The Magnusson-Moss Warranty Protection Act has two "implied warranties" any manufacturer cannot just pen away in his written warranty, but all of them try.
15USC50 2300 et. al. is the magic number....
The Implied Warranty of Merchantability, which has no magic end date, states that the materials the car is made of were ready for sale when it was sold. Of course, we know better! The crazing is NOT "normal", just inferior plastic that needs to be replaced at THEIR, not your, expense. The Act IS Federal Law and fully enforceable on MBUSA and Penske. As the SELLER, magic word, the DEALER is responsible to replace the defective parts at no expense to the owner. They'll say no....remind them of their obligation....even after the measily warranty ran out.
The first replacement, in year 3, came loose from improper installation. Number 3 seems to be fine, so far, though it's still made of the same defective Makrolon cheap plastic ($1400) the original was. If it crazes, I'll be back! The problem has NOT been fixed and no recall of any Smart Car has ever been done on a mass scale that I know of.
United States Code: Title 15,CHAPTER 50—CONSUMER PRODUCT WARRANTIES | LII / Legal Information Institute
Para 2308 and 2304(a)(4) are your friends!
United States Code: Title 15,2308. Implied warranties | LII / Legal Information Institute
Have your attorney contact your "NO" dealer if you have trouble.....(d^
Federal Trade Commission, tasked with enforcement, has written a second-grade-level booklet to help your dealer and manufacturer understand what their responsibilities are to you. Luckily, you can read it, too!
http://business.ftc.gov/documents/bus01-businesspersons-guide-federal-warranty-law
Print your dealer his own copy so he can keep it in his office for handy reference before telling you to kiss off in the future. Your service manager has no idea what it says and doesn't want to know, in case there's litigation. "Serve" him a copy, if you have to. He really needs to know!....