# Does London pass its MOT

> The London postal district against the country, on the same test.

- Category: Transport
- Cadence: annual
- Status: Published on a annual cadence.
- Dataset key: `mot-pass-rate-history`
- Source: [DVSA](https://open.data.dvsa.gov.uk/mot-anonymised/index.html)
- Licence: Open Government Licence v3.0 — [terms](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
- Canonical page: [https://londongraph.com/g/does-london-pass-its-mot](https://londongraph.com/g/does-london-pass-its-mot)
- Machine-readable record: [https://londongraph.com/data/does-london-pass-its-mot](https://londongraph.com/data/does-london-pass-its-mot)

## Methodology

Share of initial MOT tests resulting in a pass (P or PRS), from DVSA's anonymised test extract, for class 4 vehicles — cars and light vans. Retests are excluded — see the ranked graph for why. London here means the eight postal areas wholly inside the city (E, EC, N, NW, SE, SW, W, WC); the twelve fringe areas that straddle the boundary are deliberately left out of this line rather than quietly inflating it, which does mean this London is the postal district and not Greater London. Great Britain is every class 4 initial test in the extract; DVSA tests Great Britain only, as Northern Ireland is administered separately.

## Visualisations

- [London vs Great Britain](https://londongraph.com/g/does-london-pass-its-mot): Compare the class 4 initial-test pass rate on the same published basis.
- [What the pass contains](https://londongraph.com/g/does-london-pass-its-mot?view=outcomes): Separate clean passes, rectification at station and failures.
- [Area rank change](https://londongraph.com/g/does-london-pass-its-mot?view=area-change): Follow every postcode area's first-time pass rate across available years. Caveat: Twelve areas straddle Greater London and remain marked as fringe in the area detail.
- [The repair loop](https://londongraph.com/g/does-london-pass-its-mot?view=retests): Show retest outcomes separately from the initial-test headline. Caveat: Retest rows describe testing activity and cannot be read as the share of unique failed vehicles that returned.

## Citation guidance

Attribute the original publisher named above and identify LondonGraph as the visualisation and methodology layer. Do not describe live values as a historical census, and do not present placeholder values as observations.