I live in Auckland New
I live in Auckland New Zealand and have a 2017 40KWH Leaf that I got as a Japanese import. It has now done 26000 Kilometers ( I think that is about 16000 miles) and so far there is no loss of range or noticeable degradation of the battery. I am still getting the as new range from the car, but rapid charging is slow. 30 kwph max which is lower than cars that were not originally made for the Japanese market.