Is National 5 or National 6 Better for Cars?
1 Answers
National 6 standards are superior. Here are the relevant details: 1. Difference: The emission standards for National 6 are over 30% stricter than those for National 5. Excluding the influence of operating conditions and testing, gasoline vehicles' carbon monoxide emissions are reduced by 50%, total hydrocarbons and non-methane total hydrocarbons emissions decrease by 50%, and nitrogen oxide emissions also drop by 42%. 2. National 5: The National Fifth Stage Motor Vehicle Pollutant Emission Standard, abbreviated as 'National 5 Standard,' has an emission control level equivalent to the European Union's currently implemented Stage 5 emission standard.