A Certificate of Origin (C/O) is an official document stating where the vehicle was manufactured. Customs authorities use it to decide which tariff rates and trade agreements apply to your import.
Why it matters: many countries offer preferential tariffs for certain origins. With a valid C/O, such as the ASEAN-China Form E or a GSP Form A, you may pay reduced or zero duty. Without it, you typically pay the standard, higher rate.
The certificate must match the vehicle exactly: VIN, make, model and invoice details. It is usually issued by the China Council for the Promotion of International Trade (CCPIT) or customs authorities.
Practical tips: request the C/O before shipment, because adding it later is slow; check that your country's customs accepts the specific C/O format; and confirm with your broker whether your vehicle category qualifies for preferential rates. This single document can save you thousands in duty.