Range was down to 57 miles and nearly on red so, without my Amex, I thought I'd stick £10 in at my local shell to see me through until the weekend when I will do a bigger fill up when I have my air mile card on me.

Anyway, I put the fuel in, got in the car, drove away, fuel gage didn't move and range stayed at 57 miles. Drove about a mile home and still no movement, parked up, turned car on and off a few times and the range remains at 57 miles and the gage exactly where it was before I stuck £10 in. It was shell ord so we are talking just under 10 liters.

Headed out on a short journey tonight, not sure if anyone has had any issues with this?

I remember putting £10 or £20 worth in once and the range didn't alter, but didn't fall either. I suspect the software is smart in that it doesn't expect so little to be added in one go. 

Used to do the same in my XF as well, not sure why this is - £20 seems to make it move.

Having said that, I put £30 in mine the other day and it didn't move, much to the amusement of my work colleague sat in the passenger seat who said "I know its a 5.0 Supercharged...but 0 miles for £30..."!! 2014.5 Mariana Black 5.0 Supercharged V8 Autobiography