How to Check a Car's Emission Standard (National Standard)

1 Answers
EzraRose
07/24/25 11:02pm
Methods to determine a car's emission standard are as follows: 1. Check the back of the vehicle's environmental protection compliance label; 2. Estimate the emission standard based on the car's manufacturing year; 3. Bring the vehicle registration certificate to the local DMV for inquiry; 4. The emission standard is usually stated on the first page of the vehicle certification document. Automotive emission standards regulate the permissible levels of harmful gases emitted from vehicles, including carbon monoxide, hydrocarbons, nitrogen oxides, particulate matter, and soot. These standards aim to prevent environmental pollution caused by exhaust emissions from compression-ignition and gas-fueled spark-ignition engines, protect the ecological environment, and safeguard human health.
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