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Old 06-24-2017, 02:51 PM   #4 (permalink)
Diesel Newbie
Join Date: Mar 2017
Location: North Dakota
Posts: 31

Just got back from a 2500 mile trip to Kentucky in my 2500 HC. With a slight tail wind for the first 300 miles I got 23mpg, then at the 900 mile point, regen took me down to 22.1. On the way home I was getting 22.5 until I hit a regen and a 30mph head wind. Ended up the last 1300 miles at 20.4. Overall was very close to 21.5. Most of the miles were at 70mph. With 6000 miles my On Star phone app shows17.6 lifetime average. About 400 miles of that was towing my 35 ft. travel trailer. I'm satisfied.
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