17 MPG when towing my outfit or not. GMC Jimmy 1998 vintage with 320,000km on it. Never alters.
I don't fill up before and after each tow, so i can't give accurate numbers, not sure how everyone else is figuring theirs, unless they top off after before and after each tow?
I can see it in your case. My case, as I don't have to travel far, is probably to similar to many others. I'm not filling my tank for a 35-40 mile RT. Doesn't take a brain surgeon to get my pointIt is exactly 200 miles RT to Solomons. The truck has a 26-gallon tank. I fill up when I leave and I'm on empty when I get back home. Repeat the trip 50 or more times with the same result. Doesn?t take a rocket scientist to figure it out.
I suspect people are using the inaccurate overhead MPG displays in their vehicles.
Maybe it's close SOMETIMES, but none compare to hand calculating.
Enjoy that older Cummins... the newer Dog Rams get worse mpg than my gasser.I get 20mpg empty with a 550HP 8000K lb. truck