2021 MINI One MOT pass rate: 91.7% (2,627 tests)
Is the 2021 One getting worse?
Pass rate of 2021-registered cars across recent test years:
| Test year | Pass rate | |
|---|---|---|
| 2024 | 92.2% +1.5 vs same-age |
|
| 2025 | 91.2% +1.0 vs same-age |
The raw rate normally falls as cars age. The “vs same-age” figure compares this cohort with all UK cars registered in the same year, so normal ageing is not mistaken for a bad model year.
What fails on a 2021 One
| # | System | Defects recorded | Share |
|---|---|---|---|
| 1 | Tyres | 142 | 47.3% |
| 2 | Visibility | 97 | 32.3% |
| 3 | Brakes | 34 | 11.3% |
| 4 | Lamps, reflectors and electrical equipment | 10 | 3.3% |
| 5 | Suspension | 4 | 1.3% |
| 6 | Body, chassis, structure | 4 | 1.3% |
All One years compared
| Registration year | Tests | Pass rate | Vs same-age | Median mileage |
|---|---|---|---|---|
| 2011 | 2,157 | 77.2% | +8.1 pts | 79,412 |
| 2012 | 10,806 | 79.8% | +8.6 pts | 70,878 |
| 2013 | 19,384 | 80.2% | +6.9 pts | 65,335 |
| 2014 | 18,319 | 85.3% | +9.5 pts | 62,088 |
| 2015 | 30,910 | 87.0% | +8.3 pts | 54,905 |
| 2016 | 24,674 | 88.4% | +7.1 pts | 48,146 |
| 2017 | 15,904 | 88.8% | +4.8 pts | 41,168 |
| 2018 | 4,606 | 90.9% | +4.5 pts | 32,379 |
| 2019 | 4,572 | 91.1% | +2.7 pts | 27,324 |
| 2020 | 3,435 | 91.9% | +2.0 pts | 22,338 |
| 2021 (this page) | 2,627 | 91.7% | +1.3 pts | 21,647 |
Weighing up which year to buy? See the full ranking: MINI One years to avoid.
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FAQs
Is a 2021 MINI One reliable?
2021-registered examples passed 91.7% of their MOT tests (2,627 tests, 2023–2025), +1.3 points versus all UK cars registered in the same year. At roughly 5 years old with a median 21,647 miles, condition now varies car by car — always check the individual MOT history.
What mileage is too high for a 2021 One?
The median tested example shows 21,647 miles. Anything far beyond that isn't automatically bad — a motorway-mile car with consistent service records often beats a low-mileage school-run car — but price accordingly and scrutinise the mileage trail for gaps or drops.
Source: DVSA Anonymised MOT tests and results, 2023–2025 extracts (96 million Class 4 initial tests; retests excluded). Only vehicles old enough for a routine first MOT are included. Age-adjusted figures compare the model-year cohort with all vehicles of the same registration year tested in the same calendar year. Contains public sector information licensed under OGL v3.0.