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Replacing Spark Plugs on a Mercedes A-Class

Model: Mercedes Classe A W169 - Years 2004-2012
Part: Spark plugs

Replacing the spark plugs on a Mercedes A-Class? Here’s how to remove the faulty plugs. Pull the hood release lever and lift the hood, securing it in place. Remove the plastic soundproofing panel covering the engine. Disconnect the coils by hand (remove screws if present), then use your socket wrench to unscrew the spark plugs until they come out of the cylinder head. Take the new spark plugs and insert them into the cylinder head, connect the respective power terminals, and reinstall the soundproofing panel. Start the A-Class engine and check if everything is working.

Updated on 18 March 2026 by ScegliAuto

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