Subaru sustainability score: 29/100

Subaru discloses Scope 1 and 2 emissions using GHG Protocol methodology: FYE March 2025 totalled 569,337 tonnes CO₂e (market-based), a 17% reduction versus FY2017 baseline. Multi-year data published in Sustainability Web 2024 and Integrated Report. No third-party verification of emissions data found.

Subaru reports comprehensive Scope 3 emissions across all material categories totalling approximately 39.4 million tonnes CO₂e in 2024, with use-phase emissions (Category 11) dominating. Life Cycle Assessments conducted on vehicles. No evidence of active supplier engagement programme; supply chain footprint increased significantly year-on-year.

Absolute total emissions rose dramatically from 31.1 million tonnes CO₂e (2023) to 39.9 million tonnes (2024)—a 28% increase driven by Scope 3. Scope 1&2 showed 17% reduction from FY2017 baseline, overwhelmed by rising product-use emissions. BEV sales reached only 1.9% of global sales against 50% 2030 target.

Renewable energy accounts for 10% of Group energy consumption and 22.8% of electricity (FYE March 2025). Subaru of Indiana facility claims 100% renewable energy via certificates, but one facility does not constitute Group coverage. Not an RE100 member; no power purchase agreements disclosed. No comprehensive renewable energy transition plan found.

Subaru endorsed Keidanren Declaration of Biodiversity; SIA plant designated Backyard Wildlife Habitat by National Wildlife Federation. Arbor Day Foundation partnership distributed 1.1 million trees. No TNFD adoption, no quantified nature footprint, and no systematic biodiversity impact assessments across supply chain.

Subaru operates zero-landfill manufacturing across all plants; SIA facility was first US automotive plant to achieve this. Plants recycle 99.3% of waste. In 2024, 51 million pounds of vehicle parts remanufactured, preventing 155,000 tonnes CO₂e. ISO 14001 certified since 1998. Measurable circular targets with demonstrated outcomes.

Third-party water risk assessments conducted at major production sites. Utsunomiya Plant recycles 35.2% of surface treatment water (34,545 m³). Group water consumption tracked across industrial, tap, and groundwater sources. Pennsauken building achieved 50.5% water reduction post-irrigation retrofit. No comprehensive water stewardship programme or verified reduction targets.

Subaru targets carbon neutrality by 2050, 60% Scope 1&2 reduction by FYE March 2036 (vs FY2017), and 50% BEV sales by 2030. Not SBTi-validated. BEV penetration at 1.9% globally creates massive credibility gap with 2030 50% target. Internal carbon pricing set at ¥6,000/t-CO₂. Current trajectory does not support achievement.

Subaru publishes annual Integrated Report, Sustainability Web, and US Corporate Impact Report. Supports TCFD recommendations; joined TCFD Consortium and GX League (2024). Production & Environment Subcommittee oversees environmental management. No evidence of executive compensation linked to sustainability targets; no Chief Sustainability Officer identified. Emissions lack third-party verification.

2018 confirmation: workers falsified fuel economy and emissions test data at two Japanese factories affecting 900+ vehicles since 2012. Subaru claimed internal standards exceeded government requirements; no recall issued. Member of Alliance for Automotive Innovation (US) and JAMA (Japan)—both identified by InfluenceMap as lobbying to weaken EV transition and emission standards. Japanese automakers least prepared for EV transition.