Quote:
Originally Posted by nemesisthewarlock
It made a 320 mile round trip had 30 odd miles left in the tank so based on tank size I make my back of a sweety wrapper calculation to be 22.7 miles add the tootalling about and my trip to Porcester Castle from Southampton and back and I don't think the cars computer is that far off ..
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They do tend to be rather ahem on the optimistic side
Up to 4mpg over, so could be 19.8 mpg rather than 23.8
The only way to really tell is by brimming and calculating. I did it once and didn't like the results as much as the little Volvo reading