As someone noted above, my expiration date is early October, 2021, so about 2 years and 2 weeks.Is your ending date exactly two years from the day you bought the car? I got the run around on the Supercharging network credits for the week leading up to taking possession. Everything from no free miles to 2 years, but when I walked out the door they said it was strictly 1,000 miles. I've only supercharged twice in four months so I didn't pay any attention to my account. Now that a supercharger opened in my town this week it may make me think twice!