I think the electronic dipstick is designed to show a "level" rather than just empty or needing oil.My diesel has just done 2000 miles an shows thus:To my mind, with the green line not quite going to the top anymore, this suggests I have used a bit but not much - as I would I expect
I have now done 10,600miles - I have put in 1 litre of oil in total in and shows exactly as above.
I don't think I will need any more oil until it needs a service (and oil change) at 20k miles.
I was going to get my wife to do it but thankfully watched this first!
https://www.youtube.com/watch?v=J9mnjFHaBMk