How to Identify Whether a Sedan is China 5 or China 6 Standard?

[LaGianna]

To determine whether a sedan meets the China 5 or China 6 emission standard, follow these steps: 1. For new cars, the simplest method is to check the vehicle's compliance certificate; 2. For older cars, look for the environmental label affixed to the upper right side of the front windshield. The China 5 emission standard is marked with a 'V', while the China 6 standard is marked with a 'Ⅵ'. The primary difference between China 6 and China 5 lies in the emission levels, with China 6 standards being significantly lower than China 5. Under China 5 standards, gasoline vehicles emit 1000 mg of carbon monoxide per kilometer, whereas China 6 standards reduce this to 700 mg per kilometer. Compared to China 5, the China 6 standard reduces nitrogen oxide emissions by 77%, particulate matter by 67%, introduces limits on particulate number, and imposes stricter requirements on emission control device durability and onboard diagnostic systems.

[AubreyRose]

As a long-time car owner, I think identifying whether a sedan meets China 5 or China 6 emission standards is quite straightforward. The most direct method is to check the environmental label affixed at the lower left corner of the windshield, which will indicate 'China V' or 'China VI'. The China 6 standard is stricter and divided into Phase A and Phase B, with Phase B being more advanced. If you've already purchased a car, check the sales invoice or the vehicle certification—these documents usually specify the emission level. For new cars, salespeople typically emphasize this point. When buying a used car, ask the seller to provide relevant documents to avoid purchasing a vehicle that doesn't comply with urban driving restrictions. China 6-compliant cars are not only more environmentally friendly with lower exhaust emissions but may also be exempt from driving restrictions in major cities. They tend to be more fuel-efficient and may require less maintenance in the long run. I remember paying special attention to choosing a China 6B-compliant car when I upgraded, as it helps reduce air pollution.

[DiHayden]

Having worked on cars for over a decade, I often help owners check emission standards. The best method is scanning the VIN (Vehicle Identification Number), usually found on the windshield or driver's side door edge. After entering it into a query website, the 17th digit reveals the emission level—for example, 1 or 2 indicates China V, 3 for China VI A, and 4 for China VI B. Domestic and imported vehicles differ significantly; post-2020 domestic cars are mostly China VI, while imports may comply later. Connecting an OBD tool to the vehicle's system also provides quick data. China VI vehicles are more durable with higher catalytic converter requirements, so material selection during repairs is crucial. I recommend regular maintenance checks on these components to extend the vehicle's lifespan.

[McMalia]

I always emphasize emissions when looking at cars to be environmentally conscious. China 5 and China 6 are national exhaust emission standards, with China 6 being stricter, effectively reducing PM2.5 and harmful gases. Identification is straightforward: new cars have an environmental label on the windshield clearly stating the level; for older cars, you can check the level by entering the license plate on the vehicle management office's website. When buying or renting, opting for a China 6 model benefits both others and yourself, as it reduces emissions and is slightly more fuel-efficient. Having driven a China 6 car for five years, I've noticed much cleaner air. I recommend everyone starts with small steps to protect our home.

[LeKayden]

Working at a car dealership, customers often ask how to check the emission standards. When purchasing a car, the salesperson must inform you, and the invoice and manual will clearly indicate 'China V' or 'China VI'. For second-hand transactions, check the environmental certificate provided by the original owner or the model page on online platforms for details. China VI cars are currently in high demand because they comply with the registration policies of major cities and have higher resale value; the price difference when selling can be several thousand yuan. I recommend prioritizing new China VI B cars when buying, as they are easier to resell and help avoid pitfalls.

[StPeter]

Understand the policy, I check the national emission implementation timeline before buying a car. China 6 standards are implemented in phases, with some regions starting in 2019 and nationwide China 6B rollout by 2023. Identification method: Use apps like Traffic Management 12123 to input license plate info; enforcement strictness varies by region—for example, Shenzhen restricted new China 5 cars as early as 2021. China 6 standards have significant emission reduction benefits, so considering this when selecting a car can avoid hassles. For instance, cross-city transfers may be limited to China 6-compliant vehicles—mastering this knowledge prevents regrets.