How to Determine a Vehicle's Emission Standard Level?

2 Answers
LaJune
07/24/25 5:01pm
The methods to check a vehicle's emission standard level are: 1. Examine the back of the car's environmental protection compliance label; 2. Check the initial page number of the vehicle conformity certificate, which is indicated by Roman numerals; 3. Estimate the emission standard based on the vehicle's manufacturing year; 4. Bring the original or copy of the vehicle registration certificate to the local DMV for inquiry. Vehicle emission standards refer to the regulations limiting harmful gases emitted from vehicle exhaust, including carbon monoxide, hydrocarbons, nitrogen oxides, particulate matter, and soot. Emission standards include: China I, China II, China III, China IV, China V, and China VI.
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Brooke
08/11/25 9:25am
I remember when I wanted to check my car's emission standard (like China III or China V), the simplest method was to flip through the vehicle manual or the Certificate of Conformity, which usually clearly indicates the emission standard. The environmental label stuck on the upper right corner of the windshield also directly displays the national standard number on that small yellow tag, making it easy to identify at a glance. The car's manufacturing year can also serve as a reference: China III roughly covers 2007 to 2010, China IV from 2011 to 2016, and China V and later standards start from 2017. This emission information is crucial as it affects whether the car can pass the annual inspection and comply with certain cities' traffic restriction policies. I recommend checking it every time you buy a car or during maintenance to avoid unexpected troubles on the road and potential fines.
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