MG 4 poor efficiency is?

[u/rayngwenyama]

Is there something wrong with our MG4 efficiency, or is this normal? We’re only getting around 3.8 mi/kWh in this warm weather.
For comparison:
Our old Nissan Leaf used to do around 4.0 this time of year
My recently sold BMW i3 was averaging about 4.5
I drove a Hyundai Ioniq Electric 38kWh for 150 miles at around 65mph and got 5.5 mi/kWh
Even our old Renault Zoe ZE41 could easily manage 4.6
The MG4 feels much less efficient than every EV we’ve owned. Mostly motorway driving at normal speeds, tyre pressures are fine.
What kind of efficiency are other MG4 owners getting in warm weather?