2021 Mazda Cx-30 MOT pass rate: 94.3% (3,647 tests)
Is the 2021 Cx-30 getting worse?
Pass rate of 2021-registered cars across recent test years:
| Test year | Pass rate | |
|---|---|---|
| 2024 | 95.2% +4.6 vs same-age |
|
| 2025 | 93.4% +3.2 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 Cx-30
| # | System | Defects recorded | Share |
|---|---|---|---|
| 1 | Tyres | 121 | 39.9% |
| 2 | Brakes | 83 | 27.4% |
| 3 | Suspension | 27 | 8.9% |
| 4 | Visibility | 25 | 8.3% |
| 5 | Lamps, reflectors and electrical equipment | 18 | 5.9% |
| 6 | Noise, emissions and leaks | 17 | 5.6% |
All Cx-30 years compared
| Registration year | Tests | Pass rate | Vs same-age | Median mileage |
|---|---|---|---|---|
| 2020 | 3,469 | 93.0% | +3.1 pts | 25,198 |
| 2021 (this page) | 3,647 | 94.3% | +3.9 pts | 25,150 |
- Free MOT history checkThe exact car’s failures, advisories and mileage trail — sellers can’t edit it
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FAQs
Is a 2021 Mazda Cx-30 reliable?
2021-registered examples passed 94.3% of their MOT tests (3,647 tests, 2023–2025), +3.9 points versus all UK cars registered in the same year. At roughly 5 years old with a median 25,150 miles, condition now varies car by car — always check the individual MOT history.
What mileage is too high for a 2021 Cx-30?
The median tested example shows 25,150 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.