We have to remember you are hearing a lot of concerns here in the threads, probably a very small percent of the actual population that has the smart.
When i worked in customer relations I thought the products were junk, but then I realized I was only getting bad calls and it was only about 0.5 percent of the total units sold... So it's not so bad... Nothing major to worry about...
I would be concerned when you see 10+ posts about the same issue over and over again... Then we have a distinct pattern. Like the alarm pops into my head. That could be an issue they have not fully figured out yet...
Time will tell as we get more and more units in the states and more people on this forum...
I agree with GHammerly - Might be a good idea to make a list and take it to the dealer to look over, be hands on and be insistent with them.
I haven't even gotten my smart yet and I know everyone that works at the smart center by first name, it is important to build that relationship, especially when you have issues like these... They are questionable, but they should be able to tell you if it is considered "normal"...
(My dealer is - smart Center VA Beach)