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Can a China IV Vehicle Be Upgraded to China V?

1 Answers

LeClaire

07/30/25 12:57am

China IV vehicles cannot be upgraded to China V standards because the vehicle identification number (VIN) and the vehicle's registration with the environmental protection department cannot be altered in China. Additionally, the engine's design has already determined its emission standard. Even if parts of a non-compliant vehicle are replaced and its data is recalibrated to technically meet emission standards, the vehicle will still be recorded as non-compliant in the archives of the environmental protection department and the vehicle management office. The China V emission standard requires enhanced inspection of key emission control components, improved production conformity inspection procedures, and introduces new, more practical procedures for environmental sampling and compliance determination of mass-produced vehicles. Compared to China IV, the China V standard tightens the OBD limits and expands the monitoring items and functions of the OBD system.

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