What is the national emission standard for cars in 2011?
2 Answers
2011 cars comply with China IV emission standards. Vehicle emission standards are crucial for normal operation. According to relevant regulations, China IV requires approximately 50% reduction in pollutants from light-duty vehicles compared to China III, about 30% reduction for heavy-duty vehicles, and over 80% reduction in particulate matter emissions. This necessitates recalibration of engine electronic fuel injection systems and catalyst formulations with precious metal elements to achieve higher control precision. The 'China X' classification refers to national motor vehicle pollutant emission standards that limit carbon monoxide, hydrocarbons, nitrogen oxides, and particulate matter in exhaust gases. Higher numbers indicate stricter standards and relatively lower pollution levels from exhaust emissions.
I drove a 2011 sedan, which was brand new at the time, and it was generally compliant with the China IV emission standard. In 2011, environmental regulations had just become stricter. China started promoting the China IV standard around 2008, and by 2010, it had covered most vehicle models. My car's registration certificate and annual inspection stickers all indicated China IV. If you're looking at used cars now, vehicles from that year are mostly China IV compliant, but not all cars are the same—some imported or small-displacement models might differ. Checking is simple: just refer to the vehicle manual or scan the environmental sticker with your phone. China IV cars are much cleaner than the previous China III standard, with significantly fewer pollutants, but they still can't escape urban traffic restrictions—some areas in Beijing and Shanghai don't allow them in. Considering the current standard upgrades, it's best to maintain the engine and catalytic converter well to avoid premature scrapping.
