Is VI the Character for China VI Emission Standard?

[VonIsabella]

VI is the character for China VI emission standard, which is a Roman numeral, with I–1, II-2, III-3, IV-4, V-5, VI-6. Below is a detailed introduction to the emission standards:1. Since 2001, China has implemented the China Phase I emission standard by referencing European emission standards, followed by China II, China III, China IV, and China V, with each phase imposing stricter emission requirements than the previous one. According to the normal implementation schedule, the China VI standard is divided into two phases: starting from July 1, 2020, all light-duty vehicles sold and registered must comply with the China VI standard 6a limit requirements; starting from July 1, 2023, all light-duty vehicles sold and registered must comply with the China VI standard 6b limit requirements.2. Compared to China V, the China VI emission standard is more stringent in terms of testing standards and pollutant emissions. The test cycle has been changed from NEDC to WLTC standards, with the addition of real-world driving emission tests. The pollutant limits are stricter, with China VI being 40%-50% more stringent than China V. The CO and HC limits are one-third stricter than China V. The standard introduces a 48-hour evaporation emission test and a refueling process VOCs emission test, raising the evaporation emission control level to over 90%, and introduces strict On-Board Diagnostics (OBD) control requirements similar to those in the U.S.

[KaiMarie]

When it comes to automotive emission standards, I have some insights. VI is indeed the Roman numeral for 6, often used as the designation for the sixth stage in emission standards. China's National VI standard, officially called China VI, is designed with reference to Europe's Euro VI, aiming to make vehicle exhaust emissions cleaner. However, in practice, domestic car manufacturers or dealers don’t typically mark "VI" directly on vehicles; instead, they use the Chinese characters "国六" (National VI). Imported models might carry the Euro VI label. The National VI standard is further divided into two phases, A and B, with B being more stringent, setting limits on nitrogen oxides and other pollutants for both gasoline and diesel vehicles. To confirm if a vehicle meets National VI, don’t just look for the "VI" symbol—it’s best to check the vehicle’s nameplate, environmental label, or manual, where "National VI" is clearly stated. Understanding these standards can help avoid purchasing vehicles with outdated emission levels when choosing a car.

[VonNora]

Simply put, the VI character represents 6, commonly referring to the sixth stage standard in automotive emissions. China's National 6 is a similar concept, but domestically it's directly called 'Guo Liu' (National 6), while VI is more often the abbreviation for Europe's Euro VI. Don't rely on characters to check emissions; official documents are more accurate.

[StRebecca]

I noticed that emission standards are quite important. China's National VI standard is formulated with reference to Euro VI, where the character 'VI' can indirectly represent it. On actual vehicle labels, Chinese cars display 'National VI,' while European vehicles use 'VI.' Choosing a National VI-compliant car can make it more environmentally friendly and durable. By the way, after the implementation of National VI, urban traffic restriction policies often target older emission-standard vehicles. Verify this clearly before buying a car to protect the environment and save money.