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Real world fuel mileage for a 2015 6.4 Hemi
#1823951
05/11/15 01:31 AM
05/11/15 01:31 AM
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Joined: Jan 2003
Posts: 43,975
Round Lake Beach, Illinoisy
Rhinodart
OP
Rhinotruck
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OP
Rhinotruck
Joined: Jan 2003
Posts: 43,975
Round Lake Beach, Illinoisy
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I am looking at a 2015 Ram 2500 4x4 regular cab long box with the 6.4 hemi, 6-speed auto, and 3.73 gear. Anybody have any real world mileage numbers? 
Last edited by Rhinodart; 05/11/15 01:33 AM.
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: Rhinodart]
#1832236
05/22/15 02:07 PM
05/22/15 02:07 PM
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Joined: Aug 2005
Posts: 6,054
Salem
Grizzly
Moparts Proctologist
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Moparts Proctologist
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Salem
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I found this on Youtube, and it's a pretty honest assessment of a 6.4: the comments are good, he lists the weights, and has a shot of his travel-trailer: Towing If you click on His profile, there is a comparison video to a Cummins and a video of the 6.4 empty mileage numbers. I'm impressed with what I saw in those videos. This fellow is getting better fuel mileage out of a bigger engine, and a heavier truck than my 360 Mag with all the tweaks done to it for better fuel mileage. And, like Him, I also owned a couple of Cummins diesels, and don't miss them one bit for the same reasons (see the "comments" section).
Mo' Farts
Moderated by "tbagger".
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: Rhinodart]
#1832502
05/22/15 09:23 PM
05/22/15 09:23 PM
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Joined: Nov 2003
Posts: 5,309
CA, Proprietor; The "PALOMINO"...
dynotune440
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CA, Proprietor; The "PALOMINO"...
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9.8 to 13.7 is not that great of mileage, considering its taching out like it is, and looks relatively flat too.
Looks like it was anywhere from 18 liters per 100k to 24 liters per 100k... its a metric Speedo...
I would love to see real world stuff too...
My 2wd Cummins stick is paid for...
Dinuba, California, Home of the PALOMINO ranch and 440 truck farm, where dodge trucks have a home. Have Four 1979 dodge PALOMINO trucks now.
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: dynotune440]
#1832576
05/22/15 11:16 PM
05/22/15 11:16 PM
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Joined: Aug 2005
Posts: 6,054
Salem
Grizzly
Moparts Proctologist
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Moparts Proctologist
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Posts: 6,054
Salem
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9.8 to 13.7 is not that great of mileage, considering its taching out like it is, and looks relatively flat too.
Looks like it was anywhere from 18 liters per 100k to 24 liters per 100k... its a metric Speedo...
I would love to see real world stuff too...
My 2wd Cummins stick is paid for...
I'm not really sure how much more "real world" we can get you other than this Guy with a video camera for 8 minutes and 40 seconds, out on a real road, driving a real truck, pulling an actual trailer, burning real fuel. I can't find anything else, this is what came up. Speaking of real, I bet you're going to tell us your Cummins can pull that trailer all day long and do 27mpg? Spare me: they don't. At his 18,000 pounds pulling a 37' barn door, I find those numbers to be more than acceptable out of a gasoline engine. He was showing 17, 18mpg empty. What do you expect out of a 6 and half foot high, 7000 pound, 3/4-ton, four-wheel-drive?
Mo' Farts
Moderated by "tbagger".
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: Rhinodart]
#1832803
05/23/15 12:40 PM
05/23/15 12:40 PM
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Joined: Nov 2003
Posts: 5,309
CA, Proprietor; The "PALOMINO"...
dynotune440
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CA, Proprietor; The "PALOMINO"...
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No, I get it....
No, I get 17-18 pulling my junk around...and 23 empty doing 60 miles per hr.
The extra cost today makes a 6.7 not cost effective when the mileage is comparable... would probably guess a 6.4 gas would not quite have the power towing that a diesel would though...
Dinuba, California, Home of the PALOMINO ranch and 440 truck farm, where dodge trucks have a home. Have Four 1979 dodge PALOMINO trucks now.
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: Rhinodart]
#1832805
05/23/15 12:43 PM
05/23/15 12:43 PM
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Joined: Nov 2003
Posts: 5,309
CA, Proprietor; The "PALOMINO"...
dynotune440
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CA, Proprietor; The "PALOMINO"...
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And its a little easier to figure when your not looking at converting liters per 100 klicks to mpg
And thats just it, its not mpg that he is showing you...
Dinuba, California, Home of the PALOMINO ranch and 440 truck farm, where dodge trucks have a home. Have Four 1979 dodge PALOMINO trucks now.
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: Rhinodart]
#1832820
05/23/15 01:29 PM
05/23/15 01:29 PM
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Joined: Aug 2005
Posts: 6,054
Salem
Grizzly
Moparts Proctologist
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Moparts Proctologist
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Posts: 6,054
Salem
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He had captions on there with the conversion to mpg, so, that's what I was going off of. I was let down when Dodge released the torque numbers on the 6.4 because they were short of the old V10. But, after seeing this video, I think they have a winner on their hands: 6.4 seemed to move that trailer pretty good.  If Dodge really wants to put a nail in the coffin of the other Manufactures (and the diesel market too), they would put a small, quick-spooling turbo on a 6.4 and give us about 550 lb/ft at 1600-1800 rpm................  That would be the Machine to have: cheaper fuel, far cheaper maintanence, good fuel economy, power to burn, probably $5000.00 cheaper than a diesel, and good re-sale value. Seems to me a certain 650 lb/ft gasoline V8, 22 mpg version does exist in the Dodge line-up that is made to take extended punishment.
Mo' Farts
Moderated by "tbagger".
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: Rhinodart]
#1833021
05/23/15 10:42 PM
05/23/15 10:42 PM
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Joined: Nov 2003
Posts: 5,309
CA, Proprietor; The "PALOMINO"...
dynotune440
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I will agree with that... I would bet that the aftermarket is working on just such an animal
Dinuba, California, Home of the PALOMINO ranch and 440 truck farm, where dodge trucks have a home. Have Four 1979 dodge PALOMINO trucks now.
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: Rhinodart]
#1834086
05/25/15 06:43 PM
05/25/15 06:43 PM
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Joined: Jan 2005
Posts: 12,494
Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
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Posts: 12,494
Kalispell Mt.
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According to allpar (I know lots of bad info over there) you can buy a gas burning truck that weighs almost 14,000 lbs GOOD LORD!!! My (Dakota EXcab 4x4 )truck/trailer/normal family car on the trailer combo weighs about the same as just the new ram. If that is true than 12-18 mpg is good. It took me a lot of mods to get my truck to pull trailer with a combined vehicle weight of 14,000 lbs to get 13. Imagine all that engine technology in a 74 1/2 ton, it would easily get MPG in the 20s even in city driving.
Guess I got to get on car-part.com and find one to stuff in my 99 RT Dakota, anyone want to help out with a little wiring?
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: Rhinodart]
#1834354
05/26/15 04:17 AM
05/26/15 04:17 AM
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Joined: Jan 2008
Posts: 4,280
Canada
WO23Coronet
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Canada
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My 05 1500 got 15mpg on a 500 mile trip towing a 1500 lb car trailer (guessing it's 1500lbs, it's your standard 4" channel car trailer with dual 3500lb axles). Got 12 mpg on the way back towing a '67 Coronet, was doing between 70-75 mph on the way out, and stuck closer to 70 on the way home, and that's driving it with authority, no hypermiling going on.
Last edited by WO23Coronet; 05/28/15 11:52 AM.
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: Rhinodart]
#1837065
05/30/15 12:17 AM
05/30/15 12:17 AM
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Joined: Jan 2003
Posts: 3,048
Richmond, Tx. (Houston)
GTSDave
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Richmond, Tx. (Houston)
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I have had some issues with my 2013 2500 6.7 Cummins, BUT, I really like the mileage.
I haven't weighed my trailer yet, but it is 9' tall with a 28' box, Onan 4K RV generator, roof AC, and fully decked out interior. I generally carry the car, 15gal race fuel, 11gal generator fuel, 5 gal of water, the quad, and tools/spare parts. Add to that the luggage and other items for a weekend of racing and it adds up.
It is a crew cab, short wheel base 4x4 loaded Laramie with the 3:42 gear.
Last year with the truck still fairly new I pulled from Houston to St. Louis for the Victory NSS opener. That run was made with ~600lbs less weight than this year. It averaged 10mpg over the entire trip. This year, with ~ 600lbs more weight, it averaged 13mpg for the trip. We tried to maintain 65 to 68mph on the freeways.
For this years St. Louis trip, I was wagon training with a friend that has a 2012 (No DEF) rear wheel drive only Cummins 3500 dually with the 3:73 gear. He was pulling a 26' trailer with a heavier race car, but no quad and less on board fuel. He burned significantly more fuel than I did, and on the hills I found I had to kick out of cruse because he was loosing 1-2 MPH where mine was maintaining speed. I believe he averaged 9.5mpg for the trip.
My truck is one of the DEF trucks, and I believe it makes more power than his does. I also believe that one of the software updates the dealer did over the last year (there were several) made a difference in my mileage both in and out of town. It now has just under 44k on the clock.
I drive quite a bit on the Houston freeways which could be moving at 5mph or 80mph. Last week I drove just under 700 miles and the farthest from the city was Galveston. Everything else was in town. I made a solid 17mpg for that tank. When we made the trip home to Louisiana with the wife and kids running empty, it made 21.5mpg.
I am much happier with this one than my old 2001 Cummins. The fit, finish, ride, and quiet cab are a welcome change. I am not so happy with the recalls, leaking rear end, and electrical issues I have had. If this last round to the dealer finally straightened out everything then I plan on keeping it as long as my old one which now has 300k on the clock.
The new 6.4 Hemi trucks look like they may be a nice package. The mileage numbers are impressive for a gasser, but I would still have a hard time giving up my diesel for one.
I have seen lots of new 2500's here in the Houston area sporting the Hemi. They seem to be everywhere now days, where just a few years ago if you saw a 2500, you could almost guarantee it was a diesel. Something has definitely changed peoples minds about them.
Rhino I know you have not had the best of luck with Cummins truck, and have many many more miles behind the wheel of them. What is the main reason you are looking at a gasser? Price? Fuel Cost? Less long haul runs these days? Or maybe some other reason??? Just curious.
-Dave
PLEASE Pray for our brothers and sisters in harms way. If you are the owner of a GTS us at the GTS Registry www.gtsregistry.com
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: Rhinodart]
#1839181
06/01/15 08:04 PM
06/01/15 08:04 PM
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Joined: Jan 2003
Posts: 6,266
Renton Washington
Triple Threat
master
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master
Joined: Jan 2003
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Renton Washington
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For what its worth, comparison sake:
2010 2500 4x4 Big Horn Hemi, 3.73's, stock tires. Only mods are a PCV catch can and a Yukon Spin Free hub kit (test kit).
Towing my 28' extra height enclosed trailer from Seattle to Las Vegas and back (2266 miles round trip), 65mph cruise speed. I got 8.9mpg. Truck and trailer combined is just over 18,000 pounds rolling down the road.
That is over a number of mountain passes and bucking 30mph head winds for a couple hours of the trip.
Who said you need a Diesel...
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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Re: Real world fuel mileage for a 2015 6.4 Hemi
[Re: GTSDave]
#1839433
06/02/15 12:10 AM
06/02/15 12:10 AM
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Joined: Jan 2003
Posts: 43,975
Round Lake Beach, Illinoisy
Rhinodart
OP
Rhinotruck
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OP
Rhinotruck
Joined: Jan 2003
Posts: 43,975
Round Lake Beach, Illinoisy
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I have had some issues with my 2013 2500 6.7 Cummins, BUT, I really like the mileage.
I haven't weighed my trailer yet, but it is 9' tall with a 28' box, Onan 4K RV generator, roof AC, and fully decked out interior. I generally carry the car, 15gal race fuel, 11gal generator fuel, 5 gal of water, the quad, and tools/spare parts. Add to that the luggage and other items for a weekend of racing and it adds up.
It is a crew cab, short wheel base 4x4 loaded Laramie with the 3:42 gear.
Last year with the truck still fairly new I pulled from Houston to St. Louis for the Victory NSS opener. That run was made with ~600lbs less weight than this year. It averaged 10mpg over the entire trip. This year, with ~ 600lbs more weight, it averaged 13mpg for the trip. We tried to maintain 65 to 68mph on the freeways.
For this years St. Louis trip, I was wagon training with a friend that has a 2012 (No DEF) rear wheel drive only Cummins 3500 dually with the 3:73 gear. He was pulling a 26' trailer with a heavier race car, but no quad and less on board fuel. He burned significantly more fuel than I did, and on the hills I found I had to kick out of cruse because he was loosing 1-2 MPH where mine was maintaining speed. I believe he averaged 9.5mpg for the trip.
My truck is one of the DEF trucks, and I believe it makes more power than his does. I also believe that one of the software updates the dealer did over the last year (there were several) made a difference in my mileage both in and out of town. It now has just under 44k on the clock.
I drive quite a bit on the Houston freeways which could be moving at 5mph or 80mph. Last week I drove just under 700 miles and the farthest from the city was Galveston. Everything else was in town. I made a solid 17mpg for that tank. When we made the trip home to Louisiana with the wife and kids running empty, it made 21.5mpg.
I am much happier with this one than my old 2001 Cummins. The fit, finish, ride, and quiet cab are a welcome change. I am not so happy with the recalls, leaking rear end, and electrical issues I have had. If this last round to the dealer finally straightened out everything then I plan on keeping it as long as my old one which now has 300k on the clock.
The new 6.4 Hemi trucks look like they may be a nice package. The mileage numbers are impressive for a gasser, but I would still have a hard time giving up my diesel for one.
I have seen lots of new 2500's here in the Houston area sporting the Hemi. They seem to be everywhere now days, where just a few years ago if you saw a 2500, you could almost guarantee it was a diesel. Something has definitely changed peoples minds about them.
Rhino I know you have not had the best of luck with Cummins truck, and have many many more miles behind the wheel of them. What is the main reason you are looking at a gasser? Price? Fuel Cost? Less long haul runs these days? Or maybe some other reason??? Just curious.
-Dave Thanks for the update on your diesel Dave!  The reasons you gave above are spot-on. I am staying close to home nowadays, Carlisle will be the farthest I plan on driving now, which is 13 hours. The power of the new hemi, and the price are really the main reasons. I had ordered a new V10 2500 quad cab in 1995 so I familiar with gas vs diesel and the fuel mileage difference, but if the 6.4 trucks are getting good all-around mileage then I will save the $8K on the difference in a diesel. Diesel is actually cheaper around here, $2.99 for regular and $2.56 for diesel, but I am sure that that will change soon.  I can buy a crew cab 6.4 snow chief 4x4 for around $35K, seems pretty cheap! I am not sure if the 8-speed auto will be available next year or not, still waiting on real-world info on those yet, as we all know how I treat transmissions... 
Last edited by Rhinodart; 06/02/15 12:15 AM.
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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