Quote:
Originally Posted by stuklr
Think Top up Vs Down affects mileage?
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From a technical standpoint? Yes, the aerodynamic drag increases, so your car has to "work harder" to cut through the air.
Is it noticeably different? I would doubt it, maybe by .5-1 mpg difference.
On my first fill up I achieved a 13.5 MPG. This scared me because I drove extremely carefully and did not rev the car beyond 3000 RPM (was still learning how to drive stick).
I think it was a miscalculation, but I'd like to think it was true just for fun. I get around 16-18 MPG, and interestingly it doesn't change much even if I try to drive conservatively or boot it all the time.