The new Cummins 6.7 L is a hoss. Mega power and torque. Emissions equip is a problem. What I have learned after 3 trips to dealer - don't lug the engine, keep the rpm in the 1,800-2,200 range (easy to do with the thumb shift on the stalk), don't let it idle for long periods (why would you want to with current diesel prices), if you putt around town, periodically take it out on hwy and run it hard, use the engine brake, even when not towing (this also helps save your brake pads), no problems since I made these adjustments, hope this helps. Previous post is accurate in that it drives like a 1/2 ton, nimble. On hwy at 65-70 mph - 22-24 mpg believe it or not, city 16, towing hwy 16, city 13.
Fuel mileage, style, very tight body, no rattles or noises, great stock sound system
Emissions problems, paint quality should be better