I live in Southern Utah and I go to Salt Lake every year for FanX. I'm going from 2700' above sea level to 4200' above sea level. And there are several mountain passes that you have to take, ranging from 5800' to 6600'. I'm lucky if I get 15.5 mpg.
I found manually shifting on hills to help as well. I just watch the tach to keep the R's consistent.It's done just a tad shy of 16 on previous trips.
This is the first time I didn't stop any place along the way to buy food, ice and brews - Stocked up beforehand, and then drove non-stop.
No cruise control (IMO, it's too aggressive about wanting to keep the exact set speed), and I let the speed slide a bit on "hills" (mostly just overpasses) - No extra throttle unless the speed dropped below 60 uphill, and no less throttle unless it got over 70 downhill.
If you’re hand calculating it should be spot on accurate. I reset my trip meter (not the computer average display crap) on every fill up. Whatever your miles on that trip was when you fill up to pump stopping is how much gas you used on that trip. Divide the miles by the gallons the pump says and that’s your mpg. How can it be off?Which is it?
The dash display never lies.
The dash display always lies.
Heck, even hand calculated fuel economy can lie when one has over-/under-filled the tank.
By slightly overfilling the previous tank coupled w/ slightly underfilling the next fill-up (or vise-versa)...the numbers will be fudged to a degree. Whutevuh.Divide the miles by the gallons the pump says and that’s your mpg. How can it be off?