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How to replace the spark plugs on a Mercedes B-Class?

Model: Mercedes Classe B W245, MK 1 - Years 2005-2011
Part: Spark plugs

To replace the spark plugs on a Mercedes B-Class, lift the car to gain access to the underside of the engine bay. From this point, disconnect all the coils connected to the spark plugs so that they can be removed from their housing. Lower the car and open the bonnet to access the front of the engine block. Here, you will find the spark plugs that can be removed using a socket wrench, allowing you to install the new replacement parts.

Updated on 2 July 2026 by ScegliAuto

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