Failed spark plug wires and/or ignition coils can cause intermittent misfires (rough running); the Check Engine Light may also illuminate. Diagnoses of the ignition system will be necessary to determine which components are at fault.
Car Problem Reports
Mercedes-Benz C280 Bad Spark Plug Wires/Ignition Coils May Cause Misfires and Possible CEL
Mercedes-Benz C280 Problem
Average Mileage: 145,258 mi (111,255 mi - 187,777 mi)