GB19578-2024
Fuel consumption limits for passenger cars
乘用车燃料消耗量限值
GB 19578-2024 is a current mandatory Chinese national standard for Fuel consumption limits for passenger cars. It appears in the Electronics compliance cluster with a testing methods focus and has an implementation date of Jan 1, 2026.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to M1 class vehicles (passenger cars) that are capable of using gasoline or diesel fuel, with a maximum design total mass not exceeding 3500 kg. It covers the type-approval application, fuel consumption measurement, limit determination, and production conformity for conventional, NOVC-HEVs, and OVC-HEVs. This standard is mandatory for all relevant manufacturers seeking type approval in China and explicitly excludes vehicles powered solely by gaseous or alcohol-ether fuels.
Technical requirements
This standard establishes the mandatory fuel consumption limits for passenger cars, replacing the previous 2021 version. A key update is the strict requirement that a vehicle model's type-approval value must not exceed the specified limits. The limits are calculated using mathematical formulas based on the vehicle's curb mass (CM) and are categorized by transmission type (manual vs. non-manual) and seat rows (less than three rows vs. three or more). For hybrid vehicles, the standard distinguishes between NOVC-HEVs and OVC-HEVs. For OVC-HEVs, the OVC-HEV converted fuel consumption is calculated using a simple conversion method and must comply with the corresponding limits. The standard also provides reference calculation methods for corresponding CO2 emission values. Additionally, the standard defines strict criteria for same-type evaluation (judging whether different configurations belong to the same type), covering engine characteristics, drivetrain configurations, and hybrid system architecture. Manufacturers must ensure that both the type-approval values and production conformity meet these tightened regulatory requirements.
Testing methods
Fuel consumption measurements must be conducted using the WLTC (Worldwide Harmonized Light Vehicles Test Cycle). Conventional and dual-fuel vehicles are tested according to GB/T 19233-2020, while hybrid vehicles are tested per GB/T 19753-2021. The testing evaluates comprehensive fuel consumption across low, medium, high, and extra-high-speed phases. Manufacturers must submit representative sample vehicles to designated testing institutions for these evaluations.
FAQs
What products are regulated under GB 19578-2024?
The standard applies to M1 class vehicles (passenger cars) that use gasoline or diesel and have a maximum design total mass not exceeding 3500 kg. It explicitly excludes vehicles powered solely by gaseous or alcohol-ether fuels.
Are there any major updates from the previous GB 19578-2021 version?
The 2024 revision introduces stricter requirements, including a mandate that type-approval values must not exceed the specified limits. It also updates the fuel consumption limit formulas, modifies production conformity requirements, and adds specific certification report templates for both NOVC-HEVs and OVC-HEVs.
How does GB 19578-2024 differ from international standards?
The standard aligns with international testing frameworks by adopting the WLTC (Worldwide Harmonized Light Vehicles Test Cycle) for fuel consumption measurement, similar to UN ECE regulations. However, the specific limit formulas and CO2 reference values are tailored for China's domestic automotive industry.
The summary above provides a high-level overview of GB 19578-2024. To ensure complete compliance for your passenger cars entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 19578-2024 today to access all detailed limit formulas, certification report templates, and testing procedures.
Applicability hints
- Type
- Management
- CCS
- T40
- ICS
- 43.020
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- National Technical Committee on Automobiles of Standardization Administration of China
Relationships
Replaces:GB 19578-2021