smnewport wrote:It’s really the consequence of the degradation that I need to contend with. Not sure if Nissan would even offer a replacement pack 10 years from now when the range is no longer viable, in which case the car would become an overly-priced paperwork that the only option I have left is to part it out.
Since it's a 2017, and your commute range is 20 miles, the scenario that you're afraid of will NOT happen.
Either you'll lose 4 bars (and thus only have ~50-70 miles of range per full charge) within 8 years, or you'll lose only 3 bars or less by year 8 (and not qualify for a warranty replacement). In the former, you'll get a replacement battery per warranty. In the latter, you'll be averaging 4% (or less) battery capacity loss per year. So by year 10, you should still have AT LEAST ~60% battery capacity remaining, which is ~50-70 miles of range (depending on your driving style) . Assuming degradation accelerates after year 8, let's say down to 40% capacity, that's still 35-45 miles of range. Now beyond year 10, we're kinda of learning as we go along as the 2011 leaf batteries continue to age.
Now if you're concerned about long-term depreciation. With your commute distance, a used leaf would work just as well.
Factoring all the money you'd save on gas, maintenance, and smog checks, the out-of-pocket cost of a replacement battery (or even a 2027 leaf) would be chump change.