What causes excessive black smoke from the exhaust of my C-Class?

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What causes excessive black smoke from the exhaust of my C-Class?

Black smoke typically indicates incomplete fuel combustion, which may result from clogged air filters, faulty fuel injectors, o r turbocharger issues, leading to higher emissions and reduced fuel efficiency.

Talha Kyanii asked on 10 Oct 2025 16:59:59 pm

1 Answer

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Talha Kyanii - on 10 Oct 2025 17:01:10 pm

Black smoke indicates excess fuel burning due to clogged air filters, faulty fuel injectors, o r turbocharger problems reducing air intake.

Replace o r clean air filters regularly to maintain proper air-fuel balance.

Have fuel injectors inspected and cleaned o r replaced if faulty.

Turbocharger leaks o r failures also cause poor combustion and should be repaired promptly.

Addressing these issues improves emissions and fuel economy.