2019 Mazda CX-30 — MOT failures & pass rate
Across 956 MOT tests, the 2019 Mazda CX-30 recorded a 93.4% pass rate. Small SUVs of a similar age fail 9.0% of the time, so this is 2.4pp better than the group it competes with. Failures cluster in tyres, visibility and lighting & signalling.
What the MOT record shows
No single area dominates — tyres (2.7%) and visibility (2.6%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are wipers, headlamp aim and brake pads — wipers alone was recorded 22 times.
Tyres is the most common advisory, noted on 18.2% of tests — work that passed today but is likely due soon.
The trend is worsening — 2.4% of tests failed in 2022 against 11.3% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 2.7% | 26 |
| 2 | Visibility | 2.6% | 25 |
| 3 | Lighting & signalling | 1.8% | 17 |
| 4 | Brakes | 1.3% | 12 |
| 5 | Suspension | 0.8% | 8 |
| 6 | Emissions & environmental | 0.8% | 8 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 22 |
| 2 | Headlamp aim | 18 |
| 3 | Brake pads | 12 |
| 4 | Shock absorbers | 8 |
| 5 | Malfunction indicator lamp | 8 |
| 6 | Tread depth | 7 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 18.2% | 174 |
| 2 | Brakes | 16.7% | 160 |
| 3 | Suspension | 8.2% | 78 |
| 4 | Other defects | 6.9% | 66 |
| 5 | Visibility | 3.1% | 30 |
| 6 | Lighting & signalling | 0.2% | 2 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 648 | 4.5% |
| 30-60k | 286 | 10.1% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2022 | 213 | 2.4% |
| 2023 | 234 | 4.3% |
| 2024 | 252 | 7.5% |
| 2025 | 257 | 11.3% |
What to check before buying a 2019 CX-30
The failure pattern for this year is specific enough to inspect against: tyres accounted for 2.7% of tests. Start there.
- Tyres (2.7% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
- Visibility (2.6% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£150.
- Lighting & signalling (1.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2019 Mazda CX-30s pass their MOT?
93.4% of the 956 2019 Mazda CX-30 MOT tests in this dataset passed — a 6.6% fail rate.
What is the most common MOT failure on a 2019 Mazda CX-30?
Tyres, recorded in 2.7% of tests, followed by visibility (2.6%).
Does the 2019 CX-30 get worse with mileage?
Its MOT fail rate rises from 4.5% in the 0-30k band to 10.1% in the 30-60k band.
Methodology & source. Based on 956 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.