mcat707
Member
I wouldn't trust the dash readout, and if fill ups are not done the same each time even hand calculations will not be very accurate. Topping off the tank will not provide an accurate number of gallons for the number of miles driven, instead you should take the number of gallons when the pump cuts itself off, each time. I have a hard time believing some of the numbers others have posted stating that they are getting 19 and 20 mpg out of these things, I just don't see how it is possible. This is not to say that anyone is lying, but those numbers just don't seem reasonable based on my experience and OCD level of tracking and calculating (I am a quality engineer and therefore an excel nerd).
I got my '18 OR in November '17 and begin tracking each fill up around the 5k mark in late January '18. I currently have just over 32k and am averaging 16.7 mpg all conditions. Hit the sand a couple of times a year and trails in the mountains a couple of times, otherwise it is a pavement pounder. Only mods are Dobinson's suspension front and rear to 'level' the vehicle which equated to ~1" front and maybe .5" rear, and stock size ridge grapplers in C load. In my calculations I included notes at mileages where suspension and tires were added, as well as noting long highway trips that would skew calculations.
Happy calculations.....
I agree with you and also believe that your 16.7mpg calculations to be correct. As posted above I’m getting 16-17ish MPGs with mixed driving. I’m also very meticulous when calculating my MPGs. I don’t trust the vehicle dash readout and use an app called Fuel Monitor. I enter the mileage and gallons poured in with one click stops every time. Great app to get your accurate MPGs.
I would also see in the Tundra forums people saying they are getting 19-20ish MPGs in a 3rd gen with a 5.7L V8 which I know is BS. They are not calculating the mileage and gallons correctly. My Tundra got an average 14.9mpgs for the past 5 years that I owned it.
