Just finished a trip from Phoenix to Monterey which was about 1400 miles with the Badlands. Traveled the I40 route and ran 70 to 75 mph most of the way. Got around 24 mpg calculated
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the problem is the conversion changes as the numbers change.. its because we are trying to compare two different readings, one is a consumption over a fixed distance, the other is a distance for a fixed volume. they don't convert nicely so you end up doing two conversions to do it. and the lower the L/100km is if you start rounding off the farther it will be out.I would not fuss about KM/L. That makes sense. Tis consumer based.
The conversion would be just for us to multiply by 2.35*. Easy peasy.
It is the inversion that is the issue.
* Lets see, can we get close without a calculator?
1. Round off 14.7 to 15
2. Double the number. 30
3. Find 10% (move the decimal) 3
4. Find 5% (1/2 of 10%) 1.5
5. Add them up. 30 + 3 + 1.5 34.5
Second try: 12.8
13... to 26... get 10% 2.6 and 5% is 1.3 so about 30