Why do ignition coils fail frequently in Mercedes C-Class cars in Pakistan?

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Why do ignition coils fail frequently in Mercedes C-Class cars in Pakistan?

I’ve had to replace ignition coils twice in the last year on my 2012 C180. I drive mostly in Karachi. Are these coils known to go bad quickly in Pakistan? Could it be due to heat, fuel quality, o r poor parts? Whats the root cause of repeated coil failure?

Talha Kyanii asked on 10 Oct 2025 17:24:39 pm

1 Answer

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Talha Kyanii - on 10 Oct 2025 17:25:37 pm

Frequent ignition coil failure in Pakistan is mainly due to:

High ambient temperatures and heat soak especially in cities like Karachi and Lahore

Low-quality o r adulterated fuel which causes incomplete combustion and extra stress on ignition components

Use of cheap o r non-OEM replacement parts that don’t last long

Poor engine maintenance, such as not changing spark plugs on time, which puts more load on coils

The ignition coils are sensitive to these factors, and combined, they reduce coil lifespan significantly in local conditions.