That figure is based on my tracking within Fuelly - C350e (Mercedes-Benz C350e Plug-In Hybrid) | Fuelly
Do you mean a range figure like this? http://i.imgur.com/9wq4lCA.jpg I just take the electric figure off to see how far I can really go, but it varies on how you're driving.
I've also noticed below around 50 miles the range doesn't display a figure, but within the Mercedes Me app you can see the actual level still!
Yes, I have the same range display.
On a Monday, the range might show 250, but I know that I will be doing at least 50 miles on electric and 50 on fuel, so at the end of the week it should be at 200 having travelled 100 miles.
I only got ConnectMe app last week so haven't needed to fill up since I got it, but I will have a look next time.
I am currently on 60.1mpg based on a mix of petrol and charging. My Octavia would have been on about 42 for the same.