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
RobWNY wrote:
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.
They are cumulative averages amongst the amount of divers and miles posted in each year. Some get higher, and some get lower depending on how you drive, what type of terrain you drive in, and other factors. Naturally, if you are the type of driver that would get better than average in one vehicle, then you would likely get better than average in another and vice versa. However, these are real world averages which is a mixture between best case scenarios and worst case scenarios.
For example, the 14.6 mpg average for the 2019 F250 is based on average mpg of 126 vehicles, 4,454 fill-ups, and 1,547,129 miles.
