Quote:
Originally Posted by Deveray
People who say the figures came from the onboard computer are correct, the figure I posted was indeed from that source. I have not done the pen and paper test. I recall that the computer does not count fuel used when completely stopped in the total average mpg, so for people who have that kind of commute it will probably overestimate the mpg compared with reality. However, my trip did not include any completely stopped traffic so I have no reason to disbelieve it.
I also think that this represents good engineering and efficiency - that I respect (nearly) as much as the good performance that I can only use when the traffic is not just moving along at steady 60-70.
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The car does count fuel used while stopped. If you want to confirm this yourself, reset the 'average fuel consumption' meter and then when you come to a stop, you'll see the mpg reading drop.