In which year did the China 4 standard begin?

[DeAubrey]

China 4 emission standard began in 2011 and lasted until 2018 when the China 5 standard was implemented. Therefore, vehicles produced between 2011 and 2017 comply with the China 4 standard. Here are some related details: 1. The China 4 standard requires a reduction of approximately 50% in various pollutant emissions compared to the China 3 standard. 2. With the arrival of the China 6 standard, vehicles meeting the China 3 emission standard are now facing scrapping. 3. The frequent updates to emission standards are due to the increasing number of vehicles on the road, which has led to a growing environmental impact from vehicle exhaust. Car exhaust contains harmful gases such as carbon monoxide and hydrocarbons, and the emission standards set limits on the release of these gases. 4. China's emission standards are primarily based on European Union standards, with some adaptive modifications. 5. Currently, China is in a transitional phase between China 5 and China 6 standards. Many automakers have already launched models that meet the China 6 standard, while models meeting the China 5 standard are being cleared out with significant discounts.

[Lucian]

The China IV emission standards were officially implemented nationwide on January 1, 2011. I remember that was exactly when I bought a new car, and many friends were discussing this topic. China IV mainly targeted new vehicles, reducing pollutant emissions such as nitrogen oxides and particulate matter, making driving more environmentally friendly. Back then, Beijing had already piloted the standards in 2008 to welcome the Olympics and improve urban air quality. These standards drove advancements in automotive technology, like upgrades to catalytic converters, and also impacted the used car market, causing older models to depreciate faster. A decade later, China V and China VI followed, but China IV truly marked the beginning of a new era of eco-friendly driving. Looking back now, it played a significant role in reducing smog. Every time I drive under clear blue skies, I recall the changes in 2011—though China IV is long past, its impact continues.

[LiamAnn]

The National IV emission standards were fully implemented across China in 2011, marking a significant milestone. As someone who has long been concerned about environmental protection, I find this particularly noteworthy. The National IV standards required vehicles to reduce pollutant emissions, leading to cleaner urban air and notably lower PM2.5 levels. Looking back, the increased frequency of clear blue skies post-2011 can be partly attributed to these standards. Beijing took the lead by adopting them ahead of schedule in 2008, demonstrating that environmental policies can outpace others. The National IV standards also spurred industry-wide upgrades, with automakers actively developing low-emission technologies. The subsequent introduction of National V and VI standards further elevated environmental protection efforts. I believe this wasn't just about timing—it also raised public awareness about eco-friendly vehicle maintenance, such as regular exhaust system checks to minimize pollution. In the long run, 2011 served as a turning point that advanced sustainable transportation development.

[OHolden]

The China 4 emission standard was implemented nationwide starting from January 1, 2011. As a car enthusiast, I paid attention to its market impact: it made new cars cleaner but accelerated the depreciation of older vehicles. For example, after China 4 took effect, used car prices dropped significantly because many regions restricted licensing for lower-standard vehicles. Beijing had already piloted it in 2008, preparing early for the Olympics. This standard not only reduced emissions but also drove technological upgrades, such as better engine designs that improved fuel efficiency for daily driving. Subsequent China 5 and China 6 standards followed, proving 2011 laid the foundation for China's auto industry to go green. Simply put, those who bought China 4-compliant cars back then found them worthwhile—you can still spot them on the roads today.