The Thailand Office of Insurance Commission (OIC) has called insurance companies to clarify how they are applying driving-behaviour levels in underwriting electric vehicle (EV) motor insurance after supervisory checks found many policies being renewed at driving-behaviour level 1, which carries no premium discount, even where the insured had no claims or was not at fault. The review follows Registrar Order No. 47/2566, which prescribes the policy form, wording and premium rate schedule for EV motor insurance and requires a named-driver structure for personal-use EVs, including additional discounts for good driving behaviour. Using Insurance Bureau System data, the OIC identified 13 insurers applying driving-behaviour levels in EV underwriting but observed that most renewals remained at level 1, prompting it to summon a company board or representative to explain its underwriting approach, obstacles, underwriting results to date and how it communicates discount entitlements. The OIC instructed insurers to comply strictly with the order, fully inform customers of potential premium discounts, obtain the data subject’s consent to check driving-behaviour information or accept customer-provided evidence, and keep documentation to support their processes in case of complaints or disputes. The OIC urged firms to act quickly to prevent policyholders losing benefits and indicated it will take decisive action where insurers fail to comply with applicable laws or regulatory requirements.