Quote:
Originally Posted by Susanne
I'm not sure the relevance of the number of those who do not submit data.
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(See the first point in post #21)
Without seeing how many failed to report, we don't know the potential skew in the results.
Just consider seasonal variations over 4000 miles. With biased reporting, they by themselves could explain all the results you are showing, without your product doing anything at all.
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2016: 128.75L for 1875.00km => 6.87L/100km (34.3MPG US)
2017: 209.14L for 4244.00km => 4.93L/100km (47.7MPG US)