I’ve got Range readings for over 400 fill-ups. Range varies based on MPGs but we’re not sure how many miles of MPGs it uses in its calculations. My Range can go up or down by about 20 miles between fill-ups if I’m going from daily city commuting to road trips. My best Range was 456 but it usually hovers around 380-430.
The accuracy of the on-board MPGs has been brought up several times. Here’s a repost of a what is said about it last year and it’s still holding true except now I’ve gone 126k miles and 433 fill-ups.
Quote:
Originally Posted by 1000MPH
My on-board computer is very accurate.
Wanna know how accurate?
This is for 115k miles of mileage tracking. 395 fill-ups.
Average of computer readings (computer reset at every fill-up): 20.91mpg
Average of manually calculated readings: 20.98mpg
Total mileage/total gas: 20.97mpg
The worst differences between manually calculated and the on-board computer has been +1.57mpg and -1.46mpg
Out of 395 fill-ups, only 15 times has the difference between hand calculated and on-board computer has exceeded 1mpg.
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