avezbakiyev, I've been following this thread with great interest. Are you the original owner of the car? The reason I ask is that I've been involved in several cases similar to yours. In each case we found that the vehicles had been involved in serious collisions at some point in the past.

By all means, the first thing you should do is have the vehicle inspected at an MB dealer. If they find that the vehicle has sustained non-warrantable damage, ask them to show you. If no reason for the crack is found, ask the service manager/director if MB will pay for the repair. A previous post suggested getting a lawyer involved. I think you should try to resolve the issue on your own.

Most members of this Forum would be surprised to learn that MB is really pretty good about helping original owners, whose cars have legitamite, warrantable issues, after the warranty period is over. Good luck and keep us posted.