When was China IV emission standard implemented?

[PeytonRose]

Vehicles produced after 2011 comply with China IV emission standards. The China IV standard was implemented nationwide on July 1, 2010. Compared with China III, the China IV standard features upgraded exhaust after-treatment systems, reducing pollutant emissions by 50% to 60% compared to China III. Below are relevant details: 1. Emission standards: As global environmental pollution becomes increasingly severe, countries worldwide are implementing stricter emission standards, which significantly benefits environmental protection. 2. Exhaust treatment: Under stringent emission standards, automakers actively develop new technologies to reduce engine exhaust emissions.

[LucilleLee]

I'm an experienced driver, having driven from the era of gasoline cars to the current age where electric vehicles are everywhere. The implementation of the China IV emission standards was phased, with diesel vehicles taking the lead and being enforced nationwide in July 2011, while gasoline vehicles followed two years later, with strict enforcement starting in July 2013. This standard had a relatively long grace period, and in some remote areas, China III vehicles could still be purchased as late as 2014. Nowadays, China IV vehicles are much rarer on the road, and even in the used car market, they're hard to find, especially since environmental regulations have become stricter, and China VI-B has become the mainstream. A couple of years ago, China IV vehicles could still be transferred across cities, but now, regions like Beijing-Tianjin-Hebei and the Yangtze River Delta basically don't allow their registration anymore.

[MacAdriel]

When I accompanied my friend to buy a car, I specifically researched the emission policies. The document number for the China IV emission standard is GB18352.3-2005, and new cars started transitioning to it gradually from 2011. When buying a used car, pay special attention: vehicles manufactured before 2011 are mostly China III compliant, and the environmental label on the window is the most accurate indicator. Nowadays, China IV vehicles not only face difficulties in getting licensed but also struggle to pass the annual exhaust emission tests, with many areas directly restricting their use. Last year, my friend tried to dispose of his 2008 model old car but couldn't even get a trade-in subsidy. The dealer said China IV vehicles can only be bought at scrap metal prices now.

[MacLevi]

After reviewing the documents from the Ministry of Environmental Protection at that time, the implementation date of the National IV standard for gasoline vehicles was July 1, 2013, a full two years later than for diesel vehicles. This standard primarily added the OBD onboard diagnostic system and upgraded the three-way catalytic converter, reducing tailpipe pollutants by over 40% compared to National III. I remember automakers began their technical preparations three years in advance, with the Volkswagen EA888 engine specifically developed for National IV. Looking back now, it's quite interesting—diesel vehicles equipped with DPF particulate filters were heavily criticized back then, but now even gasoline engines in National VI vehicles are required to have them.