You right, you won't come anyway near those #'s. You're getting spectacular fuel economy. If it ain't broke don't fix it.I'm going to test drive an XD tomorrow...
I currently have a '14 Ram 1500 with a 5.7L Hemi with variable cylinder management and an 8 spd automatic.
I average 20mpg combined, can get 25-27 mpg highway unloaded, driving the speed limit, no hypermiling, and 10-11 mpg towing an 8k lb travel trailer at the speed limit. I live in Michigan which has low, rolling hills.
Crunching the numbers I get the following:
Gas @ $1.96/gal vs diesel @ $2.19/gal (best prices in my immediate area), DEF $5/1000mi.
500 miles driving Ram vs XD
Combined (20 mpg)-$57.25
Highway (24 mpg)-$48.13
Towing (11 mpg)-$102.05
For the XD to have fuel cost parity with the Ram it would need to hit these numbers:
I'm skeptical it can hit these numbers.
And that's the only reason I would switch--to get either same fuel cost+better towing experience or better economy when towing.