6.7L fuel economy - Diesel Bombers



6.7 Liter Dodge Cummins 07.5-12 Discussion of 6.7 Liter Dodge Cummins Diesels

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Old 06-02-2009, 11:39 AM
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Default 6.7L fuel economy

What kind of highway mileage are you guys getting on your 6.7L's. I'm looking at 2500 4x4s and want to know what to expect. I will do very limited towing, mostly just drive it on the freeway.
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Old 06-02-2009, 01:28 PM
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when my truck was stock i was avg 18 highway and 16 in town with my mods now im getting around 21 on the high way and 17 in town hand calculated
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Old 06-02-2009, 11:24 PM
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Default fuel milage

Before my 22.5's all stock i was getting anywhere from 12-13 in town and 13-15 on road with cruise control on 60. Not worth a **** really. Now i get 10-12. 1 ton 4x4 6 speed manual. 3:55's i think?
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Old 06-03-2009, 04:29 PM
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I get about 16-17 usually on the hwy running 80-85 mph and don't really worry about it around town. I babied it up and down the road all last week running 65-72 mph and drove it like there was an egg shell between my foot and the pedal and got 21 mpg hand calculated. I was amazed to get over 700 miles outa the tank.
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Old 06-03-2009, 04:42 PM
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about 21 country driving. thanks to smarty
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Old 06-05-2009, 02:58 PM
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I am avg'n 18.5 per overhead computer on the highway.
14-15 in city driving. I have tons of start and stops in the Dallas area...
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Old 06-06-2009, 04:26 PM
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just hit 45k and the mpg are starting to slowly come up. for the first 30k i was getting 10-11 around town and 12-13 on the hwy. now i'm up to 13-13.5 around town and 14-15 on the hwy at 70-75. this is on my 07.5 with the 12'box/sail 4:10s the 6spd auto and a good load on it. i love this truck. its got to be the fasts bread truck around.
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Old 06-08-2009, 01:16 PM
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MPG has direct relation with how heavy the right foot is, and percent of city to freeway driving.
I got over 30K, have gotten ride of all the problems! and using Smarty at level 3.

I am getting average weekly driving of 17.2 MPG. I fill up every 525 to 550 miles and hand calculate my consumptions.

FYI, I got one of those heavy right foots!!
If I drive like my age, I get at least over 19MPG average.
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Old 06-11-2009, 12:30 AM
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Unfortunately, I am averaging 11-13 in town and 17-18 on the highway. less than 25K miles on my 6.7... I have heard you get a break around 50-60K. No mods - all stock
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Old 06-11-2009, 08:32 AM
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Airborne
Are you in the Army or used to be in?
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