My sunroof first of all went bad and started giving me problems, then my remote for key-less entry and right after the lock on the door went bad and now Finally the Leak in my trunk and it goes in the rear seat. Now I have this awful smell because of the water.
The car is the worst investment I have ever made. I would never buy from Dodge again.
I went to the dealer to tell them that this is a common trouble and the company should be responsible and all they can say was "my car is no longer under warranty" my car is 4 years old and rust proofed every year. no reason for a leak.
Ditto on my 2002 Neon with the leaks. The taillights and the dealership added spoiler appear to have faulty seals. Mold and mildew are not my favorite aromas, and the water does not get quite deep enough for a bath, but pretty close.
New cars don't need to be rustproofed when they're new unless your planning on keeping it a very long time (to become a classic car). Though waxing it will help.
Sources: http://money.cnn.com/2003/12/02/pf/autos/f_and_I_products/index.htm
http://www1.excite.com/home/info/learn2/learnlets_qa_overview/0,14917,auto_1091_0,00.html
http://www.cartalk.com/content/columns/Archive/1995/December/08.html
http://www.answerbag.com/q_view.php/7615.