What are the symptoms of a faulty ignition coil in a Mercedes C-Class?

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What are the symptoms of a faulty ignition coil in a Mercedes C-Class?

I drive a 2013 C200 in Lahore and recently noticed rough idling, engine vibration, and reduced power. A local mechanic suspects an ignition coil problem. What are the common signs of a failing ignition coil in Mercedes C-Class models, and how can I confirm if that’s the issue?

Talha Kyanii asked on 10 Oct 2025 17:24:20 pm

1 Answer

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Talha Kyanii - on 10 Oct 2025 17:25:20 pm

Common symptoms of a failing ignition coil in a Mercedes C-Class include:

Rough idle and engine vibration

Engine misfire, causing jerking o r hesitation during acceleration

Check Engine Light CEL illuminated with misfire codes P0300-P0304

Reduced engine power and fuel efficiency

Difficulty starting the engine

In Pakistan, these symptoms can worsen due to poor fuel quality and heat. A diagnostic scan using a professional OBD-II scanner can confirm which coil is faulty by identifying misfire codes specific to cylinders.