Drive system comprising at least one first motor (M1), comprising at least one first H-bridge which is designed to operate the first motor (M1), the first H-bridge comprising a first half-bridge with a first measuring resistor (R1) and a second half-bridge with a second measuring resistor (R2), and comprising a control unit which is designed to evaluate the currents of the first measuring resistor (R1) and the second measuring resistor (R2) with regard to a thermal load of the first motor (M1), comprising at least one second motor (M2) and at least one second H-bridge which is designed to operate the second motor (M2), the second H-bridge comprising the second half-bridge with the second measuring resistor (R2) and a third half-bridge with a third measuring resistor (R3), the control unit being further designed to evaluate the currents of the second measuring resistor (R2) and the third measuring resistor (R3) with regard to a thermal load of the second motor (M2), characterised in that the control unit is further designed, during operation of the first motor (M1), • to record the course of the current of a positive current wave across the second measuring resistor (R2), • to record the course of the current of an immediately following negative current wave across the first measuring resistor (R1), • 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 (M1), preferably to switch off the first motor (M1). comprising at least one first motor (M1), comprising at least one first H-bridge which is designed to operate the first motor (M1), the first H-bridge comprising a first half-bridge with a first measuring resistor (R1) and a second half-bridge with a second measuring resistor (R2), and comprising a control unit which is designed to evaluate the currents of the first measuring resistor (R1) and the second measuring resistor (R2) with regard to a thermal load of the first motor (M1), comprising at least one second motor (M2) and at least one second H-bridge which is designed to operate the second motor (M2), the second H-bridge comprising the second half-bridge with the second measuring resistor (R2) and a third half-bridge with a third measuring resistor (R3), the control unit being further designed to evaluate the currents of the second measuring resistor (R2) and the third measuring resistor (R3) with regard to a thermal load of the second motor (M2), characterised in that the control unit is further designed, during operation of the first motor (M1), • to record the course of the current of a positive current wave across the second measuring resistor (R2), • to record the course of the current of an immediately following negative current wave across the first measuring resistor (R1), • 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 (M1), preferably to switch off the first motor (M1). • to record the course of the current of a positive current wave across the second measuring resistor (R2), • to record the course of the current of an immediately following negative current wave across the first measuring resistor (R1), • 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 (M1), preferably to switch off the first motor (M1). <EOS>