pretty nice on the 4.8is mileage!

I get about 18-19 mpg over mixed driving about 60% highway, I have a 5 speed though and under the impression manual will yield higher mileage in mixed driving.

Last tank I filled up my range was about 430 miles, lifetime consumption says 18.9 MPG on the BC

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards