What are the differences between China IV and China V emission standards?

[LaParker]

Compared to China IV, the most significant difference of China V lies in its stricter emission requirements for heavy-duty vehicles. It has raised the standards for nitrogen oxides (NOX), the sum of hydrocarbons and nitrogen oxides (HCNOX), and particulate matter concentration (PM). Additionally, China V introduces new standards for particulate matter particle count (PN) and non-methane hydrocarbons (NMHC). Here are the relevant details: 1. Implementation timeline of China V: The China V emission standard was fully implemented nationwide starting from July 1, 2017. It reduces nitrogen oxide emissions by 25% compared to China IV and introduces stricter PM emission limits. 2. Methods to identify China IV and China V vehicles: The simplest and most direct method is to check the vehicle's environmental protection label, which clearly indicates the standard. For new vehicles, this information can be found on the factory certificate. Alternatively, you can visit the Motor Vehicle Environmental Protection Website and query by entering the vehicle's VIN number and the last 6 digits of the engine number.

[Grover]

As an average car owner, I believe the key difference between China IV and China V lies in the stringency of emission controls. Simply put, the China V standard is stricter than China IV, which affects daily vehicle performance: China V vehicles emit significantly fewer harmful substances like nitrogen oxides and particulate matter, contributing to cleaner urban air. When driving a China V car, I've noticed smoother engine operation, slightly better fuel efficiency, and potentially higher maintenance costs but greater reliability. Meanwhile, China IV vehicles face registration restrictions in high-emission zones – in my city, for instance, used China IV cars encounter licensing limitations, making me prefer China V when purchasing. Long-term, this helps reduce smog, and driving now feels more pleasant. Overall, the China V upgrade reflects environmental progress while delivering a more worry-free driving experience.