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GB 19578-2024: Fuel consumption limits for passenger cars
GB 19578-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
CCS T 40
Replacing GB 19578-2021
Fuel Consumption Limits for Passenger Cars
ISSUED ON: NOVEMBER 28, 2024
IMPLEMENTED ON: JANUARY 1, 2026
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 Application of Type Approval ... 4
5 Determination of Fuel Consumption ... 5
6 Determination and Recording of Type Approval Values ... 5
7 Fuel Consumption Limits ... 5
8 Production Consistency ... 7
9 Same Type Determination ... 7
10 Implementation of the Standard ... 8
Appendix A (normative) Engine System Characteristics ... 9
Appendix B (normative) Fuel Consumption Type Approval Report / Type Approval
Application Report2) for Fuel Vehicles ... 16
Appendix C (normative) Fuel Consumption Type Approval Report / Type Approval
Application Report2) for Non-off-vehicle-chargeable Hybrid Electric Vehicles ... 21
Appendix D (normative) Fuel Consumption Type Approval Report / Type Approval
Application Report2) for Off-vehicle-chargeable Hybrid Electric Vehicles ... 26
Bibliography ... 32
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives
for Standardization - Part 1: Rules for the Structure and Drafting of Standardizing Documents.
This document serves as a replacement for GB 19578-2021 Fuel Consumption Limits for
Passenger Cars. In comparison with GB 19578-2021, apart from structural adjustments and
editorial modifications, the main technical changes are as follows:
a) The requirement that the vehicle type approval values of fuel consumption shall not
exceed the limit values is added (see 7.1);
b) The fuel consumption limits of vehicle types are modified (see 7.2 and 7.3; 7.1 and
7.2 of Version 2021);
c) The relevant requirements for production consistency are modified (see Chapter 8;
Chapter 8 of Version 2021);
d) The requirements for modification and certification extension are deleted (see
Chapter 9 of Version 2021);
e) The same type determination is added (see Chapter 9);
f) The fuel consumption type approval report / type approval application report for non-
off-vehicle-chargeable hybrid electric vehicles is added (see Appendix C);
g) The energy consumption type approval report / type approval application report for
off-vehicle-chargeable hybrid electric vehicles is added (see Appendix D).
Please be noted that certain content of this document may involve patents. The institution
issuing this document does not undertake the responsibility of identifying these patents.
This document was proposed by and shall be under the jurisdiction of Ministry of Industry and
Information Technology of the People’s Republic of China.
This document was firstly issued in 2004, firstly revised in 2014 and secondly revised in 2021.
This is the third revision.
Fuel Consumption Limits for Passenger Cars
1 Scope
This document specifies the application for type approval of passenger cars, the determination
of fuel consumption, the determination and recording of type approval values, the limits of fuel
consumption, production consistency and the same type determination.
This document applies to Category-M1 vehicles that can be fueled by gasoline or diesel fuel
and have a maximum design total mass not exceeding 3,500 kg.
This document is not applicable to vehicles that only use gas fuel or alcohol-ether fuel.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 19233-2020 Measurement Methods of Fuel Consumption for Light-duty Vehicles
GB/T 19596 Terminology of Electric Vehicles
GB/T 19753-2021 Test Methods for Energy Consumption of Light-duty Hybrid Electric
Vehicles
GB/T 37340 Conversion Methods for Energy Consumption of Electric Vehicles
3 Terms and Definitions
The terms and definitions defined in GB/T 19596 are applicable to this document.
4 Application of Type Approval
4.1 For a vehicle type or a system of vehicles that complies with the requirements of 10.2.1 in
GB/T 19233-2020 or 8.1 in GB/T19753-2021, the application for type approval of fuel
consumption shall be submitted by the manufacturer or its legal representative.
4.2 The application shall be accompanied by the following documents and detailed information
(if there is a schematic diagram, it shall thoroughly explain the details in an appropriate scale):
a) Description of the engine system characteristics specified in Appendix A;
b) The fuel consumption type approval application report specified in Appendix B ~
Appendix D as applicable, but without filling in the test values, type approval values,
limit values and inspection institution information, etc.
4.3 A sample vehicle representing the type or system of vehicles to be approved shall be
submitted to the inspection institution responsible for type approval test.
5 Determination of Fuel Consumption
The fuel consumption of gasoline, diesel, bi-fuel, and dual-fuel vehicles shall be determined in
accordance with the test method specified in GB/T 19233-2020 using the World Light Vehicle
Test Cycle (WLTC). The fuel consumption of off-vehicle-chargeable and non-off-vehicle-
chargeable hybrid electric vehicles shall be determined using the WLTC in accordance with the
test method specified in GB/T 19753-2021.
6 Determination and Recording of Type Approval Values
The inspection institution responsible for type approval test shall determine and record the
vehicle type approval values in accordance with the following requirements.
a) In accordance with GB/T 19233-2020, determine the fuel consumption type approval
values (comprehensive fuel consumption) of gasoline, diesel, bi-fuel, and dual-fuel
vehicles, compare the results with the corresponding limits calculated by Formula (1)
and Formula (2), and record the comparison results in the fuel consumption type
approval report specified in Appendix B.
b) In accordance with GB/T 19753-2021, determine the fuel consumption type approval
values (comprehensive fuel consumption) of non-off-vehicle-chargeable hybrid
electric vehicles, compare the results with the corresponding limits calculated by
Formula (1) and Formula (2), and record the comparison results in the fuel
consumption type approval report specified in Appendix C.
c) In accordance with GB/T 19753-2021, determine the OVC-HEV fuel consumption
and OVC-HEV power consumption type approval values of off-vehicle-chargeable
hybrid electric vehicles, and in accordance with G.3 in GB/T 19753-2021 (convert it
in accordance with the simple conversion method in GB/T 37340), calculate the
OVC-HEV converted fuel consumption. Compare the OVC-HEV converted fuel
consumption with the corresponding limits calculated by Formula (1) and Formula
(2), and record the comparison results in the energy consumption type approval report
specified in Appendix D.
7 Fuel Consumption Limits
7.1 The type-approved fuel consumption value of the vehicle type and the OVC-HEV converted
8 Production Consistency
The fuel consumption of gasoline, diesel, bi-fuel, and dual-fuel vehicles shall satisfy the
requirements of GB/T 19233-2020 for production consistency. The fuel consumption of non-
off-vehicle-chargeable hybrid electric vehicles shall satisfy the requirements of GB/T 19753-
2021 for production consistency; the fuel consumption and power consumption of off-vehicle-
chargeable hybrid electric vehicles shall satisfy the requirements of GB/T 19753-2021 for
production consistency.
9 Same Type Determination
9.1 If the following provisions are satisfied, then, they are considered to be of the same type:
a) The basic characteristics, parameters and components of the engines are the same;
NOTE: for the basic characteristics and parameters of the engines, see relevant requirements of
6.1.1 in GB 18352.6-2016.
b) The exhaust pollution control device is the same;
NOTE: for exhaust pollution control devices, see relevant requirements of 6.1.2 in GB 18352.6-
2016.
c) The front of the vehicle has the same shape, and the frontal area is the same or reduced;
d) The number of seats (rows) is the same or reduced, and the type-approved fuel
consumption value of the basic vehicle type satisfies the corresponding limit
requirements of the vehicle type that is deemed to be the same;
e) The drive type is the same;
f) The transmission type is the same;
g) The transmission ratio of each gear is the same or varies by no more than 8%;
h) The total speed ratio change caused by the different rolling circumferences of the
optional tires does not exceed 8%;
i) The curb mass is the same or reduced, and the type-approved fuel consumption value
of the basic vehicle type satisfies the corresponding limit requirements of the vehicle
type that is deemed to be the same;
j) The vehicles use the same minimum fuel designation.
9.2 For hybrid electric vehicles, in addition to the requirements of 9.1, the following conditions
shall also be satisfied: