i'm sure some are (the noises)...but i've had mine since 2003 brand new - i had several diff. rattles about 2 months after driving off the lot...ahhh, the days before the TSBs were put out - i had a very hard time with the dealership - the rattles always (murphys law) vanished when i'd take it in for repair. i made several trips:
one for not being able to put more that about $5 in gas at a time
another for the numerous rattles
another for the tire feathering and tire roar
another for my window clicking and getting grease streaks
another for brakes after about 8K
another for clicking rear axle
...all in the first year...man did i wanna cry!!

and now the pass door (just fixed myself) and my dash/windshield (not fixed)...

...but is still love my POSH Z...despite all my problems i can't see myself driving anything else - i remember when i first spotted a Z in 1986 in kenya..then to see it again years later in the US..i was destined to own one...LOL

 

If you want to keep this car you will have to live with rattles. Mine rattles like crazy. I have them in the doors and one real bad one on the dash near the passenger side window. I dynomatted the doors and placed foam in both, but they still rattle.

 

brand new 06 and sometimes I get a slight rattle coming from (as far as I can tell) the passenger door handle. Sports car + stiff suspension = rattling interior (give it time).

 

Where can I find this TSB? I searched NissanHelp.com, but this one is missing.

 

When AM radio is on it rattles. WTF is that?!

 

rattling a pillar arm on the passenger side. Doesn't bug me one bit though. It's hard to hear that when you listening to your tires to make sure they aren't loosing too much traction as you take a corner.