I don't see why they won't go back on the deal. The T&Cs say that things can be changed. The original deal was already changed with the Streetcar -> Zipcar con

I don't see why they won't go back on the deal. The T&Cs say that things can be changed. The original deal was already changed with the Streetcar -> Zipcar conversion. My original Streetcar deal was for no annual fees and a £150 deposit (that would be refunded if I left Streetcar). Zipcar gave me the option of:- a) Getting my £150 back and leaving Zipcar, although I would be free to rejoin and pay an annual sub. b) Keep my existing £0/year deal but have the £150 deposit converted into £150 of credit that had to be used within 9 months (I think). Went for this and the £150 credit was quickly gone in two 24 hour rentals to go see family. To be clear, I kind of expect Avis to end up backing out of the "founder members" deal and I'll be annoyed if they do, but there's nothing much I can do to stop it, and I don't see anything in the existing (or previous) T&Cs that would prevent it. On one hand Avis are big enough to just keep the deal going for the existing members, maybe start to offer a new service that is only available to members that pay an annual sub. Or maybe they're big enough that they don't care about the small group of users that don't pay annual subs and will force them to pay up or go away. [EDIT] And, yes, there's loads of other things they could do to annoy me more.