{
  "url": "https://carsbuyer.org/pt/diesel-ou-gasolina/citroen-c4",
  "slug": "citroen-c4",
  "brand": "Citroën",
  "model": "C4",
  "compares": "fuel_type",
  "measured": "asking_price",
  "method": "log(price) ~ age + log(mileage) + side + age*side, OLS on active listings",
  "collected_until": "2026-09-15",
  "model_years": {
    "from": 2004,
    "to": 2023
  },
  "diesel": {
    "sample_size": 141,
    "annual_depreciation_rate": 0.0892,
    "median_asking_eur": 3950,
    "median_mileage_km": 267178
  },
  "gasoline": {
    "sample_size": 38,
    "annual_depreciation_rate": 0.0803,
    "median_asking_eur": 5275,
    "median_mileage_km": 135850
  },
  "rate_difference_pp_per_year": -0.9,
  "rate_difference_ci95_half_width_pp": 1.2,
  "distinguishable_at_95": false,
  "holds_value_better": null,
  "premium_by_age": [
    {
      "age": 12,
      "premium_of": "diesel",
      "premium": 0.1118,
      "ci95_half_width": 0.1029
    },
    {
      "age": 17,
      "premium_of": "diesel",
      "premium": 0.0586,
      "ci95_half_width": 0.0964
    },
    {
      "age": 19,
      "premium_of": "diesel",
      "premium": 0.0381,
      "ci95_half_width": 0.1072
    }
  ],
  "fit_r2": 0.848,
  "licence": "https://carsbuyer.org/pt/metodologia#licenca"
}