QC/T 1248-2025Greenhouse Gases – Quantitative Methods and Requirements of Product Carbon Footprint – Road Vehicle Products (English PDF)
温室气体 产品碳足迹量化方法与要求 道路车辆产品
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
December 29, 2025
Implementation date
December 29, 2025
Scope
QC/T 1248-2025 is the English-translated version of 温室气体 产品碳足迹量化方法与要求 道路车辆产品.
This Document specifies the quantification objectives, quantification range, list analysis, impact assessment, result explanation, product carbon footprint reporting, and product carbon footprint declaration for road vehicle products. It applies to the accounting and reporting of carbon emissions from complete vehicles, trailers, motorcycles, components, and materials. Other types of products may refer to this Document for implementation.
Document preview — QC/T 1248-2025
National Standard of the People's Republic of China
- ICS
- 43.020
Issued by: Ministry of Industry and Information Technology of the People’s Republic of China
Contents
- Foreword3
- Introduction4
- 1 Scope5
- 2 Normative References5
- 3 Terms and Definitions5
- 4 Abbreviated Terms10
- 5 Quantification Objectives10
- 6 Quantification Range10
- 7 List Analysis19
- 8 Impact Assessment28
- 9 Interpretation of the Results34
- 10 Report on Carbon Footprint of the Product34
- 11 Declaration on Carbon Footprint of the Product35
- Appendix A Data Collection Form for Quantifying the Carbon Footprint
- Appendix B Template for Study Report on Carbon Footprint of Road
- Appendix C (Normative) Data Quality Rating
- Appendix D (Informative) Global Warming Potential
- Bibliography47
Foreword
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization – Part 1: Rules for the Structure and Drafting of Standardizing Documents.
Please note some contents of this Document are not involved patents. The issuing agency of this Document shall not assume the responsibility to identify these patents.
This Document was proposed by and under the jurisdiction of National Technical Committee of Auto Standardization (SAC/TC 114).
Drafting organizations of this Document: China Automotive Technology and Research Center Co., Ltd.; China Automotive Carbon Digital Technology Center Co., Ltd.; Chongqing Changan Automobile Co., Ltd.; Beiqi Foton Motor Co., Ltd.; Guangdong Bangpu Cycle Technology Co., Ltd.; Zhejiang Geely Holding Group Co., Ltd.; Wuhan Power Battery Recycling Technology Co., Ltd.; Beijing CHJ Information Technology Co., Ltd.; Suzhou Botree Cycling Sci & Tech Co., Ltd.; CATARC Huangcheng Certification (Tianjin) Co., Ltd.; Nankai University; Volkswagen (China) Investment Co., Ltd.; SAIC-GM-Wuling Automobile Co., Ltd.; Pan Asia Technical Automotive Center Co., Ltd.; Shanghai Volkswagen Automotive Co., Ltd.; CATARC Automoitve Test Center (Ningbo) Co., Ltd.; CALB Group Co., Ltd.; Contemporary Amperex Technology Co., Limited; Hunan Brunp Recycling Technology Co., Ltd.; Hefei Gotion High- Tech Power Energy Co., Ltd.; China Auto Information Technology (Tianjin) Co., Ltd.; Chongqing University of Technology; Schaeffler Trading (Shanghai) Co., Ltd.; and Tsinghua University.
Chief drafting organizations of this Document: Zhang Tongzhu, Zhao Mingnan, Zheng Tianlei, Liu Shaohui, Lai Xinxue, Lai Lihui, Xu He, Yu Haijun, Li Jing, Li Xingmao, Zhang Yuping, Lin Xiao, Cui Chen, Lu Zhenghua, Wu Bin, Liu Zhipeng, Zhang Chikun, Tang Haiyong, Lin Guangliang, Chen Min, Cao Zhi, Han Zongliang, Fang Haifeng, Zhao Jinhui, Pan Xuexing, Cong Longze, Wang Wenbin, Bei Chuanyu, Yu Ning, Zhu Yueyan, Wang Ruoxin, Wang Rui, Shen Jian, Xu Ming, Zhou Xiaozhen, Wang Xue, Zhang Qincai, Wang Fuxin, Liu Honggang, Shi Hong, Gong Qinxue, and Jiang Zhaojuan.
Introduction
This Document outlines the requirements for carbon footprint accounting for road vehicle products arose from accounting principles, quantification methods, and carbon footprint reporting. It is expected to achieve the following:
--- Provide quantification requirements for the carbon footprint of road vehicle products;
product carbon footprint performance tracking and communication for road vehicles;
--- Prevent the transfer of carbon emissions from one stage of the road vehicle lifecycle to another or between product lifecycles;
potential opportunities for carbon emission reduction;
and reporting for road vehicle products;
production and manufacturing methods, raw material selection, transportation, recycling, and other end-of-life stages;
and plans throughout the road vehicle product lifecycle, and timely identify low-carbon supply chains;
--- Provide a basis for relevant decision-makers to determine more low-carbon road vehicle technology routes;
--- Provide reliable carbon footprint information for road vehicle products.
1 Scope
This Document specifies the quantification objectives, quantification range, list analysis, impact assessment, result explanation, product carbon footprint reporting, and product carbon footprint declaration for road vehicle products.
This Document applies to the accounting and reporting of carbon emissions from complete vehicles, trailers, motorcycles, components, and materials. Other types of products may refer to this Document for implementation.
2 Normative References
The provisions in following documents become the essential provisions of this Document through reference in this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document.
3 Terms and Definitions
3.1 Road vehicle products
Complete vehicle products such as automobiles, trailers, and motorcycles used on roads, vehicle parts (including new parts, remanufactured parts, and recycled parts from scrapped motor vehicles), and materials (including virgin automotive materials and recycled materials, etc.).
3.2 Biomass
Biologically derived materials, excluding materials embedded in geological structures and materials transformed into fossils.
NOTE 1: Includes organic matter (living and dead), such as trees, crops, grasses, tree litter, algae, animals, excrement, and biological waste.
NOTE 2: In this document, biomass does not include peat.
3.3 Biogenic carbon
Carbon that is derived from biomass.
3.4 Fossil carbon
Carbon that is contained in fossil materials.
EXAMPLE: Coal, oil and natural gas, and peat.
3.5 Product system
A collection of unit processes that possess basic flow and product flow, have one or more specific functions at the same time, and can simulate the product lifecycle.
3.7 Life cycle assessment; LCA
A compilation and assessment of the inputs, outputs, and potential environmental impacts of a product system throughout its entire life cycle.
3.8 Functional unit
A benchmark unit that is used to quantify the functions of a product system.
3.9 Declared unit
A benchmark unit that is used to quantify a portion of a product's carbon footprint.
3.10 System boundary
A set of criteria that is used to determine which unit processes are part of the product system.
3.11 Benchmarking boundary
To ensure the comparability of carbon footprint results for different automotive products, a fixed accounting boundary is established.
NOTE: With technological advancements and cost control, the benchmarking boundary for products will continuously expand towards the system boundary as standards are updated, ultimately achieving complete uniformity.
4 Abbreviated Terms
The following abbreviated terms apply to this Document.
CFP: Carbon Footprint of a Product;
5 Quantification Objectives
5.1 The overall objective of conducting carbon footprint studies on road vehicle products is to calculate the potential impact of road vehicle products on global warming, and the composition of the impact (expressed in CO2 equivalents) at different stages, processes, and spatial locations, by quantifying all significant greenhouse gas emissions and removals throughout the product lifecycle, in accordance with trade-off criteria (see 7.3).
NOTE: This quantification is directed to a range of audiences and supports a range of objectives and applications, including but not limited to independent and comparative studies, and long-term performance tracking.
5.2 When determining the objectives of a product carbon footprint study, the following shall be clearly stated:
b) Reasons for conducting the study;
c) Target audience (i.e., recipients of the study results);
d) Expected information reception and communication according to ISO 14026:2017 (if any).
6 Quantification Range
6.2 Declared units
6.2.1 For vehicle materials or components, when their primary function cannot be determined, declared units can be used to calculate their carbon footprint. […]
6.3 Accounting boundary
6.3.1 Setting accounting boundary
6.3.1.1 The selection of accounting boundary shall be consistent with the purpose of the carbon footprint study; and the criteria used to establish accounting boundaries, such as trade-off criteria, shall be clearly defined and explained. 6.3.1.2 Based on the research purpose, this Document divides the accounting boundaries into benchmarking boundaries and system boundaries. Neither includes carbon emissions from infrastructure such as roads and factory buildings, equipment in each process, personnel within the factory area, and living facilities. 6.3.1.3 For complete vehicle products, the carbon footprint accounting boundaries are divided into benchmarking boundaries and system boundaries, as shown in Figure 1. The benchmarking boundary includes the production stage of road vehicle product materials (including virgin materials and recycled materials), the product manufacturing stage, and the usage stage, for conducting carbon footprint declarations or information exchange for road vehicle products, enabling comparisons between products with the same functions. The system boundary defines all unit processes or procedures that must be reported in the carbon footprint. Based on the benchmarking boundary, it also includes other parts processing, packaging, and transportation processes. 6.3.1.4 For component products (including remanufactured and reused parts), the carbon footprint accounting boundary is also divided into a benchmarking boundary and a system boundary, as shown in Figures 2 to 4. […]
7 List Analysis
7.1 Data collection and verification
7.1.1 General
7.1.1.1 For all unit processes within the system boundary, qualitative and quantitative data shall be collected and included in the life cycle list. These data, obtained through measurement, calculation, or estimation, is used to quantify the inputs and outputs of the unit processes. See Appendix A for relevant process data collection tables.
7.1.1.2 For data that may significantly impact the research conclusions, detailed information on the data collection process, collection time, and data quality shall be provided. If this data does not meet the data quality requirements (see 7.1.6), it shall also be explained.
7.1.2 Activity data
7.1.2.1 The activity data can be obtained through instrument readings, purchasing records, financial statements, direct monitoring, quality balance, or other methods of collecting data from specific activities within the company's value chain. Furthermore, the company's internal systems shall be understood, including data update frequency, units, formats, and the availability of forecasts. Potential changes and their future impact on the accounting system shall be anticipated. Data availability within the annual accounting cycle shall also be considered to ensure high-quality data is collected at the right time for further calculations. 7.1.2.2 In addition to quantified activity data, relevant attribute values of purchased goods shall also be collected. Primary attributes refer to direct material attributes (e.g., material name, model), while secondary attributes further describe indirect characteristics (e.g., year, supplier country, supplier name, supplier number). […]
7.2 Data allocation
7.2.1 Basic requirements
7.2.1.1 Inputs and outputs shall be allocated to different products according to a clearly defined allocation procedure.
7.4 List calculation
8 Impact Assessment
8.1.1.1 Carbon footprint of road vehicle products
The carbon footprint of road vehicle products shall be calculated according to Formula (1); and the calculation result shall be rounded-off to two digits after the decimal point in accordance with GB/T 8170:
C carbon footprint of road vehicle products;
CMaterial carbon emissions during the material acquisition stage, in kgCO2e;
CProduction carbon emissions during the production stage, in kgCO2e;
CUse carbon emissions during the usage stage, in kgCO2e;
F - Total functions provided by the road vehicle product throughout its life cycle (if using functional unit) or mass, volume, etc. of the road vehicle product (if using declared unit).
8.1.1.3 Carbon emissions during production stage
The carbon emissions during the production stage shall be calculated according to Formula (5), and the calculation result shall be rounded-off to two digits after the decimal point in accordance with GB/T 8170: Er purchased energy or fuel r, in kWh, m3, or kg, etc.; […]
8.1.1.4 Carbon emissions during use stage
8.1.1.4.1 Carbon emissions during use stage shall be calculated according to Formula (6); […]
8.1.2.1 Carbon footprint of road vehicle products
The carbon footprint of road vehicle products shall be calculated according to Formula (7); and the calculation result shall be rounded-off to two digits after the decimal point according to GB/T 8170: C carbon footprint of road vehicle products; CPartproduction carbon emissions from other processing stages, in kgCO2e; CProduction carbon emissions from the whole vehicle production stage, in kgCO2e; CTransport carbon emissions from the transportation process, in kgCO2e; CUse carbon emissions during the usage stage, in kgCO2e; […]
9 Interpretation of the Results
footprint and partial product carbon footprint from the life cycle list analysis and lifecycle impact assessment;
NOTE: Significant links may include life cycle stages, unit processes, or flows.
b) Assessment of completeness, consistency, and sensitivity analysis;
c) Preparation of conclusions, limitations, and recommendations.
9.2 Results interpretation shall be conducted according to the objective and range of the product carbon footprint study. The interpretation shall include the following:
a) Description of the product carbon footprint and carbon footprint at each stage;
b) Analysis of uncertainties, including the application or range of trade-off criteria;
c) Detailed documentation of the selected allocation procedures;
d) Description of the limitations of the product carbon footprint study.
a) Analysis of the sensitivity of key inputs, outputs, and methodological choices (including allocation procedures) to understand the sensitivity and uncertainty of the results;
b) Assessment of the impact of alternative use scenarios on the final results;
c) Assessment of the impact of different end-of-life stage scenarios on the final results;
d) Assessment of the impact of recommendations on the results;
10 Report on Carbon Footprint of the Product
10.1 The objective of the study report on carbon footprint of the product is to demonstrate that the product carbon footprint, or a portion thereof, meet the requirements of this Document.
10.3 The results, data, methods, assumptions, and life cycle interpretations shall be fully, accurately, unbiasedly, transparently, and in detail documented and explained in the study report on carbon footprint of the product so that stakeholders can understand the inherent complexity of the product carbon footprint and the trade-offs made.
10.4 See Appendix B for the report template on carbon footprint of the product.
11 Declaration on Carbon Footprint of the Product
See Appendix B for the study report on carbon footprint of the product in related declarations or information exchanges.
Appendix A Data Collection Form for Quantifying the Carbon Footprint
A.1 Material acquisition stage
The material input list at the material acquisition stage is shown in Table A.1.
A.2 Other processing stages
The fuel input/output list at other processing stages is shown in Table A.2.
Appendix B Template for Study Report on Carbon Footprint of Road
The template for study report on carbon footprint of road vehicle products is as follows.
Take as functional unit or declared unit.
□ Use stage □ Transportation stage □ End-of-life stage This excludes carbon emissions from infrastructure such as roads and factory buildings, equipment used in each process, and personnel and living facilities within the factory area.
The used trade-off criteria are based on The specific rules are as follows:
A complete list of all material/energy inputs and outputs within the boundary of road vehicle product shall be compiled as the basis for carbon emission accounting. Any special circumstances, outliers, or other issues in the data list shall be clearly explained in the report.
The data collection period shall be reported.
Process data not included in the list data shall be reported, or adjusted according to the tradeoff criteria.
The specific allocation conditions are as follows:
Remaining clauses in the full document
- Appendix C Data Quality Rating
- Appendix D Global Warming Potential
- Bibliography
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 47 pages — is available in the English PDF.
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