I'll have had my LEAF for ten months and 13,000 miles in a week or so. All 12 SOH bars are still showing.
I commute 65 miles a day, live in the Phoenix heat, and usually charge twice a day. In the winter I charged to 80% at night and 100% in the day, to ensure cell balancing would take place. Now that it's summer I charge to 80% except when I want or feel I might need extra range. However I actually get 92% (11 bars) during the day because I use the climate control timer.
My temp gauge usually shows 6 bars in the morning, but lately I've started to see 7 more often than not. At noon, when I move my car to put it on charge I see 6 bars, since the morning air is much cooler than my garage is, and I try to park in the shade. When I leave at the end of the day I see 7 bars, no surprise.
Had six Nissan LEAFs in five years. Hope to get another.
Retired Nissan Employee (NTCNA-AZ). Opinions expressed here are my own.