Quote:
Originally Posted by Torture
Surprised nobody has mentioned that how you drove (city, highway, more aggressive starts/stops, idling, terrain, trip duration?) on each tank could have impacted it as well.
The number of things you haven't controlled for, not using L/100KM, and the small sample size makes this pretty much meaningless...
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There are certainly a lot of variables at play. I just looked at my fuel usage data (I have four years of data) and I have upwards of 10% variance in fuel economy between fill ups (winter variance can be upwards up 25%.)