Free: Contests & Raffles.
Our '14 3500 diesel gets 19 empty on the highway, 16 - 17 with a 2 horse trailer. If I remember correctly it got 14 or so over the pass with a 19 ft travel trailer. I've heard the manual tranny gets better mileage but I'm extremely pleased with the auto, especially when towing.
Friend has a 14 1500 3cyl diesel. Getting 21 mph around town and 24+ on the highway. Seems to have plenty of power to pull recreational sized trailers and board as well.
My 14 2500 with stock 20 inch wheels and 1500 miles says it is getting 11.1 mpg avg tonight. It gets 2 mpg climbing hills and 99 mpg going back down those hills My 05 will average 25 mpg on level roads. But with this new truck I don't have to worry about filters, injectors, def, etc, just push a button twice and it will start and warm steering wheel and seats. Plus gas is just a little cheaper.
Caution, Thread jack. (since you seem to have answers of poor fuel economy) Funny... You said that fuel is free, so it doesn't matter. I'm so confused. I am NOT impressed with any of the big 3 consumer diesel truck options right now. I have over 200,000 miles on my 04 6.0 Ford with ZF6spd and in the next couple years I'm likely to upgrade. (Yes, I'll be doing the EGR delete this spring) I'm not a farmer/rancher, and don't 'wear out' a truck like some do. But when it's time, I think I'll be looking for a late second gen Dodge. My son picked one up with a 5.9 HO and the NV5600 manual transmission and that thing is a beast that still has good fuel economy. I think the best deal out there instead of a new LoneStar with a 6.7 and 6spd manual would be to find an early 3rd gen with an NV5600 in good shape, rebuild anything in the drivetrain that needs it, outfit it with some cool aftermarket goodies. Call it good! You can find a nice older truck in the $20's and have a beast that gets good fuel economy. If you have to, dump another $10k into it and have a better 'truck' than what you can buy new for in the $50k range now. I hate all the platform changes and current generation design flaws that aren't worked out yet. -Steve