How to distinguish between National 5 and National 6?

[VonAaliyah]

The National 5 emission standard is marked with "V", while the National 6 emission standard is marked with "Ⅵ", both using Roman numerals. Here is the relevant introduction about how to check the vehicle emission standard: 1. Method to check the vehicle emission standard: The vehicle model number is labeled on the vehicle's nameplate. Enter the fuzzy condition (vehicle model number) in the input box on the webpage of the Motor Vehicle Environmental Protection Website, then input the correct verification code, and click query to find the relevant information of the vehicle, including the emission standard. 2. How to find the vehicle nameplate: Generally, there is a nameplate under the co-driver's door. Relevant labels with the vehicle model number can be found in places such as the lower left corner of the front windshield, on the driver's door pillar, on the left side of the dashboard, in the engine compartment, on the adhesive side of the door, on the door frame base, inside the glove box, etc.