If you are talking about what I think you are, then your car 'wobbles' back and forth only once or twice, then stops, right? If so, I would say that this could be considered 'normal'. My car did it when it was new. It irritated me to the point that I went to the dealership and drove another 3 for comparison. Sure enough, that test car did it too. I think they mostly do that when they're newer. I haven't noticed my car to do it in a while now, and I occasionally do try to pay attention for it at stop signs/lights. If I had to guess, you'll notice it start to lessen after a thousand or two miles. It's no biggie.