When was the China IV emission standard implemented?

[JoelDella]

The China IV emission standard was implemented in 2011 and remained in effect until the introduction of the China V standard in 2018. Therefore, vehicles produced between 2011 and 2017 comply with the China IV standard. The China IV standard requires approximately 50% lower emissions of various pollutants compared to the China III standard. With the upcoming China VI standard, vehicles meeting the China III standard are now facing scrapping. Here is more information: 1. Different countries and regions adopt different emission standards based on their actual conditions. For example, the United States has U.S. standards, Europe has Euro standards (Euro IV, Euro V, etc.), and China has national standards (China IV, China V, etc.). 2. There are three main test cycles for passenger vehicle emissions: the EU's NEDC cycle, the U.S.'s FTP75 cycle, and Japan's JC08 cycle.

[LuciaDella]

I've done quite a bit of research, and the implementation of the China IV emission standards actually happened in several phases. As early as 2010, major cities like Beijing and Shanghai took the lead in implementing China IV for light-duty gasoline vehicles. By July 1, 2011, all new light-duty gasoline vehicles nationwide were required to meet this standard. For diesel vehicles, it was two years later, not until July 2013 that the standard was fully implemented. When this policy was first introduced, both automakers and car owners found it quite challenging, as they had to readjust production lines and phase out older vehicles. I remember there was even a scandal about urea fraud in diesel vehicles back then, precisely because the emission standards became stricter. However, looking back now, the China IV standards have indeed been effective in reducing air pollution.

[DiMiguel]

As a veteran driver with over 20 years of experience, I remember that China IV gasoline vehicles were fully implemented in 2011. The funniest thing was that the used car market was in chaos at that time, with China III vehicles being heavily discounted but still hard to sell. Later in 2013, even diesel vehicles started adopting China IV standards, and the addition of urea tanks became a topic truck drivers complained about for years. The biggest change after this policy was implemented was in new car designs, especially the need to redesign three-way catalytic converters. At that time, my Santana 2000 was stuck at China III standards, so I had to reluctantly replace it. Nowadays, the second-hand prices of China IV vehicles remain relatively stable, but special attention must be paid during maintenance to use specialized parts for components like fuel injectors.

[Roman]

When studying vehicle policies, I noticed that the China IV emission standards were implemented in phases. Light-duty gasoline vehicles were fully implemented nationwide on July 1, 2011, while diesel vehicles were rolled out in two batches: heavy-duty vehicles in July 2013, and light-duty diesel vehicles not until 2015. At that time, major automakers rushed to upgrade ECUs and install OBD systems, and repair shops had to recertify their technicians. The biggest headache was upgrading the inspection lines, with many old devices being scrapped directly. After implementation, PM2.5 emissions did drop by about 30%, but issues like oil dilution emerged, especially among owners in colder regions who frequently complained.