On February 20, 2021, the national compulsory standard “Fuel consumption limits for passenger cars” (GB19578-2021), which developed by Ministry of Industry and Information Technology of China, was released after getting the approval of State Administration for Market Regulation and Standardization Administration. The standard will come into force on July 1, 2021, and it’s a revised version of GB 19578-2014.
The standard applies to M1 vehicles which are fueled by gasoline or diesel oil and with a gross weight less than 3500kg, it does not apply to vehicles that use only gas or alcohol ether fuel.
The test condition for traditional energy passenger cars and plug-in hybrid passenger cars will be changed from NEDC to WLTC by 2025, and this transformation will affect the overall fuel consumption of vehicles. The loading method will change from inertial mass loading method to continuous loading method.
- Fuel consumption limit for vehicles which equipped with a manual transmission and up to 3 rows of seats.
- Fuel consumption limit for other vehicles.
- The reference value of CO2 emissions corresponding to the limit value.
Consistency of production (COP)
- The fuel consumption of gasoline, diesel and dual-fuel vehicles should meet the production consistency which required by GB/T 19233.
- The production consistency test for other vehicles should be carried out based on the statistical methods and the decision rules for qualified quantity which specified in GB/T 19233.
Modifications and certification extensions
If the modification does not affect the fuel consumption of modified model, the original model certification will also apply to the modified model.
Evaluation system adjustment
Another major adjustment for the revised national standard is that the evaluation system for vehicle fuel consumption limits changes from multistep evaluation according to the classification of vehicle weight to liner evaluation based on vehicle weight.
For the original text of the above contents, please refer to the following URL (in simplified Chinese).