2018 Ram Cummins Towing 12.5k mpg
10.87 mpg! Not great, but not bad considering the brick it was towing. The Ford Powerstroke they tested earlier was 10.05 mpg which still is not bad. 2018 Ram 2500 HD Cummins MPG towing test ...
Forum Discussion
ShinerBock wrote:
I record my computers mileage and my hand calculated mileage on my aCar app every fill up for tax reasons. When my 14 Ram CTD was stock, the difference between the computers mileage and hand calculated was between 1.5-3 mpg off every time. After I tuned it and worked with my tuner to fix this, it is now within .5 mpg off.
I am not the only one either. if you go to the Cummins forums you will find that many have their computers off as much as mine was stock while others were dead on. Luck of the draw I guess.
At least it is not like old truck. My old Ram 5.9L CTD, my dads 7.3 PSD, and father in law's 6.0L PSD is were off by 2-4 mpg all the time.
My 2014 Ram is consistently off 2-3 mpg , the computer always reads higher then what I get hand calculated . Its actually to the point I really don't need to hand calculate I know within 1 mph of what I am getting.
