Drive system comprising at least one first motor, comprising at least one first H-bridge which is designed to operate the first motor, the first H-bridge comprising a first half-bridge with a first measuring resistor and a second half-bridge with a second measuring resistor, and comprising a control unit which is designed to evaluate the currents of the first measuring resistor and the second measuring resistor with regard to a thermal load of the first motor, comprising at least one second motor and at least one second H-bridge which is designed to operate the second motor, the second H-bridge comprising the second half-bridge with the second measuring resistor and a third half-bridge with a third measuring resistor, the control unit being further designed to evaluate the currents of the second measuring resistor and the third measuring resistor with regard to a thermal load of the second motor, characterised in that the control unit is further designed, during operation of the first motor, • to record the course of the current of a positive current wave across the second measuring resistor, • to record the course of the current of an immediately following negative current wave across the first measuring resistor, • to compare the two courses and, • in the event of a difference between the two courses as a result of the comparison, to detect a fault of the first motor, preferably to switch off the first motor. comprising at least one first motor, comprising at least one first H-bridge which is designed to operate the first motor, the first H-bridge comprising a first half-bridge with a first measuring resistor and a second half-bridge with a second measuring resistor, and comprising a control unit which is designed to evaluate the currents of the first measuring resistor and the second measuring resistor with regard to a thermal load of the first motor, comprising at least one second motor and at least one second H-bridge which is designed to operate the second motor, the second H-bridge comprising the second half-bridge with the second measuring resistor and a third half-bridge with a third measuring resistor, the control unit being further designed to evaluate the currents of the second measuring resistor and the third measuring resistor with regard to a thermal load of the second motor, characterised in that the control unit is further designed, during operation of the first motor, • to record the course of the current of a positive current wave across the second measuring resistor, • to record the course of the current of an immediately following negative current wave across the first measuring resistor, • to compare the two courses and, • in the event of a difference between the two courses as a result of the comparison, to detect a fault of the first motor, preferably to switch off the first motor. • to record the course of the current of a positive current wave across the second measuring resistor, • to record the course of the current of an immediately following negative current wave across the first measuring resistor, • to compare the two courses and, • in the event of a difference between the two courses as a result of the comparison, to detect a fault of the first motor, preferably to switch off the first motor.