{
  "url": "https://carsbuyer.org/pt/manual-ou-automatica/smart-forfour",
  "slug": "smart-forfour",
  "brand": "Smart",
  "model": "ForFour",
  "compares": "transmission",
  "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
  },
  "manual": {
    "sample_size": 23,
    "annual_depreciation_rate": 0.0811,
    "median_asking_eur": 7500,
    "median_mileage_km": 95224
  },
  "automatic": {
    "sample_size": 37,
    "annual_depreciation_rate": 0.0527,
    "median_asking_eur": 10750,
    "median_mileage_km": 62000
  },
  "rate_difference_pp_per_year": -2.8,
  "rate_difference_ci95_half_width_pp": 1.8,
  "distinguishable_at_95": true,
  "holds_value_better": "automatic",
  "premium_by_age": [
    {
      "age": 7,
      "premium_of": "manual",
      "premium": -0.0487,
      "ci95_half_width": 0.124
    },
    {
      "age": 9,
      "premium_of": "manual",
      "premium": -0.1049,
      "ci95_half_width": 0.099
    },
    {
      "age": 11,
      "premium_of": "manual",
      "premium": -0.1577,
      "ci95_half_width": 0.0863
    }
  ],
  "fit_r2": 0.869,
  "licence": "https://carsbuyer.org/pt/metodologia#licenca"
}