Highcountry
Active Member
- Joined
- Jan 15, 2021
- Messages
- 168
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- 144
2020 2500 CC Longbed 4x4 Cummins, I have about 7,000 miles on it ( bought it January of 2021) Best I've gotten was 23 mpg on a 320 mile round trip when I didn't exceed 65 mph almost all freeway. Worst was vacation last year, just under 14 mpg towing my ski boat and fully loaded hauling butt most of the time with steep mountain passes in tow/haul and using the exhaust brake. My all around mpg is 17.5-18.5 mpg depending on usage, weather etc. These are all hand calculated #'s the computer is about 5-7% optimisic in my experience