{
 "cell_key_diesel": "model_fuel|FORD|FIESTA|__ALL__|DI|__ALL__|__ALL__",
 "cell_key_petrol": "model_fuel|FORD|FIESTA|__ALL__|PE|__ALL__|__ALL__",
 "citation_url": "https://obdcode.co.uk/mot/ford-fiesta/diesel-vs-petrol/",
 "cite_as": "Ford Fiesta petrol MOT tests (PE, 3,459,359 tests) passed 73.8% (95% CI 73.7–73.8) and diesel MOT tests (DI, 537,794 tests) passed 64.0% (95% CI 63.9–64.2). Compiled by OBDCode UK, edition 2026.1. These are not official statistics and not a DVSA or DVLA statistic. Contains public sector information licensed under the Open Government Licence v3.0.",
 "cite_rule": "The join, the control, the Wilson interval and the printed string are already computed. Re-running the extract is a different number, not a citation of this site.",
 "count_unit": "test_records",
 "edition": "2026.1",
 "explain_block_meta": {
  "edition": "2026.1",
  "explain_blocks": [
   {
    "block_id": "generic-reader--fuel-comparison",
    "content_sha256": "837aba9769fd428576a46c594f7427eec611a1691dd5e3991aeb1da6e4e377ff",
    "slot": "page-reader",
    "version": 1
   },
   {
    "block_id": "generic-cost--why-no-prices",
    "content_sha256": "0e885445e62eae2a97b06a8a5837fc6abf4c231b6b5fbfb758fda102493e7e10",
    "slot": "cost-honesty",
    "version": 1
   },
   {
    "block_id": "generic-mot--driving-after-a-fail",
    "content_sha256": "55f5161049f6b1f9fec9595c2accb2b6de732f34efafada4921c89253f574829",
    "slot": "mot-process",
    "version": 1
   },
   {
    "block_id": "generic-scope--what-mot-data-cannot-tell-you",
    "content_sha256": "90235766e245d89c0a0a3b0faca72ba9f74b25104a28435c757783b13f27fc95",
    "slot": "scope-caveat",
    "version": 1
   },
   {
    "block_id": "generic-scope--data-source-and-licence",
    "content_sha256": "e47fc30480a38833e4c4ff03db49e8b452304c36d24a3a38106c6938cec81727",
    "slot": "provenance",
    "version": 1
   }
  ],
  "mount_policy": "approved",
  "page_type": "fuel-comparison",
  "stamp": "generic-reader--fuel-comparison@1,generic-cost--why-no-prices@1,generic-mot--driving-after-a-fail@1,generic-scope--what-mot-data-cannot-tell-you@1,generic-scope--data-source-and-licence@1"
 },
 "fuel_scope": "PE+DI",
 "grain": "test records",
 "id": "https://obdcode.co.uk/mot/ford-fiesta/diesel-vs-petrol/",
 "isBasedOn": "https://www.data.gov.uk/dataset/c63fca52-ae4c-4b75-bab5-8b4735e1a4c9/anonymised-mot-tests-and-results",
 "kind": "fuel-comparison",
 "license": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
 "model_slug": "ford-fiesta",
 "n_diesel": 537794,
 "n_petrol": 3459359,
 "pin_is_not_cell_n": true,
 "pin_mil_n": 391384,
 "printed": "Ford Fiesta petrol MOT tests (PE, 3,459,359 tests) passed 73.8% (95% CI 73.7–73.8) and diesel MOT tests (DI, 537,794 tests) passed 64.0% (95% CI 63.9–64.2).",
 "printed_dataset_years": "2023–2025",
 "printed_diesel_pass_rate": "64.0%",
 "printed_diesel_pass_rate_ci": "64.0% (95% CI 63.9–64.2)",
 "printed_diesel_tests": "537,794",
 "printed_edition": "2026.1",
 "printed_fuel_gap_pp": "+9.7 points",
 "printed_petrol_pass_rate": "73.8%",
 "printed_petrol_pass_rate_ci": "73.8% (95% CI 73.7–73.8)",
 "printed_petrol_tests": "3,459,359",
 "printed_sha256": "f627b0b5bdfe916bec79e3de4f7d011d41828cea4be03408582c3af4131933bf",
 "query": "SELECT cell_key,n,successes,n_for_tier,rate_frac,printed_rate,printed_rate_ci,count_unit,page_type FROM cells WHERE cell_key IN ('model_fuel|FORD|FIESTA|__ALL__|PE|__ALL__|__ALL__','model_fuel|FORD|FIESTA|__ALL__|DI|__ALL__|__ALL__')",
 "successes_diesel": 344339,
 "successes_petrol": 2551726,
 "window": {
  "extract_years": [
   2023,
   2024,
   2025
  ]
 },
 "writer": {
  "core": "generator/ch11_number_core.py reprint_fuel_pair",
  "di_wilson_n": 537794,
  "di_wilson_successes": 344339,
  "gap": "generator/tools/build_facts.py format_gap_pp",
  "one_sided_reprint_di": "64.0% (95% CI 63.9–64.2)",
  "one_sided_reprint_pe": "73.8% (95% CI 73.7–73.8)",
  "pe_wilson_n": 3459359,
  "pe_wilson_successes": 2551726,
  "print": "generator/tools/build_facts.py",
  "wilson": "generator/tools/stats/wilson.py",
  "z": 1.96
 }
}