Just wanted to share my stats.
I have covered 27k miles in 15 months - I used extended charge 5/7 days and I charge it every day.
I was a little concerned about running this test to see how my battery is doing - I was prepared for degradation since I need to use extended range for my daily...
I have read the comments about getting unlimited mileage lease as opposed to 12k a year.
I expect to do a lot of miles, say 20K, and I would likely buy the car at lease end (and not pay the excess milage overage).
So why would I not just go for the lowest payment with 10k or 12k miles a year...