Subway operates ~37,000 restaurants globally with zero emissions measurement, no targets, and no published sustainability reporting. The company acknowledges studying how to measure emissions while making vague commitments. Supply chain exposure to deforestation and factory farming is unquantified. Structural greenwashing: burden shifted to franchisees without enforcement.
Same formula for every company. No curve. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleStrongest on Resource Use & Waste and Water Impact (3/10, 3/10). Weakest on Transparency & Accountability and Targets & Commitments (1/10, 1/10).
12 sources used in this assessment. All publicly available. Each row shows which rubric questions it informed.
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Among the 46 major food service / restaurants brands we've scored, Subway sits 45th of 46.
Score history begins 8 February 2026.
As Subway's score updates, the trajectory will appear here.
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Subway is a global quick-service restaurant chain operating ~37,000 franchised locations across 100+ countries, serving submarine sandwiches, salads, and wraps. Founded in 1965, it is the world's largest restaurant chain by unit count. Now majority-owned by 3G Capital (acquired 2019), Subway generates ~$10 billion in system-wide sales annually.
Peer QSR giant with greater emissions transparency and 2030 science-based targets; Subway lags substantially.
View breakdown →Comparable franchised restaurant model; Domino's publishes more detailed sustainability reporting and reduction pathways.
View breakdown →Large global chicken-heavy QSR with similar supply chain deforestation/animal welfare exposure; KFC has stronger ESG disclosure.
View breakdown →Major competitor with documented sustainability commitments and third-party verification; Subway's disclosure significantly weaker.
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