DPF clogged/faulty
Often reportedOn OM642 engines (3.0 V6 CDI), the DPF is reported to frequently clog, perform incomplete regenerations, and in recurring cases develop damage/cracks requiring replacement.
Exhaust Emissions
When buying a used Mercedes-Benz C-Class C350 2014 (205), the most frequently mentioned issue is: DPF clogged/faulty. Also, EGR valve and exhaust gas recirculation are commonly reported.
Engine varies by trim; verify the engine code on the listing.
Listed from most frequently reported, each with its source.
On OM642 engines (3.0 V6 CDI), the DPF is reported to frequently clog, perform incomplete regenerations, and in recurring cases develop damage/cracks requiring replacement.
Exhaust Emissions
Most C350 CDI/OM642 owners report EGR valve failures: soot buildup, clogging, or faulty sensors causing warning lights, power loss, and sometimes limp mode. The issue may recur after valve replacement.
Exhaust Emissions
Injector and high-pressure pump issues are commonly reported on the OM642 V6 diesel engine, causing smoke, rough idle, high fuel consumption, and power loss.
Fuel System
Turbocharger failure or efficiency loss and/or intercooler/intake pipe leaks (boost leaks) are reported. Symptoms include power loss, excessive turbo lag, boost pressure errors, and sometimes limp mode activation.
Turbo
Same trim, different year
We only publish claims we can verify. Cards come from Difetti fault records matched to this vehicle on brand, fuel, engine and generation.