Yeah, I don't think the towing mileage is going to be anything to brag about. Which is fine with me as I don't do more than a few towing trips a month perhaps 50-100 miles.
I would say that 2-3 mpg more than my Silverado 5.3 is about right at this point, although I have seen as low as 14 mpg around town and as high as 23 mpg on the hwy. On the trip home from the dealer at highway speeds 75+ mph it avg. 19 mpg, which is about 2 more than my 5.3L would have gotten. Last year we went on a 200 mile trip and went 55-65 on the hwy (my buddy was pulling a camper) and the silverado avg. high 18's. I was very pleased. I would expect this truck to avg. about 20+ at those same speeds.
I would say that 2-3 mpg more than my Silverado 5.3 is about right at this point, although I have seen as low as 14 mpg around town and as high as 23 mpg on the hwy. On the trip home from the dealer at highway speeds 75+ mph it avg. 19 mpg, which is about 2 more than my 5.3L would have gotten. Last year we went on a 200 mile trip and went 55-65 on the hwy (my buddy was pulling a camper) and the silverado avg. high 18's. I was very pleased. I would expect this truck to avg. about 20+ at those same speeds.