What is the equivalent Chinese emission standard for Euro 3?
3 Answers
Euro 3 is equivalent to China's National 3 emission standard. Euro 3 is an automotive exhaust emission standard established by the European Union, while China's National 3 standard mainly applies to light gasoline and diesel vehicles under 3.5 tons. The Euro 3 standard requires commercial vehicles to limit hydrocarbons, carbon monoxide, nitrogen oxides, and particulate matter in exhaust emissions to 0.66%, 2.1%, 5%, and 0.1% respectively. European emission standards include: Euro 1, Euro 2, Euro 3, Euro 4, Euro 5, and Euro 6. Automotive emission standards refer to the regulations limiting harmful gases such as carbon monoxide, hydrocarbons, nitrogen oxides, particulate matter, and soot emitted from vehicle exhaust.
I've been driving for nearly twenty years, and the Euro III emission standard is roughly equivalent to our country's National III standard. My old car used to be Euro III compliant, and it always gave me trouble at the inspection station—failing emissions tests and getting penalty points. The mechanic said the catalytic converter was faulty. The upgrade from National III to National IV improved pollution control, reducing black smoke from vehicle exhaust and significantly improving urban air quality. Nowadays, when buying a car, people opt for National V or VI standards. Older cars are being phased out quickly, so I recommend checking and maintaining your car's emission system—it reduces pollution and saves fuel costs. Environmental protection starts at the source, and even driving my small car feels much smoother now.
When repairing cars, it's common to encounter emission faults in European vehicles. According to the mechanics' analysis, Euro 3 is equivalent to China 3 standards. Cars from that era have outdated emission systems, with high levels of nitrogen oxides in the exhaust, causing significant harm to the environment. If they fail the inspection, parts like oxygen sensors or exhaust pipes need replacement. Nowadays, with technological advancements, China 6 standards are stricter, and emission control is much better. Remind everyone to pay attention to emission indicators during maintenance, and don't wait until problems become severe to fix them. Environmental protection starts with daily driving. My advice is to practice more and waste less, and upgrade in time for older vehicles.
