A level sensor (20) for a motor vehicle that comprises a housing (1), a rotor (2) that is rotatably mounted on the housing (1), a circuit board (3) that is enclosed by the housing (1) and contains at least a single stator as well as a connector (4). The level sensor (20) should be improved in such a way that the rotor (2) is easy to mount on the housing (1) and that there is practically no play so that a relative position of the stator as compared to a rotor structure (9) is largely maintained. Overall, the sensor should also be inexpensive to manufacture. This is achieved by the circumstance that the housing (1) exhibits a cylinder (6) with a circular cross-section that is mounted on the outside, that the rotor (2) is made of plastic with the exception of the rotor structure (9) and that the rotor (2) is guided within the cylinder (6) and interlocks with the latter.