Waxing a new car is fine if you do just that, wax it. There shouldn't be any reason whatsoever to "clean" the paint of a new car unless it has some how gotten severely soiled. If you use waxes with any types of cleaners you're micropolishing the clear coat of your vehicle and actually creating microscopic scratches intended to remove more stubborn, and usually larger, surface contaminants and scratches. Just make sure the wax says it's just wax. I think some of the newer Meguiars products even have cleaners in them. When in doubt, just try Meguiar product #26, the Yellow Wax. It is a *pure* wax with a few other polymers mixed in for better surface adherance. It's considered to be part of the "pro" line of products but you can find it in most auto part stores. It has absolutely no cleaners of any kind in it. If you really want to go all out, try the #7 glaze first, then apply the wax.
Believe me, after having previously owned a black car, I learned real quick how to properly care for a car's finish.
I"ve had my Satin Silver Metallic TSX for about a month now and have applied two coats of #26 already.
Also, if you're going to use a rotary buffer, make sure you get one that spins in a random orbital fashion. This will go a long way towards eliminating those nasty circular pad shaped swirl marks you normally see created by non-random orbital buffers. They are especially noticable on darker finishes.