Autoza Irish Used Car Price Index — May 2026 Snapshot
Monthly snapshot of used-car asking-price medians on the Autoza Ireland marketplace (autoza.co.uk). 1,771 publishable passenger-car listings from 51 distinct dealer accounts, aggregated into 12 (make, model, year band, fuel) cohorts and 40 broader (make, model, fuel) cohorts. Suppression-protected (n ≥ 10 floor), outlier-filtered, sample-size and confidence-tier disclosed on every cohort. Open dataset published alongside on Hugging Face under CC BY 4.0.
Headline findings
VW Golf Petrol (all years) — median asking price, n=52, IQR £13,200–£18,800, median 90,000 km
Source: Autoza/irish-used-car-price-index, by_segment config, May 2026 snapshot
VW Polo Petrol (all years) — median asking price, n=41, IQR £12,000–£17,000, median 70,000 km
Source: Autoza/irish-used-car-price-index, by_segment config, May 2026 snapshot
Skoda Kodiaq Diesel (all years) — median asking price, n=34, IQR £41,900–£50,400, median 90,000 km
Source: Autoza/irish-used-car-price-index, by_segment config, May 2026 snapshot
Skoda Octavia Diesel (all years) — median asking price, n=31, IQR £28,700–£35,400, median 55,000 km
Source: Autoza/irish-used-car-price-index, by_segment config, May 2026 snapshot
BMW 5 Series Diesel (all years) — median asking price, n=31, IQR £13,500–£31,200, median 170,000 km
Source: Autoza/irish-used-car-price-index, by_segment config, May 2026 snapshot
How to read this page
Each figure on this page is the published median for a specific cohort (a unique combination of make, model, and fuel type, optionally also year band). Sample sizes and confidence tiers are disclosed alongside every figure. Confidence tiers are derived from the sample size: "low" cohorts (10–19 listings) publish median price and median mileage only — the interquartile range is suppressed under our anonymisation rules. "Medium" cohorts (20–29 listings) and "high" cohorts (30+ listings) publish full quartiles. No figure on this page is an estimate, projection, or AI-generated value.
Coverage of this snapshot
The 2026-05 snapshot was generated from the live autoza.co.uk production database at the snapshot timestamp.
- →Publishable listings in scope: 1,771 (passenger cars only; status APPROVED or SOLD; price > 0; non-null make, model, year, mileage, fuel)
- →Distinct dealer accounts contributing listings: 51
- →Cohorts published in the granular config (by_segment_year — make, model, 3-year band, fuel): 12
- →Cohorts published in the broad config (by_segment — make, model, fuel; year mixed): 40
- →Cohorts at high confidence (n ≥ 30, full IQR published): 5
- →Cohorts at medium confidence (20 ≤ n < 30, full IQR published): 4
- →Cohorts at low confidence (10 ≤ n < 20, IQR withheld): 43
Other medium-confidence cohorts
Cohorts with 20–29 listings publish full quartiles but warrant cautious quotation given the moderate sample size.
- →Volkswagen Golf Diesel (all years) — median £17,000, IQR £13,300–£20,700, n=23, median mileage 150,000 km
- →Hyundai Tucson Diesel (all years) — median £18,500, IQR £16,000–£26,400, n=22, median mileage 130,000 km
- →SEAT Ateca Diesel (all years) — median £32,900, IQR £31,900–£36,900, n=21, median mileage 80,000 km
- →Skoda Superb Diesel (all years) — median £25,900, IQR £19,900–£37,600, n=20, median mileage 145,000 km
Year-band-specific medians (granular config)
When year precision matters, the granular config splits cohorts by 3-year band. 12 cohorts survived the n ≥ 10 floor at this snapshot.
- →Skoda Kodiaq 2021-2023 Diesel — median £43,900, n=23, median mileage 90,000 km, medium confidence
- →Skoda Octavia 2024-2026 Diesel — median £35,900, n=19, median mileage 40,000 km, low confidence
- →Skoda Octavia 2021-2023 Diesel — median £29,400, n=14, median mileage 75,000 km, low confidence
- →Volkswagen Polo 2015-2017 Petrol — median £13,000, n=29, median mileage 70,000 km, medium confidence
- →Volkswagen Golf 2015-2017 Petrol — median £14,000, n=25, median mileage 70,000 km, medium confidence
- →Volkswagen Golf 2018-2020 Petrol — median £19,000, n=16, median mileage 80,000 km, low confidence
- →BMW 5 Series 2018-2020 Diesel — median £28,000, n=11, median mileage 135,000 km, low confidence
- →Hyundai Tucson 2018-2020 Diesel — median £18,000, n=11, median mileage 150,000 km, low confidence
- →SEAT Ateca 2021-2023 Diesel — median £32,900, n=14, median mileage 85,000 km, low confidence
- →Skoda Karoq 2021-2023 Diesel — median £36,900, n=11, median mileage 50,000 km, low confidence
- →Skoda Superb 2021-2023 Diesel — median £27,000, n=11, median mileage 150,000 km, low confidence
- →Volkswagen Tiguan 2018-2020 Diesel — median £25,500, n=10, median mileage 155,000 km, low confidence
What this page is not
This page is a descriptive summary of the autoza.co.uk listings stock at a single monthly snapshot. It is not a national census of Irish used-car transactions, not a transaction-price dataset (asking prices only — buyers typically pay slightly less than asking), and not a forecast or projection. The dataset publishes descriptive statistics only at v0.x. There is no county-level breakout in the v0.1 pilot — county splits arrive when cell density supports them. There is no month-on-month change column at v0.1 — that becomes computable from v0.2 onward (the next snapshot).
Cross-validation gate at v0.1
The published cells are protected by the n ≥ 10 suppression floor and a 0.3×–3× outlier filter applied before each cohort's median is computed. An external cross-validation gate against Revenue's OMSP figures was tested as a candidate market-price anchor on 5 May 2026 and rejected — Revenue's "Current OMSP" is a tax-basis figure with depreciation curves that systematically lag the live used-car market. The single test (VW Polo 2016 1.0 MATCH 60PS @ 75,000 km) returned an Original OMSP of £15,402 and a Current OMSP of £3,733 against an Autoza cohort median of £13,000. Full evidence is recorded in the dataset's accuracy_report.json. The v0.1 pilot ships with the cross-validation gate marked advisory; an enforcing gate using a different anchor mix (CSO CPM20 directional MoM plus a permitted external benchmark) starts at v0.2.
Where to read more
The full open dataset, methodology, schema, FAQ, glossary, and researcher quick-start are published alongside the parquet output on Hugging Face. Citations from journalism, research, and downstream tools should point at the dataset URL directly rather than this page.
- →Open dataset: huggingface.co/datasets/Autoza/irish-used-car-price-index
- →Methodology, suppression rules, outlier filter, cross-validation status: METHODOLOGY.md alongside the dataset
- →Schema (22 fields, locked across releases): SCHEMA.md alongside the dataset
- →Frequently-asked questions: FAQ.md alongside the dataset
- →Glossary (Irish public-sector + statistical terms): GLOSSARY.md alongside the dataset
- →For researchers (sample queries, citation forms, validation hooks): FOR-RESEARCHERS.md alongside the dataset
- →Citation File Format (CFF v1.2.0) for academic-citation tools: CITATION.cff alongside the dataset
- →Latest blog analysis pointers (auto-refreshed weekly): LATEST-ANALYSIS.md alongside the dataset
Methodology
Each cohort is built from the autoza.co.uk production database at the snapshot timestamp. The inclusion filter is: status ∈ {APPROVED, SOLD}, type = car (passenger cars only), price > 0 (POA listings excluded), and all grain fields (make, model, year, mileage, fuel) non-null. Make and model are normalised against a versioned controlled vocabulary; fuel strings are normalised similarly. For each (make, model, year_band, fuel_type) group with at least 10 listings, the cohort median price and median mileage are computed after dropping outliers (any listing whose price is below 0.3× or above 3× the cohort's raw median, then the same on mileage). Quartiles (p25, p75) are published for cohorts with sample size ≥ 20; below 20 they are NULL. Cohorts with sample size < 10 are dropped from the published parquet entirely (Article 29 Working Party Opinion 05/2014, WP216-aligned anonymisation). The build pipeline asserts the absence of every PII column (dealer name, listing ID, VRM, VIN, exact price, exact mileage, postcode, contact info) before the parquet is written. The build is byte-deterministic for a given database snapshot.
How to cite this research
Press queries and data licensing enquiries: info@autoza.co.uk. Errata reports: open an issue on the Hugging Face dataset community tab, or email the same address with subject line "Errata — Autoza Price Index — YYYY-MM".
More from Autoza Research
Free, citable original research on the Irish used-car market. Quarterly index, annual state-of-the-market report, and our public market-data API.