A sensor system for a vehicle includes: at least one sensor unit; and one evaluation and control unit transmitting a synchronization signal via a communication connection to the sensor unit. The sensor unit transmits a sensor signal representing the measured variable via the communication connection to the evaluation and control unit. The evaluation and control unit ascertains an instantaneous signal quality of the received sensor signal and transmits a piece of information about the ascertained instantaneous signal quality to the sensor unit. The sensor unit predefines a modulation amplitude for the transmission of the sensor signal as a function of the ascertained instantaneous signal quality.