{"make": "Mercedes-Benz", "model": "E-Class", "segment": "luxury-sedan", "canonical": "https://cars.insightarise.com/mercedes-benz/e-class/", "generated": "2026-09-04", "data_through": "2026-09-02", "method_version": "2026-09-04", "source": "NHTSA Office of Defects Investigation: owner complaints, safety recalls and defect investigations", "units": {"complaints": "count of owner complaints on record for the model year", "per_year": "complaints per year the model year has been on the road (counted from 1 January of the model year; minimum 1 year)", "idx_vs_*": "per_year divided by the comparison group's mean per_year; 1.00 = same rate", "early": "complaints filed within the first 24 months after 1 January of the model year", "recent_12m": "complaints filed in the last 12 months of data", "severe": "complaints reporting a crash or a fire (each complaint counted once)", "recall_covered_share": "share of complaints whose broad component category also has at least one recall (a category match, not proof that the recall covers the complaint)"}, "limitations": "Counts are not adjusted for sales volume; complaints are self-reported to NHTSA and not verified individually; U.S.-market vehicles only.", "summary": {"make": "Mercedes-Benz", "model": "E-Class", "segment": "luxury-sedan", "term_shares": {"stall": {"count": 27, "share": 11.7}}, "years": [{"year": 2018, "complaints": 66, "per_year": 7.6, "recalls": 0, "severe_share": 7.6, "idx_vs_all": 0.18, "early": 15, "early_closed": true, "early_idx": 0.17, "recent_12m": 8, "recent_trend": null, "top_group": "engine", "investigations": 0, "park_warnings": 0}, {"year": 2019, "complaints": 54, "per_year": 7.0, "recalls": 0, "severe_share": 9.3, "idx_vs_all": 0.17, "early": 10, "early_closed": true, "early_idx": 0.12, "recent_12m": 7, "recent_trend": null, "top_group": "electrical", "investigations": 0, "park_warnings": 0}, {"year": 2020, "complaints": 20, "per_year": 3.0, "recalls": 0, "severe_share": 10.0, "idx_vs_all": 0.07, "early": 5, "early_closed": true, "early_idx": 0.09, "recent_12m": 3, "recent_trend": null, "top_group": "engine", "investigations": 0, "park_warnings": 0}, {"year": 2021, "complaints": 20, "per_year": 3.5, "recalls": 0, "severe_share": 5.0, "idx_vs_all": 0.08, "early": 7, "early_closed": true, "early_idx": 0.11, "recent_12m": 4, "recent_trend": null, "top_group": "engine", "investigations": 0, "park_warnings": 0}, {"year": 2022, "complaints": 21, "per_year": 4.5, "recalls": 0, "severe_share": 9.5, "idx_vs_all": 0.11, "early": 13, "early_closed": true, "early_idx": 0.18, "recent_12m": 4, "recent_trend": null, "top_group": "fuel", "investigations": 0, "park_warnings": 0}, {"year": 2023, "complaints": 24, "per_year": 6.5, "recalls": 0, "severe_share": 0.0, "idx_vs_all": 0.15, "early": 12, "early_closed": true, "early_idx": 0.14, "recent_12m": 8, "recent_trend": null, "top_group": "engine", "investigations": 0, "park_warnings": 0}, {"year": 2024, "complaints": 25, "per_year": 9.3, 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