What is the difference between National IV and National V vehicle emission standards?
1 Answers
The differences between National IV and National V vehicle emission standards are: 1. Different nitrogen oxide (NOx) emission limits: The National IV standard allows 0.08 mg per cubic meter, while National V permits only 0.06 mg per cubic meter. 2. Different standard codes: National IV follows GB18352.32005, whereas National V complies with GB18352.52013. Methods to distinguish between National IV and National V vehicles include: 1. Checking the vehicle fuel consumption label; 2. Examining the vehicle identification plate; 3. Verifying the engine model; 4. Inspecting the environmental protection mark; 5. Accessing the official motor vehicle environmental protection website.