I have heard of numerous broken cams on MBs. They all occured after a tentioner was installed improperly. Do you know how to tell when a tentioner has been installed incorrectly?? .... It breaks the CAM.

BMWs do break cams from improper installation but I have never heard of a MB cam breaking that way. I have never heard of a MB cam breaking from natural causes.

These are the prices one pays for using inexperienced technicians. Anyone that works regularly on MBs knows what breaks CAMs.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician