Mercedes Benz C300 owners have reported 37 problems related to crankcase (pcv) (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mercedes Benz C300 based on all problems reported for the C300.
P052e pcv value problem google search results show this is a very common problem, and despite being a component of the vehicle emissions system, mercedes is refusing to repair under the emissions warranty.
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all problems of the 2015 Mercedes Benz C300
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Pcv (positive crank ventilation) error fault. Error message keeps coming and is affecting a large number of vehicles.