This MG ZS ev has been averaging 4.2-4.3 miles/Km which I'm really happy with for this crossover vehicle. I've been sorting out the bluetooth scanner on my mobile phone for real time accurate readings of the battery SOC (state of charge) among dozens of other sensor reading.When the dashboard reads 100% charged it's actually 96.8% which is the upper buffer limit.
If you're planning on running the battery down to the wire this scanner tool will give you a lot more accuracy as to the charge left in the battery.
I believe when it goes in for service the software update will reduce the 455.2 V down to 450V to make a bigger buffer so as to let the braking regen put power back into the battery straightaway instead of waiting until the battery is depleted a little from a 100% charge.
I'm still only charging the battery to 75-80% which is the sweet spot if you're not using the car everyday, Not good letting a 100% charged ev sit for days.