I thought I’d take a look at this database (EV Database) you refer to. In reality it calculates the miles per kWh by dividing the battery range of the car by the battery size and theoretically uses an alogrithm based on temperature e.g mild been 23c with ac off (how many weeks do we get 23c in the UK). I’m by no means having a pop at you but really it’s nothing someone with an ounce of mathamatical knowlrdge can’t do at home at their own computer desk. Real world driving I can’ see it being highly accurate in the real world with the majority of EV’s, unless maybe you’re tootling to the shops and back. Put it this way I have my reservations about such a site but hey I could be wrong..
The reason I refer to EV Database is because it is used as a reference by peoples far more knowledgeable than me. No test will be perfect but it is a lot closer than WLTP and can be anything from slightly under or slightly over. The numbers I got for both of my cars were pretty accurate and several others have confirmed that they weren’t far off for them as well.
Yes the maths is simple and still gives maximum range possible in those conditions, which means from full to needing a tow to charge, and we all know that we usually have a buffer at the lower end and we’ll rarely fill up to max. So what we find in real life is always less, with the exception of efficiency.
I started off with an equally high level of scepticism, which is my usual approach anyway, but it is a fair bit more accurate than anything else I’ve seen.
I'm Autistic, if I say something you find offensive, please let me know, I can guarantee it was unintentional.
I'll try to give my honest opinion but am always open to learning.
Mark