In the United States, the have laws to protect consumers who buy new cars from manufacturing defaults. No process is perfect. With thousands of parts going into creating one machine, there's just an inherent chance for something to go wrong because of part defects when putting something together on a factory line. They're called Lemon Laws. They vary from state to state but essentially covers any performance problems in a new car in the first few weeks.
Now I've been having some issued with a evaporation purge valve in my fuel line. It's been going on for about a year. It just decides to not play nice once in a while. Doesn't seriously affect the car's performance (as far as I know) but it does keep the car from passing the NH state inspection next week. Usually they test this valve and it tests out fine. Every dealer I've shown it to has said if it keeps acting up, to replace it. Me being stubborn, I won't replace it until the tests definitively say this part is broken. Much to my chagrin, the test on Friday declared this valve broken. Unfortunately, my car is well past the lemon law stage.
Apparently, there is no Lemon Law for body parts. I'd gladly swap my pancreas out but I guess I'll just keep rocking my pancreas impersonation skills.