What is the National Emission Standard for Vehicles in 2017?

[McFinley]

Vehicles in 2017 comply with the National V emission standard, which is the fifth stage of China's national standards for motor vehicle pollutant emissions. The National V standard imposes stricter limits on nitrogen oxides, hydrocarbons, carbon monoxide, and particulate matter emissions from vehicles. Its purpose is to reduce and prevent environmental pollution caused by vehicle exhaust, protect the ecological environment, and ensure human health. The requirements of the National V standard are: 1. The carbon monoxide emission per kilometer driven must not exceed 1000 milligrams; 2. The non-methane hydrocarbon emission per kilometer driven must not exceed 68 milligrams; 3. The nitrogen oxide emission per kilometer driven must not exceed 60 milligrams; 4. The fine particulate matter emission per kilometer driven must not exceed 4.5 milligrams.