2020 Mazda Cx-30 -L Lux Mhev Auto — MOT failures & pass rate
Across 884 MOT tests analysed for the 2020 Mazda Cx-30 -L Lux Mhev Auto, the most common recorded failure areas were visibility, tyres and lighting & signalling. Its pass rate of 94.9% was above the average for cars of a similar age (90.6%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Visibility | 2.7% | 24 |
| 2 | Tyres | 1.7% | 15 |
| 3 | Lighting & signalling | 1.2% | 11 |
| 4 | Brakes | 1.0% | 9 |
| 5 | Suspension | 0.8% | 7 |
| 6 | Emissions & environmental | 0.3% | 3 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 17 |
| 2 | Headlamp aim | 11 |
| 3 | Brake pads | 8 |
| 4 | Tread depth | 8 |
| 5 | Washers | 8 |
| 6 | Shock absorbers | 6 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 17.0% | 150 |
| 2 | Tyres | 15.6% | 138 |
| 3 | Other defects | 6.0% | 53 |
| 4 | Suspension | 5.5% | 49 |
| 5 | Visibility | 2.3% | 20 |
| 6 | Lighting & signalling | 0.3% | 3 |
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 | 616 | 3.6% |
| 30-60k | 251 | 8.4% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 296 | 3.7% |
| 2024 | 286 | 5.6% |
| 2025 | 294 | 6.1% |
What to check before buying a 2020 Cx-30 -L Lux Mhev Auto
Before buying a 2020 Mazda Cx-30 -L Lux Mhev Auto, focus on the areas it most often fails on. Visibility accounted for 2.7% of tests for this year.
- Visibility (2.7% 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.
- Tyres (1.7% 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.
- Lighting & signalling (1.2% 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 2020 Mazda Cx-30 -L Lux Mhev Autos pass their MOT?
94.9% of the 884 2020 Mazda Cx-30 -L Lux Mhev Auto MOT tests in this dataset passed — a 5.1% fail rate.
What is the most common MOT failure on a 2020 Mazda Cx-30 -L Lux Mhev Auto?
Visibility, recorded in 2.7% of tests, followed by tyres (1.7%).
Does the 2020 Cx-30 -L Lux Mhev Auto get worse with mileage?
Its MOT fail rate rises from 3.6% in the 0-30k band to 8.4% in the 30-60k band.
Methodology & source. Based on 884 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.