What is the difference between National V and National VI on cars?
2 Answers
The difference between National V and National VI: The National VI (VI) emission standard is 40%-50% stricter than National V (V). It is comparable to the U.S. standards and can be considered one of the most stringent emission standards globally. Additional knowledge: 1. Emission standards: These regulations specify the permissible levels of harmful gases in vehicle exhaust, including CO (carbon monoxide), HC+NOx (hydrocarbons and nitrogen oxides), and PM (particulate matter, soot). 2. National VI standard phases: The National VI emission standard is implemented in two phases, National VI a and National VI b, with National VI b being even stricter than National VI a.
Last time I changed cars, I specifically researched the difference between National V and National VI standards. Simply put, the National VI standard is much stricter, with fewer harmful substances in the exhaust. The most noticeable change is that the limits for particulate matter and nitrogen oxides have been cut by about half, meaning National VI vehicles emit only half the pollution of National V vehicles. Nowadays, National VI cars have an additional sensor in the exhaust pipe for real-time monitoring, and the engine tuning is smarter. If you're buying a used car, be careful—some big cities only allow National VI vehicles to be registered, and National V vehicles might not be transferable. In the long run, it's more reliable to choose a National VI car, so you won't have to worry if policies tighten up in a few years. There's not much difference in driving, except that National VI fuel is slightly more expensive, but it's worth it for the environment.
