UK MOT failure rates, 2024
About 3 in 10 cars failed their MOT at the first attempt in 2024.
- failed at the first attempt, Great Britain, 2024
- 28.3%failed at the first attempt, Great Britain, 2024
Still failed after any fix at the test centre: 22.8%
Data: DVSA MOT results · 2024 · 33,012,215 tests
Updated · Release dvsa-2024-v2
In calendar 2024, 28.28% of 33,012,215 initial car (class 4) MOT tests in Great Britain found at least one failing defect. 5.48% of tests had the defect rectified at the station (PRS); the strict fail rate was 22.8%. Source: DVSA anonymised MOT tests and results, release dvsa-2024-v2.
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Full figures, methods and downloads
Initial-failure rate by vehicle age
| Age | Initial-failure rate |
|---|---|
| 3 | 12.4% |
| 4 | 13.1% |
| 5 | 15.1% |
| 6 | 17.5% |
| 7 | 20.2% |
| 8 | 23.3% |
| 9 | 26.5% |
| 10 | 30.1% |
| 11 | 33.2% |
| 12 | 35.7% |
| 13 | 38.2% |
| 14 | 40.4% |
| 15 | 41.6% |
| 16 | 43.1% |
| 17 | 43.1% |
| 18 | 43.9% |
| 19 | 43.5% |
| 20+ | 41.0% |
By fuel type
| Fuel | Initial tests | Initial-failure |
|---|---|---|
| Petrol | 17,586,029 | 27.99% |
| Diesel | 13,564,731 | 30.51% |
| Hybrid | 1,027,081 | 13.43% |
| Electric | 389,856 | 14.45% |
| Hybrid Electric (Clean) | 305,779 | 17.93% |
Fuel rows are raw rates (not age-adjusted): electric fleets are much younger — compare with the age-adjusted index before drawing conclusions.
Best and worst mainstream cars (age-adjusted)
| Family | Index | Initial-fail | |
|---|---|---|---|
| best 1 | MINI Countryman | 69.3 | 16.11% |
| best 2 | Audi Q5 | 69.9 | 16.22% |
| best 3 | BMW 5 Series | 71.8 | 20.82% |
| worst 1 | DS 3 | 146.1 | 42.99% |
| worst 2 | Dacia Sandero | 144.4 | 30.86% |
| worst 3 | Renault Clio | 136.1 | 42.8% |
Download the data
Family-level aggregates (625 families, n ≥ 1,000): motriskindex-families-2024-v5.csv. Family-by-defect-group rates, excesses and over-representation ratios: motriskindex-defect-groups-2024-v5.csv. See the machine-readable manifest for per-column definitions, denominators, provenance and licensing. Source columns are OGL v3.0 (DVSA); original derivations are CC BY 4.0. Superseded v1 and v2 files are retained in the archive because they counted repeated DVSA 2024 records.