I think there is some confusion over what the actual issue is. I am not talking about range. And, by the way, this user family has a pretty darn good understanding of the technology as my husband has a Master's of electrical engineering. We completely understanding that conditions and driving...
We have a 2015 Soul EV and have experienced exactly the same problem. 100% charge on purchase in June was in 180s. Within a few weeks we only saw 170s, then, occasionally in the 160s. Another few weeks and no more 170s. Consistent 160s and then 150s started to show up. This trend continued...