2500 compared to 3500 dually fuel mileage

[Randy Fannon]

I have to upgrade from Ram 2500 Cummins to a 3500 dually Cummins.. the question is to the dually owners, what is your average MPG on daily driving without towing? Around town in my 2500 I get 17-20, depending on how heavy my right foot is!! Thanks in advance

 

[06 Dodge]

I have to upgrade from Ram 2500 Cummins to a 3500 dually Cummins.. the question is to the dually owners, what is your average MPG on daily driving without towing? Around town in my 2500 I get 17-20, depending on how heavy my right foot is!! Thanks in advance

MPG also depend on if you get a 3500 with the HO with Aisin or SO with 68 ref if 2024 an older, also if it has 4.10 or 3.73 axel, if 2025 it will have HO with 8 speed powerline & most likely 3.42 gears based on what I've read expect 2-3 mpg lower.

 

[Burla]

Looks like the weight is nearly identical within 50 pounds, same HP. Gotta figure you will lose 1 or 2 mpg for the dually, maybe get it back depending on gear/transmission, but I think you will be happy. With all the emissions, I'm pretty impressed with those numbers, I guess ram is doing something right.

 

[mtnrider]

You are probably going to be around 13mpg avg daily driving that dually. It's going to be a big hit compared to driving that 2500

.

 

[nlambert182]

It depends on a multitude of factors. Driving conditions equal... below is the average mpg I got on all of my 2500/3500s (pre = with emissions... post = after emissions "repairs").

2012 Ram 2500 SLT
6.7, 68RFE, 3.73 gearing
(Pre)Avg MPG: 14
(Post) Avg MPG: 18


2016 Ram 3500 Laramie
6.7, 68RFE, 4.10 gearing
(Pre)Avg MPG: 16
(Pre) Avg MPG: 18

2018 Ram 2500 Laramie Megacab (current truck)
6.7, 68RFE, 3.42 gearing
(Pre)Avg MPG: 17.5
(Post) Avg MPG: 19.6

These numbers are an average of city/hwy driving empty. On my 2018 now, I can squeak out 23mpg. On my 3500, the best I ever saw was ~20 mpg. That was 70mph on a 5 hr mostly flat interstate trip.