If you follow the rules of the road, it would not be "illegal". But, I guarantee that long before they cared enough to change their mind, they would sue you for defamation. They would probably win too. Unless YOU could prove it is, in fact, a factory defect. Not just suspect, but prove.
Why was the class action lost?
OK, thank you.
What if it was to say something easily proven, like:
$6,000+ REPAIR QUOTE
AFTER WARRANTY; BEFORE 100k MILES
SEARCH: MERCEDES BALANCE SHAFT
I understand that the warranty was never supposed to be forever, but I don't think it's unreasonable to expect the manufacturer to take responsibility for a defect affecting thousands of vehicles which can cause catastrophic engine failure. Maybe it hasn't been proven that the sprocket was defective, but Mercedes claims that once you repair it, you never have to worry about it again. Plenty of cars experienced the failure during the warranty period (I've heard in the 30k mile range for some). So if the part is not defective, how can they claim that the new part will prevent this issue from ever happening again? I don't know where the information originated, but I have heard that the new part is properly manufactured and that's the difference. They had a bad batch, it happens. I'm surprised nobody ever performed a hardness test on the old and new sprockets when preparing for the class-action suite.
If the timing chain slips off of the sprocket, valves and pistons will try to occupy the same space and the engine will be a total loss. Best case, by the time the check engine light comes on, you already have metal shavings in your oil. Instead of addressing the issue before it caused damage, they let it eat and let the customer bear the burden of their mistake. Legal or not, I believe it is immoral and it's certainly not a good way to win the trust of the consumer.
Maybe I sound like a whiny little kid, but it just makes me sick to think that I'm going to pay them to fix this, and they are going to turn a profit. If there's any way to not be a victim of circumstances, I want to give it a shot.