What is the emission standard for the 2003 Audi A6-2.8?
2 Answers
The 2003 Audi A6-2.8 meets the Euro IV emission standard, which is equivalent to China's National IV emission standard. Additional Information: 1. The Audi A6 is equipped with a DOHC turbocharged EA888 variable phase engine, paired with a 7-speed CVT automatic transmission or a 6-speed automatic transmission. It uses 97-octane unleaded gasoline and complies with the National IV emission standard. 2. The National IV emission standard refers to the fourth stage of China's motor vehicle pollutant emission standards. The main pollutants emitted by vehicles include HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), and PM (particulate matter). Through the application of technologies such as improved catalytic converter active layers, secondary air injection, and exhaust gas recirculation systems with cooling devices, the standard controls and reduces vehicle emissions to below specified levels.
Speaking of the 2003 Audi A6 2.8, I'm a true classic car enthusiast—it indeed meets the National I emission standard. This 2003 model had relatively lenient emission requirements at the time, with National I standards allowing higher pollutant emissions. Driving it in big cities today under current restrictions often leads to penalties. Back then, the 2.8L engine was powerful, delivering smooth acceleration, but maintenance requires attention—for instance, regularly changing spark plugs can slightly reduce exhaust emissions. I once drove a friend’s A6 of this model, and it frequently failed annual emission tests, with the green label clearly marked 'National I.' If buying a used one, I recommend verifying the emission level via the official VIN and considering upgrading the catalytic converter to improve compliance. Emission standards have evolved rapidly from National I to National VI—keeping old cars is about nostalgia, but avoid driving them into congested areas.
