Automobile fuel tank digital display

The utility model relates to an automobile fuel tank digital display, which comprises a control circuit, a mechanical driving portion mounted in a fuel tank and a digital display mounted in a driving cab. The mechanical driving portion comprises a horizontal fixed plate, an interlocking rod capable of rotating freely and a fixed resistor rod are vertically mounted on the fixed plate, an electromagnet is further fixed on the fixed plate, a connecting rod is arranged on the electromagnet, an interlocking ring corresponding to the connecting rod is fixed at the top end of the interlocking rod, a ring-shaped float capable of freely sliding up and down and rotating along with the interlocking rod is sleeved on the interlocking rod, a contact corresponding to the resistor rod is fixed on the float, and the control circuit comprises a regulating circuit and an A/D converting circuit. The automobile fuel tank digital display has the advantages that the automobile fuel tank digital display has simple structure, conven