My first zip car experience was terrible. The sensor wasn't working properly which had me in and out of the car (according to their system) incorrectly. I called and spoke to 3 different people. The first 2 sat there and adamantly told me I was wrong, only to have the 3rd girl profusely apologize and tell me the scanner was not functioning properly. They also said someone would contact me within 48 hours, which they did not. I wrote a review (that they send after your initial ride) and laid everything out, have not heard from anyone to date. They don't care. This is obvious.
What's also obvious, is that they are so GD convenient that you'll let all that sh*t go and get another one a week later. The car I used last night was damaged so I took a picture of it and sent it to damages@zipcar.com (had to call and get that so, you're welcome. Also, the car was booked after me and I was not late returning it (actually 10 min. early) and the next person was already there waiting. I also got the definite feel that since this car is at an apartment this lady uses it as her vehicle. There were personal effects throughout the car, the zip car sticker wasn't on it, and she was immediately there acting like I stole her car. Bit odd.