What does the China V vehicle emission standard mean?

[Louis]

It refers to China VI, which is the China 6 emission standard. Below is a detailed introduction to the China 6 emission standard: 1. Implementation timeline: Starting from 2019, various cities and regions across China gradually began implementing the China 6 standard, known as the most stringent emission standard in history. The initial China 6 standard implemented was China 6a, which was not very strict, while China 6b represents the true China 6 standard. China 6a served as a transitional standard from China 5 to China 6, with China 6b expected to be officially implemented in 2023. 2. Differences between China 6 and China 5 emission standards: In the China 6b phase, most indicators are 50% stricter than China 5 standards. According to estimates, under the China 6 standard, light gasoline vehicles will see approximately 50% reductions in carbon monoxide, hydrocarbons, non-methane total hydrocarbons, and nitrogen oxide emissions compared to China 5, with particulate matter emissions decreasing by about 40%. For heavy-duty diesel vehicles, nitrogen oxides and particulate matter will be reduced by over 60% compared to China 5. Considering that vehicle exhaust accounts for 20%~40% of air pollution in first-tier cities, implementing China 6 can bring a noticeable improvement of over 10% in urban air quality.

[DelSadie]

As an ordinary car owner, I'd say the China V emission standard is our country's fifth set of regulations for vehicle exhaust pipes. When I used to drive a China III vehicle into the city, it was always subject to traffic restrictions, but after switching to a China V model, things got much better. It mainly controls those invisible pollutants - for example, carbon monoxide in exhaust must be one-third less than China IV vehicles, and nitrogen oxides must be halved. The most noticeable difference I've experienced driving this car for two years is that it passes emission tests more easily during annual inspections, and I can now access all those green parking lots in the city. Although I had to spend a few thousand yuan extra when buying it to upgrade the catalytic converter, it's worth it knowing my child breathes less PM2.5 and smog. Friends buying used cars now should note that vehicles below China V standard face difficulties in ownership transfer.

[VanArianna]

The other day I was chatting with my buddy who's into car modifications about the China V emission standard, which is essentially the fifth-generation emission threshold. The government categorizes pollutants into four types: hydrocarbons, nitrogen oxides, etc., all of which must meet the standards. Nowadays, cars generally need to be equipped with direct fuel injection technology. For example, my hot hatch has a particulate filter specifically designed to capture black smoke from the exhaust. The funniest part was when I went for the vehicle inspection last time—the inspector stuck a tube into the exhaust pipe, and the computer immediately displayed a table of pollutant values. Even a 0.1% excess wasn’t allowed. But I think this standard is genuinely good. The street near my home used to be filled with diesel cars belching black smoke, but now China V-compliant vehicles only emit white vapor.