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

Where is the Fuel Filter Located on the Smart ForFour?

Model: Smart Forfour MK 1, W454 - Years: 2004, 2005, 2006
Part: Diesel fuel filter

See other generations:
Video tutorial

In this video, we can see where the fuel filter is located on the Smart ForFour, useful in case you need to replace it, a very simple operation. As shown, the filter in question is positioned inside the engine compartment, specifically on the driver's side behind the air filter box. To access it, you will need to remove the airbox, and to disassemble it, simply disconnect both upper fuel pipes and unclip the metal fastening clip.

Ensure that the engine is completely cold to operate safely.


Updated on 29 September 2026 by ScegliAuto


Related tutorials

How to Replace the Fuel Pump in the Smart ForFour 454
How to Replace the Fuel Pump in the Smart ForFour 454
Smart Forfour (2004-2006 / MK 1, W454) To replace the fuel pump in the Smart ForFour, you need to work in the rear interior of the car: start by moving the front and rear seats forward (if…
Where is the Fuse Box on a Smart ForFour?
Where is the Fuse Box on a Smart ForFour?
Smart Forfour (2014-2021 / MK 2, W453) This video shows where the fuse box is located on the Smart ForFour and its corresponding diagram, which is useful for checking the status of fuses f…
How to Replace the Cabin Filter on a Smart Forfour
How to Replace the Cabin Filter on a Smart Forfour
Smart Forfour (2004-2006 / MK 1, W454) In this video tutorial, see how to replace the cabin filter on a Smart Forfour by following some simple steps: first, purchase a new pollen filter. N…

Other guides you may be interested in

How to Replace the Glow Plugs in the Fiat Ducato 2.3 Multijet?

Glow plugs, as the name suggests, raise the temperature of the engine in diesel vehicles to allow for easier starting. The manufacturer, in this case, Fiat for the Ducato 2.3 Multijet, specifies how often they should be replaced, and a warning light will illuminate when it's time. This work is carried out under the bonnet. First, remove the upper engine cover, then lift the coil and, using a socket wrench of the appropriate size, unscrew the glow plug to remove it from the base, followed by installing the new one.

Watch the video!


by ScegliAuto

More videos