I don't see exactly what is the problem, i have a Nissan leaf from 2011 its now 10 years old and it shows about 60 miles of range on a full charge but I would say its more like 40-45, it still fits to most of my needs and if i drive long then i have to plan it well, if you want the best range forget using your heater. Also i would never buy a Nissan leaf again because it does not have thermal management, so when the battery gets really warm it often losses power because of it as well as degrades the battery much faster than if it was cooled. But if i can survive fine,(which i have for the last 4 years) on 40-45 miles then i think i would be on the moon with 100, regardless, electric cars always need good planning for long trips.