<p>This paper introduces a novel design of a magnetic geared permanent magnet motor employing an iron pieces rotor (IPR-MGPM). The use of an iron pieces rotor results in a decrease in the weight of the machine. Furthermore, permanent magnets (PMs) are located in a stationary part, distanced from the coils which are the main source of the heat. This arrangement effectively mitigates the demagnetization risk. In order to improve the electromagnetic performance of the initial design, a two-step optimization procedure is implemented. Initially, optimization parameters have been selected and prioritized based on their effect on output responses using Taguchi method. After that, utilizing sensitivity analysis, optimum values of the optimization parameters are obtained. The performance characteristics of the optimum model are comprehensively investigated and compared with the initial design through the finite element method (FEM). Additionally, the tolerance of the optimal model against the demagnetization phenomenon caused by high phase current is evaluated. FEM results demonstrate the efficacy of the optimization procedure.</p>