{
 "ageUK": {
  "source": "generational-2025",
  "label": "UK, all models combined (BEV + PHEV, cars + vans), tested in 2025",
  "rows": [
   {
    "age": "0–1",
    "p25": 97.91,
    "p50": 100.0,
    "p75": 100.0
   },
   {
    "age": "1–2",
    "p25": 97.23,
    "p50": 99.26,
    "p75": 100.0
   },
   {
    "age": "2–3",
    "p25": 95.0,
    "p50": 96.94,
    "p75": 99.89
   },
   {
    "age": "3–4",
    "p25": 92.98,
    "p50": 95.17,
    "p75": 98.19
   },
   {
    "age": "4–5",
    "p25": 91.64,
    "p50": 93.53,
    "p75": 96.49
   },
   {
    "age": "5–6",
    "p25": 89.01,
    "p50": 92.26,
    "p75": 96.0
   },
   {
    "age": "6–7",
    "p25": 88.13,
    "p50": 90.75,
    "p75": 93.5
   },
   {
    "age": "7–8",
    "p25": 87.96,
    "p50": 90.0,
    "p75": 93.85
   },
   {
    "age": "8–12",
    "p25": 82.0,
    "p50": 85.04,
    "p75": 90.0
   }
  ],
  "extra": "Average SoH across all vehicles: 95.15%. In 4–5-year-old vehicles the lowest-performing 1% fell to 80.76%."
 },
 "mileageSE": {
  "source": "carla-2026-mileage",
  "label": "Sweden, all models combined, 9,954 AVILOO tests 2022–2026",
  "rows": [
   {
    "km": "up to 10,000",
    "soh": 98.6
   },
   {
    "km": "50,000",
    "soh": 94.4
   },
   {
    "km": "100,000",
    "soh": 92.4
   }
  ]
 },
 "adacMinimum": {
  "source": "adac-used-guide",
  "label": "ADAC experts' minimum expected SoH (all models)",
  "rows": [
   {
    "km": 50000,
    "min": 92
   },
   {
    "km": 100000,
    "min": 88
   },
   {
    "km": 150000,
    "min": 84
   },
   {
    "km": 200000,
    "min": 80
   }
  ]
 },
 "geotab": {
  "source": "geotab-2025",
  "text": "Average degradation 2.3% per year across 21 make-models (2025 analysis of 22,700 fleet EVs); light cars averaged 2.0%/year, MPVs/light vans 2.7%/year; 8 of 11 established models from the 2023 dataset stabilised at 1.4%/year."
 },
 "whichUK": {
  "source": "which-2026",
  "label": "UK owner survey, all models: average remaining range vs new, by registration year (self-reported)",
  "rows": [
   {
    "reg": "2024–25",
    "pct": 97
   },
   {
    "reg": "2022–23",
    "pct": 95
   },
   {
    "reg": "2020–21",
    "pct": 95
   },
   {
    "reg": "2018–19",
    "pct": 94
   }
  ]
 }
}