Hi,
I am getting the fan on at any time,after a 100 mile journey at 70 on the motorway it could be on or if I have just popped up the road etc.
The mpg figure comes from the function where you can check efficiency and also scroll through phone contacts.
If I use the little wheel on the steering wheel left I think it just shows mpg from present journey and also driving time ?
I have tried super diesel that I have always used in other cars and also the normal branded (esso,bp,shell) but mpg is the same.
I did do one 35 mile journey that was cross country and that particular journey showed 51mpg which surprised me because it was all B roads etc.