I'm pretty sure all cars have a little bit play in the steering wheel when the car is shut off, I just tried in my Mercedes and there is about an inch of play (and this play has no effect on wheel movement). I remember as a child I was playing in my fathers car in the garage and I tried my hardest to turn the wheel past the inch or so of play to the point it literally locked in place, there was no play at all anymore, whoooops! I high tailed it outta there and the next time my father tried to start the car he couldn't even turn the key in the ignition, I don't remember how he fixed it but he eventually got the car started.