One problem related to diesel engine has been reported for the 2013 Mercedes Benz C250. The most recently reported issues are listed below.
On my 2013 C250 only with 55k miles, a rattle noise begins on the engine(sounds like a diesel engine) the exhaust crankshaft adjus, central valve& crankshaft tensioner defaults) there where 3 cars all 2012 C250, 2013 C250 in the mercedes-benz dealership (mercedes-benz of coral gable with the same issue) this is a clear and well stated and recorded cases in which mb USA should accept the defect and recall this issue, many people also in the record have payed $4-5k for this common issue. Finally, NHTSA should look into this matter and force mb USA to own this well too common defect. I am obligated to ask for loands to pay for something that is a clear manufacture defect.