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ESG Data (Environment)

Metrics Calculation Scope Non-consolidated: ISUZU MOTORS LIMITED Consolidated: ISUZU MOTORS LIMITED and its 60 domestic and overseas consolidated subsidiaries*
  1. *The number of domestic and overseas consolidated subsidiaries has changed as a result of mergers and other events involving these subsidiaries. The calculation scope covers 58 companies for fiscal 2024 and 59 companies for fiscal 2025.

Consolidated Data

Trends in GHG Emissions

Trends in GHG Emissions
  1. *Results for fiscal 2026 are provisional, as the calculation scope includes companies that are still compiling their data.
  2. *Base year emissions may be calculated retroactively in accordance with the GHG Protocol.

Trends in Waste Generation

Trends in Waste Generation
  1. *Results for fiscal 2026 are provisional, as the calculation scope includes companies that are still compiling their data.

Non-Consolidated Data

Isuzu's Environmental Management System

In the past, Isuzu operated its environmental management system on a site-by-site basis. Following the fiscal 2016 revision of ISO 14001, this system was integrated company-wide. In December 2016, we expanded ISO 14001 certification to all Isuzu sites and transitioned to ISO 14001:2015. At present, Isuzu is implementing standardized environmental initiatives across all sites while undertaking company-wide efforts to reduce the environmental impact of our business operations and strengthen our environmental management.

Violations and Accidents Related to Environmental Laws and Regulations in FY2026

Isuzu had no violations of environmental laws and regulations, and no environmental accidents during fiscal 2026.

CO2 Emissions Mitigation Activities

Trends in CO2 Emissions from Energy
Trends in CO2 Emissions from Energy
Trends in Energy Consumption
Trends in Energy Consumption
  1. *The energy coefficient has been changed effective fiscal 2024.
  2. *Third-party assurance has been obtained for the fiscal 2026 results.
Trends in CO2 Emissions from Logistics
Trends in CO2 Emissions from Logistics

Activities to Reduce Resource Use

Reduction and Control of Waste

Trends in Waste Generation

Since fiscal 2012, Isuzu has not sent any waste to landfills and has achieved zero emissions.

Trends in Waste Generation
Trends in Plastic Product Industrial Waste Generation

As Isuzu generates 250 tons or more of plastic product industrial waste annually, it is classified as a large-volume generator under the Act on Promotion of Resource Circulation for Plastics*. In accordance with the Act, Isuzu has established targets for reducing the generation and promoting the recycling of plastic product industrial waste, and has implemented initiatives to achieve them, achieving those targets in fiscal 2026. We will further accelerate our ongoing efforts to reduce waste generation and promote recycling, pursuing systematic initiatives to achieve our targets.

  1. *Act on Promotion of Resource Circulation for Plastics
Trends in Plastic Product Industrial Waste Emissions
Act on Promotion of Resource Circulation for Plastics
Act on Promotion of Resource Circulation for Plastics
  1. *ASR: Automobile Shredder Residue

Reduction of Water Consumption

Trends in Water Resource Consumption
Trends in Water Resource Consumption

Environmental Risk Reduction Activities

Control of Fluorocarbon Emissions

Following the enforcement of the Act on Rational Use and Appropriate Management of Fluorocarbons (Fluorocarbon Emissions Control Act) in April 2015, Isuzu has been promoting the proper management of refrigerants in equipment that uses fluorocarbons—including commercial refrigeration and air-conditioning equipment—across all its sites, and also carries out inspections of such equipment. The Act requires business operators to report if their calculated fluorocarbon leakage is 1,000 t-CO2 per year or more; Isuzu has confirmed that its leakage in fiscal 2026 was below the level requiring a report.

Reduction of VOC Emissions

Isuzu is curbing emissions by recovering volatile organic compounds (VOCs) and taking other measures to control emissions from its plants, and is reviewing and improving its painting processes, which generate particularly high VOC emissions. These activities are conducted in line with the voluntary initiatives to control VOC emissions promoted by the Japan Automobile Manufacturers Association, Inc.

Trends in Total VOC Emissions
Trends in Total VOC Emissions
  1. *Effective fiscal 2026, the scope of aggregation and other relevant conditions have been revised, and previously reported figures have been recalculated on the same basis.

Proper Management of Emissions and Wastewater

At our plants, we properly manage boilers and other soot- and smoke-generating facilities, measuring and confirming that air pollutants in exhaust gases, such as nitrogen oxides (NOx) and sulfur oxides (SOx), are within regulatory standard values*. In addition, wastewater from our plants is treated at wastewater treatment facilities before being discharged into sewer systems or public water bodies. Discharged water is analyzed on a regular basis to confirm that it is within regulatory standard values.

  1. *Regulatory standard values are determined in accordance with laws or ordinances, whichever is stricter.
Fujisawa Plant: 8 Tsuchidana, Fujisawa City, Kanagawa Prefecture

Air

Item Equipment Regulation Value Measured Value
Maximum Average
NOx (ppm) Boilers 60 33 30.8
Metal melting furnaces 180 40 32.3
Paint baking furnaces 230 89 80.5
Soot and dust (g/Nm3) Boilers 0.3 0.001 0.001
Metal melting furnaces 0.3 0.0034 0.0066
Paint baking furnaces 0.2 0.0019 0.0019
  1. *SOx is excluded from measurement since all soot- and smoke-generating facilities use city gas as their fuel.

Water Quality (Discharge Destination: Hikiji River)

Item Regulation Value Measured Value
Maximum Minimum Average
pH 5.8-8.6 7.9 7.4 7.7
COD (mg/L) 60 26.0 12.0 18.7
BOD (mg/L) 60 16.0 8.2 10.8
SS (mg/L) 90 10.0 3.0 5.4
Oil content (mg/L) 5 3.0 1.0 1.7
Tochigi Plant: 2691 Hakuchu, Ohira-Machi, Tochigi City, Tochigi Prefecture

Air

Item Equipment Regulation Value Measured Value
Maximum Average
NOx (ppm) Boilers 150 47 26
Metal heating furnace 180 180 83
Gas engines 600 215 179
SOx (Nm3/h) Total volume regulation 17.5 0.3 0.08
Soot and dust (g/Nm3) Boilers 0.1 0.004 0.003
Metal heating furnace 0.2 0.029 0.008
Gas engines 0.05 0.004 0.002

Water Quality (Discharge Destination: Nagano River)

Item Regulation Value Measured Value
Maximum Minimum Average
pH 5.8-8.6 7.6 6.9 7.3
BOD (mg/L) 20 11.2 5.3 7.1
SS (mg/L) 20 6.0 2.8 1.0
Oil content (mg/L) 5 0.9 0.8 0.1
  1. *COD is excluded from measurement since plant wastewater is discharged into rivers.

Environmental Accounting

To carry out its environmental initiatives efficiently and on an ongoing basis, Isuzu calculates its environmental conservation costs and resulting environmental effects. We disclose this information to support management decisions on efficient investment in environmental initiatives, and as an indicator for evaluating the company.

Environmental Conservation Costs

Total investment was 31,975 million yen, an increase of 20,193 million yen YOY. Total expenses were 75,339 million yen, an increase of 14,254 million yen YOY. Details are shown in the table below. (Period: April 1, 2025 to March 31, 2026)

(Unit: million yen)
Category Investment Expenses Major Initiatives
Business area costs Pollution prevention costs 672 82 Prevention of air, water, and other kinds of pollution
Global environmental conservation costs 7,402 531 Implementing energy-saving activities, climate change measures, etc.
Resource recycling costs 252 1,368 Proper disposal of waste, development and improvement of waste disposal sites, etc.
Upstream/downstream costs 33 4,487 Promoting the recycling of end-of-life automobiles, 3Rs for waste, etc.
Management costs 0 1,537 Promoting environmental management, updating systems for gathering information such as environmental data, etc.
Research and development costs 23,616 67,224 Research and development of eco-friendly products that address EVs, emissions regulations, etc.
Social activity costs 0 32 Supporting environmental conservation activities such as tree planting, donating to environmental conservation organizations, etc.
Environmental damage costs 0 80 Pollution load levy, conservation measures against soil and groundwater contamination, etc.
Total 31,975 75,339
Environmental Conservation Effects

(Period: April 1, 2025 to March 31, 2026)

Category Effect details Effect
Economic effect (million yen) Reduction in energy costs through energy conservation 136
Profit on sale of valuable resources 1,685
Quantitative effect (t-CO2e) CO2 reduction 3,736

Business Activities and Major Environmental Impacts

Third-party assurance has been obtained for the fiscal 2026 data of items marked with a checkmark
FY2024 FY2025 FY2026
INPUT Total energy consumption (TJ) 4,000 3,961 4,034
　Power consumption 1,683 1,725 1,700
　LPG 22 20 19
　LNG 919 859 957
　City gas 1,125 1,130 1,131
　Other energy 251 226 227
Raw material input (thousand t)
　Iron and steel 33 27 33
　Aluminum 15 7 8
Forging stock 125 99 114
Water consumption (thousand m3) 2,151 2,004 1,849
　Groundwater 2,047 1,912 1,767
　Public water supply 104 92 82
OUTPUT Greenhouse gas (GHG) (t-CO2e)* 159,822 161,866 143,419
Waste generation (thousand t) 6.3 6.1 6.0
Final landfill disposal (thousand t) 0.0 0.0 0.0
Valuable resources (thousand t) 80.9 81.7 87.0
Recycling performance (%)
　ASR 96.9 97.2 96.3
　Air bags 96.7 96.5 96.6
VOC emissions (t) 610 610 458
Wastewater discharge (thousand m3) 2,151 2,004 1,849
  1. *Sum of Scope 1 and Scope 2

Material Flow

FY2025 material flow

GHG Emissions

Consolidated Data

Third-party assurance has been obtained for the fiscal 2026 data of items marked with a checkmark
FY2024 FY2025 FY2026
Total GHG emissions (t-CO2e) 126,313,253 110,455,324 112,987,711
　Scope 1 182,536 172,302 194,534
　Scope 2 271,812 260,785 191,433
　Scope 3 Total 125,858,905 110,022,237 112,601,744
　　Category 1 11,603,511 10,691,250 11,362,244
　　Category 2 264,658 375,330 461,575
　　Category 3* 115,757 73,992 75,247
　　Category 4 308,902 305,337 332,510
　　Category 5* 133,553 12,207 9,896
　　Category 6 7,734 7,070 7,253
　　Category 7 27,322 24,800 25,427
　　Category 8 - - -
　　Category 9 471,034 344,229 428,686
　　Category 10 14,275 14,444 16,771
　　Category 11 112,684,194 97,945,388 99,649,767
　　Category 12 141,733 160,177 173,471
　　Category 13 - - -
　　Category 14 - - -
　　Category 15 86,232 68,013 58,897
  1. ・Third-party assurance has been obtained for the fiscal 2026 Scope 3 results.
  2. ・Scope 1 and Scope 2 results for fiscal 2026 are provisional, as the calculation scope includes companies that are still compiling their data.
  3. *Because the number of items and sites included in the calculation are fewer compared to the fiscal 2025 results, activity volume also decreased, resulting in lower emissions.

Non-Consolidated Data

Third-party assurance has been obtained for the fiscal 2026 data of items marked with a checkmark
FY2024 FY2025 FY2026
Total GHG emissions (t-CO2e) 159,822 161,866 143,419
　Scope 1 115,370 110,713 122,176
　Scope 2 44,452 51,153 21,243
  1. ・Third-party assurance has been obtained for the fiscal 2024, fiscal 2025, and fiscal 2026 results.

Calculation Standards

Calculation Period FY2026 (April 1, 2025 to March 31, 2026)
Metrics Calculation Scope Non-consolidated: ISUZU MOTORS LIMITED
Consolidated: ISUZU MOTORS LIMITED and its 60 domestic and overseas consolidated subsidiaries
Scope Unit Definition, Calculation Standards, and Calculation Method
Greenhouse Gas (GHG) Consolidated ―

Scope 1 emissions (direct emissions), Scope 2 emissions (energy-related indirect emissions), and Scope 3 emissions (other indirect emissions)

[Calculation Standards]

  • GHG Protocol
  • Basic Guidelines on Accounting for Greenhouse Gas Emissions Throughout the Supply Chain
  • GX League Calculation, Monitoring, and Reporting Guidelines
Scope 1 Consolidated t-CO2e

GHG emissions from fuel use (direct emissions)

[Coefficients]

  • Ministry of the Environment, "List of Calculation Methods and Emission Factors under the System for Calculation, Reporting, and Disclosure Based on the Act on Promotion of Global Warming Countermeasures"
Scope 2 Consolidated t-CO2e

GHG emissions from the use of electricity and heat supplied by other companies (indirect emissions)

[Coefficients]

  • Japan: Ministry of the Environment and Ministry of Economy, Trade and Industry, "Emission Factors by Electric Utility"
  • Outside Japan: IEA, "Emissions Factors 2025"
Scope Unit Definition, Calculation Standards, and Calculation Method
Scope 3 Consolidated t-CO2e

Other GHG emissions (indirect emissions)

[Calculation Method]

Category 1: Purchased Goods and Services
　Value of purchased goods and services × emission factor

Category 2: Capital Goods
　Amount of capital goods acquired during the period × emission factor

Category 3: Fuel- and Energy-Related Activities Not Included in Scope 1 or 2
　Energy consumption by energy type × emission factor

Category 4: Upstream Transportation and Distribution
　Total emissions from procurement transportation and outsourced transportation

  • Procurement transportation: Procurement value × emission factor
  • Outsourced transportation: Emissions calculated based on transportation scenarios, and figures obtained from periodic reports under the Act on the Rational Use of Energy (specified shippers)

Category 5: Waste Generated in Operations
　Amount of waste generated × emission factor

Category 6: Business Travel
　Number of employees × emission factor

Category 7: Employee Commuting
　Number of employees × number of working days × emission factor

Category 9: Downstream Transportation and Distribution
　Total emissions from shipping transportation (excluding Category 4) and cargo handling/storage

  • Shipping transportation excluding Category 4: Calculated based on transportation scenarios
  • Cargo handling/storage: Total of Scope 1 and Scope 2 emissions at non-consolidated sales companies

Category 10: Processing of Sold Products
　Number of intermediate products shipped × emission factor

Category 11: Use of Sold Products
　Number of products sold × lifetime energy consumption × emission factor

Category 12: End-of-Life Treatment of Sold Products Weight of discarded products × emission factor

Category 15: Investments
　Investment amount × emission factor

[Coefficients and Emission Factors]

  • Ministry of the Environment, "List of Calculation Methods and Emission Factors under the Calculation, Reporting, and Disclosure System"
  • Ministry of the Environment, "Emission Factor Database for Calculating Greenhouse Gas Emissions, etc. of Organizations through the Supply Chain"
  • National Institute of Advanced Industrial Science and Technology (AIST), "IDEA"
  • Japan Automobile Manufacturers Association, Inc., "Carbon Footprint Guidelines for Automotive Products" (2024 edition)
Energy Consumption Non-consolidated TJ

Energy consumption from fuel use and from electricity/heat supplied by other companies

[Coefficients]

  • Ministry of the Environment, "List of Calculation Methods and Emission Factors under the System for Calculation, Reporting, and Disclosure Based on the Act on Promotion of Global Warming Countermeasures"
Scope Unit Definition, Calculation Standards, and Calculation Method
Water Consumption Non-consolidated 1,000 m3

Total water consumption (public water supply and groundwater)

[Calculation Standards]

  • Isuzu Group Environmental Activity Guidelines
Scope Unit Definition, Calculation Standards, and Calculation Method
Waste Generation Consolidated 1,000 tons

Total waste generation (including recycled waste and valuable resources)

[Calculation Standards]

  • Waste Management and Public Cleansing Act
  • Isuzu Group Environmental Activity Guidelines

Independent Third-Party Assurance Report (PDF)

Independent Assurance Report
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