Accuracy of the MPG calculation seems to differ from the basic maths?
Why would my avg UK MPG figure be showing 42.4 when the total miles are 25511, litres are 2770.11 and calculating a UK mpg which actually equals 41.87 for my 123d?
Also found the same on my Kuga.
Total miles of 14588, litres are 1977.91, shows avg mpg to be 34.5 yet the correct calc is 33.53?