Fuelly mileage of the big three diesels
It appears the new 10 speed in the Fords made a significant impact in catching up with the Cummins fuel mileage in the 2500's. Although it is still too little info in all of the new 2020 models to te...
Forum Discussion
Are those towing numbers or a mixture of towing/not towing because I have a 2020 Silverado 2500 Diesel with the 10 speed. When not towing, I get 17.5 around town and 23.5 on the highway. My numbers are by doing the math, not the computer numbers. Granted I only have 2,500 miles on the truck so far but no way the average is 14.4mpg with the GM models. I'm guessing the Fords and Rams are getting much better mileage as well. I can't offer towing mpg's because I haven't done any towing with the truck yet but those ratings seem way off.
