This document summarizes simulation work done to optimize the design of a power liftgate subsystem for an SUV. The optimization aimed to reduce weight while meeting structural requirements. Topology optimization of the inner panel identified critical areas for reinforcement. Gauge optimization of reinforcements and plates reduced weight by 1.5 kg compared to the baseline, while still satisfying requirements for both manual and power liftgate loading conditions. The optimized design merged two reinforcements into one component, saving on manufacturing costs.