In which year did the China IV emission standard begin?

[LeColin]

The China IV emission standard began in 2011 and lasted until 2018 when the China V standard was implemented. Therefore, vehicles produced between 2011 and 2017 all comply with the China IV standard. The China IV standard requires emissions of various pollutants to be approximately 50% lower than those under the China III standard. As early as 2008, cities such as Beijing, Shenzhen, and Shanghai had already taken the lead in implementing the China IV standard. The implementation timeline for the China IV standard for specific vehicle types is as follows: The China IV standard for diesel vehicles over 3.5 tons, originally scheduled to take effect on January 1, 2010, was postponed for two years. Starting from January 1, 2012, diesel vehicles that did not meet the China IV standard requirements could not be sold or registered; new compression-ignition engines that did not meet the China IV standard requirements could not be sold or put into use. The China IV standard for diesel vehicles under 3.5 tons was implemented on July 1, 2013. Starting from January 1, 2011, all gas-fueled spark-ignition engines and vehicles that did not meet the China IV standard requirements could not be sold or registered.