Why would a digital speedometer all the sudden quit working on a citroen saxo vtr all others gages work just not speedometer?

A digital speedometer in a Citroen Saxo VTR may stop working due to a faulty speed sensor, which is responsible for relaying the vehicle's speed to the dashboard. Additionally, issues with the wiring or connectors associated with the speed sensor can lead to a loss of signal. It's also possible that there could be a problem with the instrument cluster itself or a blown fuse affecting the speedometer. Checking these components can help identify the cause of the malfunction.