It seems to vary by dealer depending on the capacity of the shop, mood & manner of the service mgr., etc... Some forum members in the Mid-Atlantic region have a willing Benz dealer. You would think that since the MB service dept preps non-MB trade-ins for resale in the used car dept, they would work on X-Fires.

MB is one of my clients, and I'm not aware of any cross-service policy ban from HQ. Even though our cars are based on a dated SLK chassis, I still think one would be better off with a good independent shop specializing in MB, BMW & Audi.