Thailand's auto industry is pushing for clearer government guidelines on the new three-tier EV excise tax structure designed to incentivize domestic manufacturing and local content. The EB Board recently approved differentiated rates (2% for promoted domestic plants, 8% for non-promoted, 10% for imports), but automakers and SME suppliers need urgent clarification on local-content thresholds, import volumes, and privileging to plan production and investment effectively. Delays in detailed implementation could stall industry investments.