4x4ord wrote:
I have tracked the mileage and fuel put into my truck and calibrated the mpg meter. At my last fill up my trip meter read 14.2 litres per 100 km. Calculating the actual came out to 14.15 L/100 km.
I agree the 10 speed on its own can not account for the increased mileage that the 2021 gets over the ‘17. I think the mileage increase is about 18%. I have no way of knowing where the gain is coming from but maybe 6% is gained directly from the new transmission. I’m possibly gaining an additional 6% due to being able to run 3.31 gears vs 3.55s in the past. The improvements to the engine might account for another 6%.
According to Fuelly the 2017 got 12.9 mpg and the 2020/21 gets about 12.5 mpg. Whether or not my 18% is accurate or not I’ll never know but I’m 100% certain that I’m getting significantly better fuel economy. I’m not saying that the data posted on Fuelly is necessarily wrong but to take that data and claim that the 2021 Powerstroke is less fuel efficient than the 2017 is just not accurate. We have no way of knowing how each of these trucks are being used.
I still don't trust computers and will never trust anyone who quotes them based on my own experience.
Also, you are not looking at all of the data. There is a reason why I posted the gains for the F250 as well because the F350( as well as 1-tons from other brands) vary from year to year depending. One-tons generally get used for towing way more often than their 3/4-ton counterparts hence the reason why I added the data for that as well since it is way more likely to have unloaded fuel economy than the 1-ton group.
The numbers posted are actual recorded fuel mileage(better than the computer), but a group from year A may have more towing miles than a group from year B. Or, the group from year A can have more DRW trucks than year B. Again, I posted info on the 3/4-ton to account for this and all of the data posted should be accounted for, not just cherry-picking parts to make one's favorite look better. If you notice the mileage increase on the 3/4-tons, it is only a 6-7% increase from averaging 2017-2019 versus 2020-2021 numbers.