forum many of you are getting much better numbers than what I am seeing.
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Old 09-01-2014, 10:29 AM
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Re: Eco Diesel Mileage

It's highly dependent on circumstances. In the winter, on winter blend diesel, it will get worse. For the winter months when my usage is primarily short, in-city hops I average in the 13 – 17 mpg range.

My all-time best tank average was 26.15 mpg (over 19.3 gallons); my worst was 17.61 mpg (over 20.31 gallons).

My perspective is that—given the price of the diesel option and the cost premium for diesel—people should not buy the diesel intending to come out ahead. Buy it for the torque, the highway range per tank, or, hell, even the sound, and you will be happy. Buy it in order to save money and you won't.
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Old 09-01-2014, 12:12 PM
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Re: Eco Diesel Mileage

Just turned 13,000 on my baby. I can average 32 on flat highway such as Casa Grande, AZ to Yuma, AZ. Recently pulled a 3500 lb trailer from Casa Grande,AZ to Creede,CO and had an average of 21 mpg, this is great considering some of the hills we pulled.
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Old 09-01-2014, 12:44 PM
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Re: Eco Diesel Mileage

Quote:
Originally Posted by garybtt View Post
Just turned 13,000 on my baby. I can average 32 on flat highway such as Casa Grande, AZ to Yuma, AZ.
Just curious, what speeds was this at? Have you been on to San Diego? If so, how much do the steep, curvy grades between El Centro and San Diego beat up on the mileage?
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Old 09-01-2014, 01:47 PM
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Re: Eco Diesel Mileage

Also it should be mentioned that fuel quality affects mileage. Biosiesel blends aren't as good as real #2 diesel. Even fuel from different stations can make 2 MPG difference. Keep in mind that the motor will improve with break in also.
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Old 09-01-2014, 01:48 PM
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Re: Eco Diesel Mileage

We live in a semi rural area. Everyday mileage about 28.0 and a long trip that goes up to 30.3 with steady driving 60 to 70 mph.
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Old 09-01-2014, 02:02 PM
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Re: Eco Diesel Mileage

2x4 or 4x4 please specify as it will make a difference.

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Old 09-01-2014, 02:09 PM
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Re: Eco Diesel Mileage

4x4 Limited.
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Old 09-01-2014, 02:38 PM
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Re: Eco Diesel Mileage

With my 4x4 Limited I generally get 29mpg highway at 75mph and 23mpg towing my 3,000lb pop-up trailer at 70mph.
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Old 09-01-2014, 02:58 PM
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Re: Eco Diesel Mileage

Have been seeing 24-26 around town and easily over 30 at 65 MPH on the highway...5500 miles... SO far pretty happy !
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Old 09-01-2014, 04:31 PM
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Re: Eco Diesel Mileage

17,000 miles on a 4X4 Limited: 33mpg at 65MPH on the flats, 28mpg at 70MPH over the same, minus 4mpg with a Thule Sonic box and Yakima Whispbars on top, minus an additional 7mpg towing a 2000 pound T@B trailer over the Rockies (tires at 37 psi). City driving at about 19mpg.

Wind also plays havoc with mpg and whether from the front or side, wind can reduce milage by several mpg.
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Old 09-01-2014, 05:16 PM
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Re: Eco Diesel Mileage

If it makes you feel better.... My 2012 Hemi averages 12 in town and 17.7 at 83 mph..........20 anything is a dream.....but she tows my 6000 lb Cj/trailer combo really nice.
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