Gas mileage last trip.
Total weight 12,380 lbs. From home to where I camped was 88 miles and the last 26 miles was graded gravel road. I gained 3300 ft from my doorstep to where we camped. I ran i...
Forum Discussion
jimh425 wrote:JimK-NY wrote:
And where are you getting the mpg data? Not from the truck display I hope.
I’m not sure who you are asking, but most trip computers on my vehicles have been pretty accurate compared to hand calculating.
In any case, mpg can vary a lot by simply using different gearing, going slower, easing into brakes/gasoline, etc.
I recorded every gallon of diesel I put into my 2010 Ram. Periodically I calculated mileage and also compared it with the trip data. Fully loaded I got about 12 mpg on the open road and the trip data typically gave me 13 mpg which is an overestimation by about 8%. With mountain driving the overestimation was even bigger.
If you do record miles and gallons used, it can take quite a while to get accurate data. Pumps are different and it is hard to fill us exactly the same each time. I doubt you can get much accuracy trying to calculate based on 88 miles or even twice that for a round trip.
