Но BMW неспроста снял REX c производства, так как сами покупатели уже не брали из-за ненадобности (зарядок достаточно стало).

если быть точным

In a statement, BMW said: “The Range Extender i3 will cease production and we will only sell the pure-electric version going forward. With the gains in pure-electric range, together with the increasing availability of rapid charging facilities we believe the customer demand is shifting to an pure-electric model.”

количество зарядок + увеличение пробега

насчет "не брали" - похоже что твое лично преувеличение

Interestingly enough, BMW is not taking off the range extender due to low sales. In fact, the range extender version of the i3 formerly made up 60 percent of sales, despite a higher price tag over the standard car. The Range Extender i3 will still be available in North America and Japan, where demand remains higher than Europe and the rest of the world.

https://www.electrive.com/2018/10/07/europe-bmw-to-discont...

ТС, любая EV может быть с ДВС