# CarBuyerIQ

> UK used-car intelligence: free vehicle checks by registration number, full MOT history for any UK car, MOT pass-rate statistics computed from millions of official DVSA test records, and plain-English buying guides written for UK used-car buyers. A paid full history check (outstanding finance, insurance write-off, stolen marker, salvage records, keeper history, valuation) is backed by a £10,000 Experian data guarantee.

Data notes: MOT statistics are aggregated from official DVSA test records and refreshed regularly. Vehicle data comes from DVLA and DVSA sources; history checks are powered by Experian. Prices and figures on article pages are rendered live, so quoted values are current at crawl time.

## Vehicle checks

- [Free car check](https://www.carbuyeriq.com/): enter any UK registration for an instant report with MOT history, mileage record and an AI risk verdict
- [Full vehicle check](https://www.carbuyeriq.com/car-check): what the paid history check includes and how the £10,000 data guarantee works
- [All vehicle checks](https://www.carbuyeriq.com/checks): the full range of individual checks, from outstanding finance and salvage history to manufacturer service records, valuations, deal scoring and used EV range, each bought individually for a one-off fee
- [Example report](https://www.carbuyeriq.com/example-report): a complete sample vehicle intelligence report
- [Free MOT history check](https://www.carbuyeriq.com/mot-check): full MOT test history for any UK registration

## MOT statistics (DVSA data)

- [MOT pass rates by make and model](https://www.carbuyeriq.com/mot-pass-rates): browse every model's pass rate, common failures and best years
- [Most reliable cars at MOT](https://www.carbuyeriq.com/mot-pass-rates/best): the 50 highest pass rates in the UK
- [Cars most likely to fail an MOT](https://www.carbuyeriq.com/mot-pass-rates/worst): the 50 lowest pass rates, plus per-failure-type rankings (corrosion, brakes, suspension and more)
- [UK MOT report](https://www.carbuyeriq.com/mot-pass-rates/report): headline findings from the DVSA MOT data, which models pass and fail most and why

## Open data

- [Open MOT pass-rate dataset](https://www.carbuyeriq.com/data): free CSV and JSON downloads of MOT pass and fail rates by make and model, with fail rate by mileage band and year of manufacture and the most common defect areas. Licensed CC BY 4.0 (underlying DVSA data under the Open Government Licence v3.0); the page gives a citation and BibTeX entry
- [Pass rates by model (CSV)](https://www.carbuyeriq.com/data/mot-pass-rates-by-model.csv): one row per model with tests, pass rate, UK average, rank and top defect area

## Markdown versions

Append .md to any guide URL or MOT model page URL to get a clean markdown version of the same page, with its canonical URL, last-updated date and source line. For example:

- [Ford Fiesta MOT pass rate (markdown)](https://www.carbuyeriq.com/mot-pass-rates/ford/fiesta.md)
- A guide at https://www.carbuyeriq.com/guides/{category}/{slug} is available at https://www.carbuyeriq.com/guides/{category}/{slug}.md

## Buying guides

- [All guides](https://www.carbuyeriq.com/guides): 1,300+ UK used-car guides across budget picks, first cars, model comparisons, depreciation, running costs, mileage risk, MOT advisories and negotiation
- [Cars to avoid](https://www.carbuyeriq.com/cars-to-avoid): models with documented reliability problems, by failure category
- [Live UK fuel prices](https://www.carbuyeriq.com/fuel-prices): station-level petrol and diesel prices from the GOV.UK Fuel Finder scheme

## Developers

- [Vehicle data API](https://www.carbuyeriq.com/api): metered API for vehicle, MOT and history data
- [MCP server for AI agents](https://www.carbuyeriq.com/mcp): MOT pass-rate lookup and free MOT history

## Full index

- [llms-full.txt](https://www.carbuyeriq.com/llms-full.txt): every published guide with a one-line summary, grouped by topic, key MOT figures for the most tested models, plus data provenance and citation guidance

## Sitemap

- [XML sitemap index](https://www.carbuyeriq.com/sitemap.xml)