A vehicular angular velocity sensor system executes abnormality detection of angular velocity sensors based on comparison between output states of corresponding angular velocity signals. The sensor system includes first low-pass filters and second low-pass filters for the two angular velocity sensors, respectively. Each of the first low-pass filter has a first cut-off frequency to remove components of a high frequency band unnecessary for vehicular control, from angular velocity signals. In contrast, each of the second low-pass filters has a second cut-off frequency that is lower than the first cut-off frequency of the first low-pass filter. Low-frequency-side angular velocity signals that have passed through the second low-pass filters are used for executing the abnormality detection.