2014 RAM Diesel 1500

I had a car moved from California by a guy with a seven car hauler, pulled by a Ram 4500. Same engine as my 12', but with the Aisin Transmission. The vehicle on top was a ram 3500! he said it got 7.5 mpg all day long, coast to coast. I would estimate 30,000 lbs plus the weight of the trailer, about 5,000 lbs?
Under forty thousand total, but got that mileage!

my 12' got 12-14 mpg city, Until it hit 14,000 miles. It is a 3500 Long bed 4wd auto.
Now it sits at 15-16, and Improving as the miles pile up. I keep it in perspective with my 96' Club cab LWB 4wd with the 180 horse engine. Towing outside overdrive it would lumber along at 65 mph or so, but got 16 towing 7-8,000 lbs. Empty, cruising city or highway, it got 16 MPG. So the 12' is over twice the horsepower, same mileage. I did get 18-20 with my 03' and 05', but they were Manual transmissions. However, If for any reason my wife had to drive, An Automatic it had to be. I bought one of the last 12's in order to not buy the Piss required of new Diesels.