I drove the last 10 miles to so into the office without using any fuel. Amazing I hear you say, was it downhill? I have to confess that I probably did use some fuel, it was just that my 'miles to empty tank' indicator was showing zilch at about 10 miles to go. I guess it would be quite difficult to build the correct algorithm that could calculate miles to go with all the variables it would have to take into account - current consumption v. previous consumption are the basic inputs, but it has to make some sort of decision based on a time period. I read somewhere that the VW group 'current fuel consumption' calculation is based on the last 35 metres, which seemed to me to be a bit of a short distance to use, but using a longer distance would average it out too much.
Anyway, 100 quid took me just over three quarters of a tank which a bit depressing.
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