Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Replacing the Spark Plugs on the Smart Roadster

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

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

Video tutorial

Related tutorials

How to Replace the Spark Plugs on a Smart Roadster?
How to Replace the Spark Plugs on a Smart Roadster?
Smart (2003-2005 / Roadster, 452) To replace the spark plugs on a Smart Roadster, open the rear hatch to access the engine located underneath. Disconnect the connectors attached to th…
Remove the Spark Plugs on a Smart Roadster
Remove the Spark Plugs on a Smart Roadster
Smart (1998-2007 / 450) Want to replace the spark plugs on your Smart Roadster? Here’s how to remove the spark plugs located in the engine compartment. Lift the rear bonnet …
How to Replace the Clutch Actuator on the Smart Roadster?
Smart (2003-2005 / Roadster, 452) You can replace the clutch actuator on the Smart Roadster by lifting the car to access the components underneath: once the vehicle is lifted, you can…

Other guides you may be interested in

How to Reset the Central Locking of the Volkswagen Golf 4?

If the central locking system of the Volkswagen Golf 4 is not working, it is likely necessary to reset the system: to do this, open the driver's door and detach the side panel of the dashboard next to the steering wheel. Under this panel, you will find the fuses, including the one for the central locking, which is indicated in the manual as number 14. To reset the system, remove this fuse from its housing, then reinsert it or replace it with a new one of the same amperage: this will reset the central locking system.

Watch the video!


by ScegliAuto

More videos