What are China III and China IV Vehicles?
2 Answers
China III and China IV vehicles are motor vehicles that comply with China's automotive emission standards. The following are the key differences between China III and China IV: 1. China III refers to the third stage of China's automotive emission standards, which introduced upgrades and modifications to engines and exhaust systems to reduce pollutant emissions, including enhancements to vehicle self-diagnostic systems. 2. China IV represents the fourth stage of China's automotive emission standards, featuring further upgrades to the post-emission treatment systems compared to China III, with pollutant emission standards reduced by 50% to 60% relative to China III. 3. To stably meet the China III emission standards, vehicles must be equipped with technical measures that ensure pollutant emissions comply with China III standards, along with the use of fuel that meets Euro III standards.
My neighbor Lao Wang talked to me about this last week when he sold his China III pickup truck. China III and China IV refer to different phases of the national vehicle emission standards. The China III standard was implemented in 2007, and China IV was an upgraded version enforced in 2011. They have completely different limits on pollutant emissions from vehicle exhaust. For example, China IV vehicles are required to emit 30% less carbon monoxide than China III vehicles, with stricter controls on hydrocarbons and nitrogen oxides. In some cities in North China, China III vehicles are now banned from entering urban areas. For instance, that diesel truck spewing black smoke at the entrance of our neighborhood is a typical China III vehicle, which was fined three times last year. When buying a used car now, you must check the environmental label. Some older vehicles, even if modified for emissions, still can't meet the China IV standard.
