I have been a member for over 5 years. Zipcar used to be a very good company which I used to recommend to friends and family but not anymore. My card stopped working, and there was an option of a remote unlock after a series of verification questions. This amazing option was removed, and now you have to get the card send to your home address, which they say takes 3 to 7 days. If you have planned something that depends on a car to go 100kms one way, you are left in the lurch. In addition to that, I was told by a customer service representative that my card would be on the way. Lie. He did not send it, and 10 business days later when I called to ask about the status, they said that the previous person did not logged the request.
Another big change, that is really inconvenient, is that you cannot longer cancel the same day. This used to be okay, but now there's a 100 dollar fee or something like that attached to it.
Use zipcar at your own risk.