When did the National IV emission standard start to be implemented?
2 Answers
The National IV standard was implemented nationwide on July 1, 2010. Compared to National III, National IV upgraded the post-processing emission system, reducing pollutant emissions by 50% to 60% compared to National III. Below are the requirements for National IV vehicles: 1. Light-duty vehicles refer to M1, M2, and N1 category vehicles with a maximum total mass not exceeding 3.5 tons. 2. M1 category vehicles: Vehicles with at least four wheels, or three wheels with a manufacturer-specified maximum total mass exceeding 1 ton, and with no more than 8 passenger seats in addition to the driver's seat. 3. M2 category vehicles: Vehicles with at least four wheels, or three wheels with a manufacturer-specified maximum total mass exceeding 1 ton, with more than 8 passenger seats in addition to the driver's seat, and a manufacturer-specified maximum total mass not exceeding 5 tons.
As someone who has long been concerned about environmental policies, I clearly remember that the China IV emission standards were implemented in phases. On July 1, 2011, they were first enforced for light-duty vehicles like passenger cars, when automakers began installing devices such as catalytic converters in new vehicles. It wasn't until July 1, 2013, that heavy-duty vehicles like trucks were fully covered, given the greater complexity of modifying their engines. At that time, Beijing was suffering from severe smog, and after the policy was introduced, air quality did improve somewhat, also prompting gas stations to upgrade their fuel quality. Looking back now, China IV was like a watershed moment for automotive environmental protection, making the subsequent rollout of China V and China VI standards a natural progression.
