Operating Method for a Vehicle

An operating method for a vehicle includes the steps of measurement of a filling level of a liquid, assignment of a measured filling level to a closest filling level threshold from a multiplicity of known filling level thresholds, wherein each filling level threshold represents a defined filling value, activation of at least one filling level threshold from the multiplicity of filling level thresholds by means of the measuring device, ascertainment of the frequention of an activation of a filling level threshold and/or a frequention of an assignment of a measured filling level to a closest filling level threshold, and determination of the filling level threshold which has a maximum frequention relative to a defined period of time. A realistic filling value is determined from which measuring errors which arise are eliminated.