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How to Replace the Transmission Oil of the Smart Fortwo CDI

Model: Smart Smart 450 - Years 1998-2007
Part: Transmission fluid

This guide outlines the steps to replace the transmission oil of the Smart Fortwo CDI. You can perform the oil replacement without lifting the vehicle; however, you will need to remove the rear bumper. First, remove the oil drain bolt from the transmission using a socket spanner, allowing the oil to drain into a container for about ten minutes, as shown in the video. Next, unscrew the transmission filler cap and pour in the appropriate oil for your gearbox in the correct quantity!

Updated on 13 August 2026 by ScegliAuto

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