Where is the fuel cut of switch in a 2003 ford fiesta 1.4 diesel?

There isn't a readily accessible "fuel cut-off switch" in the way some larger vehicles might have one for emergency situations. Ford Fiestas, especially from that era, don't typically include this feature for everyday use. To stop the fuel supply, you'd need to either turn off the ignition or potentially disconnect the fuel pump relay (which requires some mechanical knowledge and isn't a standard user-accessible switch).