What is the emission standard for vehicles from 2007?
3 Answers
For vehicles from 2007, there are both National II and National III emission standards. 1. The National II standard was implemented nationwide from July 1, 2004. In preparation for the Olympics, Beijing implemented it ahead of schedule. Compared to National I, the National II standard further tightened emission requirements, reducing single-vehicle pollutant emissions by 30% for carbon monoxide and 55% for hydrocarbons and carbon oxides. 2. The National III standard was implemented nationwide from July 1, 2007, primarily applicable to light gasoline and diesel vehicles under 3.5 tons. Vehicles produced before this date adhered to the National II standard. To reduce pollutant emissions, National III vehicles underwent technical upgrades to the engine and exhaust system, including the addition of an onboard diagnostic system and improvements to the three-way catalytic converter. Compared to National II, National III reduces total pollutant emissions by 40%.
The old car I drove in 2007 met the China III emission standard. I remember all new cars were uniformly upgraded to this level at that time. Emission standards are mainly determined by the production date. The China III emission standard was mandatorily implemented nationwide starting from July 2007, so if your car was produced in the second half of 2007, it's basically China III. However, cars manufactured early in the year might still meet China II standards because the transition period wasn't fully completed. To confirm your car's emission standard, you need to check the information on the vehicle registration certificate or use some apps to look it up, which is quite convenient. As an ordinary driver with over a decade of experience, I find China III cars relatively hassle-free during annual inspections, but emissions tend to deteriorate over time, so regular maintenance is essential for stability. If you frequently drive in cities with traffic restrictions, paying attention to these details becomes even more important. In short, these standards affect both the driving experience and urban mobility convenience.
Having dealt with many similar cases, the 2007 vehicle emission standard was primarily China III, as this year marked the transition period from the old China II to the new China III standard. China III came into effect in July of that year, so most new cars from 2007 fall under this category. However, it's crucial to check the manufacturing date—if the vehicle was produced in the first half of the year, it might still be China II, as factories had a grace period. Emission standards directly impact whether a vehicle passes inspection and are tied to traffic restriction policies, especially for older cars with more severe exhaust issues. It's recommended that owners check the emission level stated on their vehicle registration certificate or license, rather than guessing. In daily driving, China III vehicles show decent fuel efficiency, but after over a decade of use, catalytic converters tend to degrade. Early maintenance is advised to prevent failing emission tests.
