{
  "source": "Carsbuyer",
  "source_url": "https://carsbuyer.org/fr/decote/bmw-420",
  "licence": "Citation autorisée avec mention de la source Carsbuyer et de la date.",
  "measured": "asking_price",
  "measured_note": "Prix DEMANDÉS dans les annonces actives sur AutoScout24, pas des prix de vente conclus.",
  "method": "log(prix) ~ millésime, moindres carrés sur les prix médians de chaque millésime comptant au moins cinq annonces",
  "collected_until": "2026-10-23",
  "updated_at": "2026-10-23T08:32:29Z",
  "market": "FR",
  "currency": "EUR",
  "language": "fr",
  "brand": "BMW",
  "model": "420",
  "slug": "bmw-420",
  "sample_size": 109,
  "model_years": {
    "from": 2016,
    "to": 2026
  },
  "annual_depreciation_rate": 0.094,
  "fit_r2": 0.982,
  "half_life_years": 7,
  "value_retained": [
    {
      "after_years": 3,
      "share_of_value": 0.744
    },
    {
      "after_years": 5,
      "share_of_value": 0.611
    },
    {
      "after_years": 8,
      "share_of_value": 0.455
    },
    {
      "after_years": 10,
      "share_of_value": 0.374
    }
  ],
  "curve_reference": {
    "age": 0,
    "model_year": 2026,
    "price_eur": 54421
  },
  "year_of_age_cost": {
    "note": "Valeurs issues de la courbe ajustée, pas des médianes brutes.",
    "points": [
      {
        "age": 0,
        "model_year": 2026,
        "cost_of_one_more_year_eur": 5103,
        "curve_price_eur": 54421
      },
      {
        "age": 3,
        "model_year": 2023,
        "cost_of_one_more_year_eur": 3798,
        "curve_price_eur": 40503
      },
      {
        "age": 5,
        "model_year": 2021,
        "cost_of_one_more_year_eur": 3119,
        "curve_price_eur": 33263
      },
      {
        "age": 8,
        "model_year": 2018,
        "cost_of_one_more_year_eur": 2321,
        "curve_price_eur": 24756
      },
      {
        "age": 10,
        "model_year": 2016,
        "cost_of_one_more_year_eur": 1906,
        "curve_price_eur": 20331
      }
    ]
  },
  "bend": {
    "age": null,
    "note": "Un ajustement avec cassure a été testé à chaque âge entre 4 et 15 ans ; il n'est publié que s'il bat nettement le taux constant."
  },
  "cheap_from": null,
  "by_model_year": [
    {
      "model_year": 2026,
      "sample_size": 7,
      "asking_price": {
        "median": 52880,
        "p25": 51390,
        "p75": 55440
      },
      "mileage_km_median": 18060
    },
    {
      "model_year": 2025,
      "sample_size": 41,
      "asking_price": {
        "median": 49990,
        "p25": 48900,
        "p75": 55890
      },
      "mileage_km_median": 19990
    },
    {
      "model_year": 2023,
      "sample_size": 5,
      "asking_price": {
        "median": 37990,
        "p25": 36900,
        "p75": 39900
      },
      "mileage_km_median": 76900
    },
    {
      "model_year": 2022,
      "sample_size": 6,
      "asking_price": {
        "median": 37970,
        "p25": 33162,
        "p75": 40490
      },
      "mileage_km_median": 66921
    },
    {
      "model_year": 2021,
      "sample_size": 22,
      "asking_price": {
        "median": 34900,
        "p25": 32821,
        "p75": 37732
      },
      "mileage_km_median": 71101
    },
    {
      "model_year": 2020,
      "sample_size": 8,
      "asking_price": {
        "median": 31740,
        "p25": 28990,
        "p75": 33565
      },
      "mileage_km_median": 69390
    },
    {
      "model_year": 2019,
      "sample_size": 5,
      "asking_price": {
        "median": 26990,
        "p25": 23950,
        "p75": 27480
      },
      "mileage_km_median": 84950
    },
    {
      "model_year": 2016,
      "sample_size": 5,
      "asking_price": {
        "median": 19490,
        "p25": 19490,
        "p75": 21990
      },
      "mileage_km_median": 155000
    }
  ],
  "related": {
    "model": "https://carsbuyer.org/fr/cote/bmw-420",
    "depreciation_index": "https://carsbuyer.org/fr/decote",
    "methodology": "https://carsbuyer.org/fr/methodologie"
  }
}