I left my car at an airport car park for nearly 7 weeks
It lost 3% of charge
It did loose a fair bit of charge in the first 20 minutes of driving it though because the batteries were cold
Overall very impressed with its ability to hold charge

I’ve just gone on to octopus go after 5 months of meter problems
16-74p /kWh in day 5p off peak from 6Jan for 12 months

I’m going abroad for 6 weeks and plan to leave my id3 in an airport car park
If it has 70% charge when I leave it
Where will charge be when I get back in it ?

On the we connect app
You can set it to stop charging at 80%