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Replacing the Spark Plugs on the Smart Roadster

Model: Smart Smart Roadster, 452 - Years: 2003, 2004, 2005
Part: Spark plugs

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Video tutorial

Today, we will see in this video tutorial how to remove and replace the engine spark plugs of the Smart Roadster, following the instructions below. First, open the rear engine cover and remove the metal shield; then connect the connectors of the spark plugs, using a socket wrench with an extension to unscrew and remove them, as shown in the video.

At this point, replace the spark plugs with new ones (a total of six), ensuring they have the same thermal rating and thread pitch; screw in the spark plugs by hand and then tighten with a wrench!


Updated on 15 May 2026 by ScegliAuto


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by ScegliAuto

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