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Old 04-13-2009, 12:21 PM   #2 (permalink)
PaleMelanesian's Avatar
Join Date: Dec 2007
Location: Texas
Posts: 2,320

PaleCivic (retired) - '96 Honda Civic DX Sedan
90 day: 69.2 mpg (US)

PaleFit - '09 Honda Fit Sport
Team Honda
90 day: 44.06 mpg (US)
Thanks: 610
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This means that for my commute, the SG reported average speed is usually about 24 mph. In reality, I'm usually driving in the 30-40 mph range. Stops along the way drop the average.

If you're planning a trip, though, it's actually a more useful metric. Any stops along the way have to be accounted for. With a 60 mph average driving speed, my highway trips are often "rated" at 50 or lower mph. The 50 mph average will tell me the actual trip time, and not some academic-paper theoretical time.

11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles
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