I definitely agree here, despite what the official MPGe figures say.My experience with the kona tells me it more efficient than the m3.
When my Kona 64 was fully charged, it showed a range of about 300 miles, so nominally the same as my LR AWD. There is a big difference between the WLTP quoted range - 279 for the Kona, 348 for the M3 - so you’d really expect the M3 to go further.
I had the Kona for 11 months, and covered 15k miles. I’ve had the M3 for 11 weeks, and I’ve covered just over 4k miles. My driving style hasn’t changed. I drove the Kona in Standard mode, I drive the M3 in Chill mode.
With the Kona it was easy to get the consumption down to 250Wh/m, and not hard to get it down to 200Wh/m. So far I’ve not really seen anything that low in the M3.
So in my view the published figures don’t tell the full story.