This chapter proposes a finite‑time, energy‑saving robust control framework for active suspension systems that explicitly accounts for coupling and disturbance effects. By introducing dedicated coupling and disturbance effect indicators, the proposed method distinguishes between beneficial and detrimental influences and selectively exploits or suppresses them using a second‑order sliding mode control strategy. Leveraging a bioinspired nonlinear reference model, advantageous nonlinear stiffness and damping characteristics are incorporated to further enhance energy efficiency. As a result, the controller fully utilizes favorable coupling and disturbance effects to achieve improved performance, validated with benchmark experimental results.