What is the Chinese equivalent of Euro II emission standards?

[GeorgeDella]

Euro II emission standards are equivalent to China's National II emission standards. Definition of National II standards: The so-called National II standards refer to China's second-phase vehicle emission standards. The National II emission standards are equivalent to Euro II emission standards, meaning the content of tailpipe pollutants is equivalent to that of Euro II. Differences between National II and Euro II: National II emission regulations have the same requirements as Euro II emission regulations, but the implementation time differs by 8 years, which also indicates that China's automotive technology is still relatively backward. Automobile exhaust components: The main pollutants emitted from automobile exhaust include hydrocarbons, nitrogen oxides, carbon monoxide, particulate matter, etc., which are primarily discharged through the vehicle's exhaust pipe.

[LeilaniLynn]

I often encounter friends asking about the equivalence of emission standards. Euro 2 roughly corresponds to China's National II emission standard, both being the second phase of regulations targeting early vehicle exhaust pollutant control. However, it's important to note this is only an approximate equivalence due to differences in testing methods—Europe used the NEDC test cycle, while China at that time followed its own driving cycle tests. Numerically, National II set a CO emission limit of 4g/km versus Euro 2's 2.2g/km, with both achieving similar pollutant control levels. Such old vehicles are rarely seen on roads nowadays. Most vintage car enthusiasts I know keep them in storage collections, especially since most cities now restrict even National III vehicles from driving.

[MiaMarie]

Speaking of emission standard comparisons, I've seen plenty of cars in my twenty years of running an auto repair shop. Euro II is basically equivalent to our old National II standard, both being outdated regulations implemented around the year 2000. Back then, vehicles typically just had a basic three-way catalytic converter installed, unlike today's China VI vehicles that also come with particulate filters. Many regular customers bring in European imported cars for repairs - when I see Euro II labeled on the nameplate, they're all registered as National II in our environmental protection system. But you should note that enforcement standards vary by city - for instance, Beijing imposed earlier driving restrictions on National II vehicles while smaller cities still allow them on the road. In short, always check local policies before buying a used European classic car.

[SanLorenzo]

I work in the environmental protection industry, and it's generally accurate to say that Euro II corresponds to China II. The limits for pollutants like hydrocarbons and nitrogen oxides are indeed very similar under both standards. However, the key difference lies in the testing methods: Europe uses low-temperature cold-start testing, while China used ambient temperature testing at that time. In practical use, China II vehicles running on 92-octane gasoline may emit more than Euro II vehicles running on 95-octane gasoline. Many of these non-compliant vehicles have now been phased out, with last week's data showing that China II and below vehicles account for only about 4% nationwide.