A method for detecting angle measuring errors in an angular-resolution radar sensor for motor vehicles. For stationary radar targets, in each instance, the radial velocity and at least one locating angle are measured, and with the aid of the measured locating angle, an expected value of the radial velocity is calculated and compared to the measured value. Measurements of the radial velocities and the locating angles for one or more stationary targets are taken. For each of these targets, an individual indicator value is calculated, which indicates the difference of the measured radial velocity from the expected radial velocity. The individual indicator values obtained are subjected to angle-dependent scaling to compensate for the angular dependence of distortive angle errors. An indicator of the angle measuring error is calculated from the scaled, individual indicator values.