What is the emission standard for China 6 vehicles?
2 Answers
China 6 emission standard, also known as the National Sixth Stage Motor Vehicle Pollutant Emission Standard, is established to implement the "Environmental Protection Law of the People's Republic of China" and the "Air Pollution Prevention and Control Law of the People's Republic of China", aiming to control motor vehicle pollutant emissions and improve ambient air quality. The China 6 emission standard is as follows: 1. Introduction: The National Sixth Stage Motor Vehicle Pollutant Emission Standard is an upgraded version of the current China 5 emission standard, imposing stricter limits on CO (carbon monoxide), THC (total hydrocarbons), NMHC (non-methane hydrocarbons), and NOX (nitrogen oxides). 2. Stricter than China 5: The emission limits for PM (particulate matter mass) are more stringent compared to the China 5 standard, and new regulations on PN (particulate matter number) emissions have been added. The implementation dates are July 1, 2019 (for heavy-duty diesel vehicles) and July 1, 2020 (for light-duty vehicles). 3. Implementation Time: China will implement the latest exhaust emission standard, known as "China 6", starting from 2017. This standard is equivalent to the world's strictest environmental standard "Euro 6" officially implemented in Europe in 2015. It will significantly reduce pollutants such as nitrogen oxides (NOX) and particulate matter (PM) compared to the current "China 4" standard.
Recently, I've been following this topic. The China VI emission standard is the latest environmental requirement for vehicles in China, much stricter than China V. From my car-buying experience, I learned it's divided into two phases: China 6a and China 6b. Phase 6a became mandatory in 2020, while the more stringent 6b phase started rolling out in 2023. It significantly reduces pollutants – for example, gasoline cars now have CO emission limits lowered to 500 mg/km and NOx below 30 mg/km, while diesel vehicles face stricter particulate matter controls. The new regulations require manufacturers to install particulate filters and advanced catalytic converters to ensure cleaner exhaust. In daily driving, I've noticed China VI-compliant vehicles contribute noticeably less to air pollution, with reduced urban smog. These standards not only protect the environment but also benefit public health, driving automotive innovation toward greener transportation trends. I recommend prioritizing China VI-compliant vehicles when purchasing – they're fuel-efficient and eco-friendly.
