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ESG Data (Environment)

Metrics Calculation Scope Non-consolidated: ISUZU MOTORS LIMITED
Consolidated: ISUZU MOTORS LIMITED and its 59 domestic and overseas subsidiaries*
  1. *The number of domestic and overseas consolidated subsidiaries has changed due to mergers of consolidated subsidiaries. The calculation range is 60 companies for FY2023 and 58 companies for FY2024.

Consolidated Data

Trends in GHG Emissions

Trends in GHG Emissions
  1. *FY2025 results are provisional values, as companies that are still compiling their data are included in the calculation.
  2. *Base year emissions may be calculated retroactively in accordance with the GHG Protocol.

Trends in Waste Generation

Trends in Waste Generation
  1. *FY2025 results are provisional values, as companies that are still compiling their data are included in the calculation.

Non-Consolidated Data

Isuzu's Environmental Management Structures

In the past, Isuzu operated its environmental management structures on a site-by-site basis. With the revision of ISO 14001 in fiscal 2016, the systems were integrated on a Group-wide basis. In December 2016, we expanded ISO 14001 certification to all Isuzu sites, and shifted to ISO 14001:2015.
At present, Isuzu is carrying out uniform environmental initiatives across all sites. Moreover, we are undertaking company-wide efforts to reduce the environmental burden resulting from our business operations and to strengthen our environmental management.

Violations and Accidents Related to Environmental Laws and Regulations in FY2025

Isuzu had no violations or environmental accidents related to environmental laws and regulations during FY2025.

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 for FY2024.
Trends in CO2 Emissions from Logistics
Trends in CO2 Emissions from Logistics

Activities to Reduce Resource Use

Reduce and Control Emissions

Trends in Waste Generation

Since FY2012, Isuzu has achieved zero emissions, with no waste being sent to landfills.

Trends in Waste Generation
Trends in Plastic Product Industrial Waste Emissions

As Isuzu emits more than 250 tons of plastic product industrial waste annually, the company is classified as a large-volume emitter under the Act on Promotion of Resource Circulation for Plastics*.
In accordance with the law, Isuzu has set goals for reducing and recycling plastic product industrial waste and implemented initiatives to achieve these goals. In FY2025, we successfully met our targets.
Isuzu will continue to accelerate its efforts to reduce waste and promote recycling, advancing methodical initiatives to achieve future targets.

  1. *Act on promotion of resource circulation for plastics
Trends in Plastic Product Industrial Waste Emissions
Trends in Recycling Performance Based on Automobile Recycling
Trends in Recycling Performance Based on Automobile Recycling
  1. *ASR: Automobile Shredder Residue

Reduction of Water Consumption

Trends in Water Resource Consumption
Trends in Water Resource Consumption

Environmental Risk Reduction Activities

Control Chlorofluorocarbon Emissions

In response to the Act for Control of Chlorofluorocarbon Emissions (Act on Rational Use and Proper Management of Fluorocarbons) effective from April 2015, Isuzu is promoting proper refrigerant management for business-use refrigeration air conditioning equipment and other equipment using chlorofluorocarbons at all of its bases, and is implementing inspections of all such equipment.
While this act requires business operators to report if their estimated leakage of chlorofluorocarbon exceeds 1,000 tons-CO2/year, Isuzu has verified that its leakage volume for FY2025 was lower than this level.

Reduction of VOC Emissions

Isuzu is reducing emissions through the recovery of volatile organic compounds (VOC), has reduced VOC emissions from its plants and reviewed and improved its painting processes, which entail particularly large VOC emissions.
This activity is promoted through voluntary efforts to reduce VOC emissions by the Japan Automobile Manufacturers Association, Inc.

Trend in Total VOC Emissions
Trend in Total VOC Emissions

Proper Management of Emissions and Wastewater

By properly maintaining boilers and other smoke-generating facilities, we ensure that the amount of air pollutants from emissions such as nitrogen oxides (NOx) and sulfur oxides (SOx) is within regulatory standard values*.
Further, wastewater from our plants is processed in a wastewater treatment facility before being discharged to sewer systems or public water areas. The discharged water is analyzed on a regular basis to ensure 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 32 29.6
Metal melting furnaces 180 41 32.8
Paint baking furnaces 230 93 88.5
Soot and dust (g/Nm3) Boilers 0.3 0.001 0.001
Metal melting furnaces 0.3 0.0074 0.0023
Paint baking furnaces 0.2 0.0018 0.0018
  1. *Since all facilities producing soot and smoke use city gas as their fuel, SOx is excluded from the scope of measurement.

Water Quality Discharge Destination: Hikiji River

Item Regulation Value Measured Value
Maximum Minimum Average
pH 5.8-8.6 7.9 7.1 7.7
COD (mg/L) 60 27.0 7.3 15.6
BOD (mg/L) 60 23.0 2.8 9.1
SS (mg/L) 90 14.0 2.0 6.6
Oil content (mg/L) 5 3.0 1.0 1.6
Tochigi Plant: 2691 Hakuchu, Ohira-Machi, Tochigi City, Tochigi Prefecture

Air

Item Equipment Regulation Value Measured Value
Maximum Average
NOx (ppm) Boilers 150 47 20
Metal heating furnace 180 170 97
Gas engines 600 191 163
SOx (Nm3/h) Total volume regulation 14.5 0.3 0.01
Soot and dust (g/Nm3) Boilers 0.1 0.001 0.001
Metal heating furnace 0.2 0.012 0.002
Gas engines 0.05 0.002 0.001

Water Quality Discharge Destination: Nagano River

Item Regulation Value Measured Value
Maximum Minimum Average
pH 5.8-8.6 7.6 7.2 7.3
BOD (mg/L) 20 16.8 1.8 6.1
SS (mg/L) 40 4.0 1.2 1.3
Oil content (mg/L) 5 0.0 0.0 0.0
  1. *COD is excluded from the scope of measurement since plant wastewater is discharged into rivers.

Environmental Accounting

To conduct environmental activities efficiently and continuously, Isuzu has calculated the costs and effects of environmental conservation.
We have disclosed information with the aim of helping to make management decisions for carrying out efficient investments in environmental activities, and as an evaluation index for businesses as well.

Environmental Conservation Costs

Total investment was 11,782 million yen, a 5,522 million yen increase YOY.
Total expenses were 61,085 million yen, a 8,238 million yen increase YOY.
Details are shown in the table below.

(Target Period: April 1, 2024 to March 31, 2025)

(Unit: million yen)
Classification Investment Expenses Major activities
Business area costs Pollution prevention costs 362 391 Prevention of air, water, and other kinds of pollution
Global environmental conservation costs 2,153 529 Implementing energy-saving activities, climate change measures, etc.
Resource recycling costs 181 132 Proper disposal of waste, development and improvement of waste disposal sites, etc.
Upstream/downstream costs 0 4,832 Encouraging the recycling of used automobiles, 3Rs for waste, etc.
Management costs 0 435 Promoting environmental management, updating systems for gathering information such as environmental data, etc.
R&D costs 9,086 54,740 R&D for eco-friendly products compliant with emissions regulations, etc.
Social activity costs 0 21 Supporting environmental conservation activities such as tree planting, donating to environmental conservation organizations, etc.
Environmental damage costs 0 5 Pollution load levy, conservation measures against soil and groundwater pollution, etc.
Total 11,782 61,085
Environmental Conservation Effects

(Period: April 1, 2024 to March 31, 2025)

Category Effect details Effect
Economic effect (millions of yen) Reduction in energy costs through energy conservation 149
Profit on sale of valuables 3,023
Quantitative effect (t-CO2e) CO2 reduction (t-CO2e) 4,082

Business Activities and Environmental Hazards

have been verified by a third party for the fiscal 2025 data.
FY2023 FY2024 FY2025
INPUT Energy input (GJ) 4,387,635 3,999,645 3,960,848
 Power consumption 2,076,515 1,682,534 1,725,066
 LPG 31,812 22,019 20,084
 LNG 808,459 918,627 859,485
 City gas 1,173,833 1,125,039 1,130,095
 Other energy 297,016 251,426 226,118
Raw material input amount (thousand-t)
 Iron and steel 43 33 27
 Aluminum 10 15 7
 Raw materials 152 125 99
Water usage (thousand m3) 2,174 2,151 2,004
 Industrial Water 2,055 2,047 1,912
 Public Water 119 104 92
OUTPUT Greenhouse gas (GHG) (t-CO2e) *1 195,036 159,822 161,866
Waste generation (thousand-t) 6.9 6.3 6.1
Final landfill (thousand-t) 0.0 0.0 0.0
Valuables (thousand-t) 87.6 80.9 81.7
Recycling result (%)
 ASR 97.0 96.9 97.2
 Air bags 95.0 96.7 96.5
VOC emissions (t) 596 610 610
Wastewater (thousand m3) 2,174 2,151 2,004
  1. Sum of Scope 1 and Scope 2

Material Flow

FY2025 material flow

Isuzu Group’s GHG emissions

have been verified by a third party for the fiscal 2025 data.
FY2023 FY2024 FY2025
Total GHG emissions (t-CO2e) 159,505,336 126,313,253 110,455,324
 Scope1 196,182 182,536 172,302
 Scope2 347,151 271,812 260,785
 Scope3 Total 158,962,003 125,858,905 110,022,237
  Category 1 11,424,587 11,603,511 10,691,250
  Category 2*1 274,637 264,658 375,330
  Category 3*2 126,172 115,757 73,992
  Category 4 291,709 308,902 305,337
  Category 5※2 268,355 133,553 12,207
  Category 6 7,753 7,734 7,070
  Category 7 27,411 27,322 24,800
  Category 8 - - -
  Category 9 553,476 471,034 344,229
  Category 10 15,552 14,275 14,444
  Category 11 145,727,206 112,684,194 97,945,388
  Category 12 173,636 141,733 160,177
  Category 13 - - -
  Category 14 - - -
  Category 15 71,509 86,232 68,013
  1. In order to achieve a more comprehensive and accurate calculation in all categories, the scope of calculation was revised based on actual results for fiscal 2025, resulting in an expansion of the business activities and products subject to calculation. Therefore, we have retroactively recalculated the results for fiscal 2023 and fiscal 2024.
  2. Third-party assurance has been obtained for Scope 3 results for fiscal 2025.
  3. Scope 1 and 2 results for fiscal 2025 are provisional values, as companies that are still compiling data are included in the calculation range.
  4. *1Due to changes in accounting standards from fiscal 2005 results, activity volume increased, resulting in an increase in emissions.
  5. *2Due to a decrease in the number of items and locations subject to calculation from fiscal 2005 results, activity volume decreased, resulting in a reduction in emissions.

Isuzu’s GHG emissions

FY2023 FY2024 FY2025
Total GHG emissions (t-CO2e) 195,036 159,822 161,866
 Scope1 119,189 115,370 110,713
 Scope2 75,847 44,452 51,153
  1. Third-party assurance has been obtained for the results for FY2023, FY2024, and FY2025.