A method for measuring a change in distance between a stationary initial point and a largely stationary object with a FMCW radar apparatus, which emits frequency-modulated, continuous electromagnetic microwaves as an emitting signal as well as receives and evaluates them as an echo signal, comprising the steps of - sending an emitting signal from said initial point in the direction of said object such that said emitting signal is reflected by said object, - receiving an echo signal, which is generated by reflection of said emitting signal at said object, - mixing of said emitting signal with said echo signal in a mixer for generating a mixed signal, - evaluating said mixed signal by determining a temporal change in the mixed signal phase, i.e. the frequency of said mixed signal, in order to determine the distance between said initial point and said largely stationary object based on said temporal change in the phase, characterized by - determining a frequency modulation-superimposed frequency drift of said emitting and said echo signal, device-specific for said FMCW radar, as well as a calculative propagation time error resulting therefrom, wherein for determining said device-specific frequency drift an intermediate frequency is formed by mixing a reference signal frequency with a nominal center frequency of said emitting and said echo signal of said radar and subsequent low-pass filtering, wherein a time-independent part of said mixed signal phase is evaluated considering a propagation time of said emitting and said echo signal between initial point and object and the change in the distance between said initial point and said object is determined based on a change in said time-independent part of said phase, and said calculative propagation time error caused by said frequency drift is considered in the evaluation of said time-independent part of said mixed signal phase. - sending an emitting signal from said initial point in the direction of said object such that said emitting signal is reflected by said object, - receiving an echo signal, which is generated by reflection of said emitting signal at said object, - mixing of said emitting signal with said echo signal in a mixer for generating a mixed signal, - evaluating said mixed signal by determining a temporal change in the mixed signal phase, i.e. the frequency of said mixed signal, in order to determine the distance between said initial point and said largely stationary object based on said temporal change in the phase, characterized by - determining a frequency modulation-superimposed frequency drift of said emitting and said echo signal, device-specific for said FMCW radar, as well as a calculative propagation time error resulting therefrom, wherein for determining said device-specific frequency drift an intermediate frequency is formed by mixing a reference signal frequency with a nominal center frequency of said emitting and said echo signal of said radar and subsequent low-pass filtering, wherein a time-independent part of said mixed signal phase is evaluated considering a propagation time of said emitting and said echo signal between initial point and object and the change in the distance between said initial point and said object is determined based on a change in said time-independent part of said phase, and said calculative propagation time error caused by said frequency drift is considered in the evaluation of said time-independent part of said mixed signal phase.