What are the differences between Tuano National 5 and National 6?

[StAshley]

Tuano National 5 and National 6 differ in emission standards, principles, and their impact on vehicle registration. The specific differences are as follows: Different emission standards: The emission standards for National 6 are more than 30% stricter than those for National 5. Excluding the influence of operating conditions and testing, gasoline vehicles reduce carbon monoxide emissions by 50%, total hydrocarbons and non-methane hydrocarbons emissions by 50%, and nitrogen oxide emissions by 42%. Different principles: During the National 5 phase, diesel and gasoline vehicles had different emission standards. However, National 6 adopts a fuel-neutral principle, meaning the emission limits are the same regardless of the fuel type used. Different impacts on vehicle registration: After the formal implementation of the National 6 standard, the main impacts will be on the production, import, sale, and registration of new vehicles. Existing National 5 new vehicles will no longer be allowed to be registered. However, previously registered National 5 vehicles can continue to be used, will not affect normal annual inspections, and can be traded as used cars normally.