Mazda CX-30 - 2020
95.8 faults per 100 tests
Year average for all cars of 2020 is 91.3 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mazda CX-30, model year 2020.
Sample size: 6,543 cars, 13,194 tests and 12,646 recorded faults.
0%
More faults compared to the average car of same model year
More faults compared to the average car of same model year
Quick summary
Total: 6,543 cars
The 2020 Mazda CX-30 has an overall defect rate of 96 per 100 vehicles, which is 7% higher than the average for cars of the same year. It shows significant improvement in categories such as steering, lights and electrics, and body structure, where its defect rates are markedly lower than the average. However, it performs worse in the brakes category, with a defect rate of 77, compared to the average of 49. Mileage trends indicate that defect rates increase with mileage, particularly in the higher mileage brackets. Overall, while the CX-30 excels in several key areas, attention should be paid to its braking performance.
Cars by mileage segment
Total: 6,543 cars
More model years for Mazda CX-30
Other models from Mazda
Categories
Brakes
▼ 52.2% worse
77.3 faults / 100 tests
Year avg: 50.8 / 100 tests
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake disc or drum: significantly and obviously worn
- Excessive fluctuation in brake effort through each wheel revolution
- Brake lining or pad: worn below 1.5mm
- Brake lining or pad: worn below 1.5mm
Steering
▲ 73.3% better
0.4 faults / 100 tests
Year avg: 1.5 / 100 tests
- A steering ball joint: with excessive wear or free play
- Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
- Free play in the steering, measured at the rim of the steering wheel is: excessive
- A steering ball joint: with excessive wear or free play
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▼ 2.8% worse
14.5 faults / 100 tests
Year avg: 14.1 / 100 tests
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Wiper blade: missing or obviously not clearing the windscreen
- Wiper blade: defective
- Wiper blade: missing or obviously not clearing the windscreen
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 68.8% better
3.5 faults / 100 tests
Year avg: 11.2 / 100 tests
- The aim of a headlamp is not within limits laid down in the requirements
- The aim of a headlamp is not within limits laid down in the requirements
- A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
- A battery insecure: but not likely to fall from carrier
- Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
Wheels & Suspension
▲ 3.8% better
93.8 faults / 100 tests
Year avg: 97.5 / 100 tests
- A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
- Tyre tread depth not in accordance with the requirements
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
- A shock absorber damaged … or showing signs of severe leakage
Body/Structure
▲ 87.5% better
0.3 faults / 100 tests
Year avg: 2.4 / 100 tests
- Exhaust system has a major leak or is insecure
- A main load-bearing structural member: fractured or deformed such that structural rigidity is significantly reduced
- A transmission shaft constant velocity joint boot: severely deteriorated
- A transmission: joint, belt or chain excessively worn
- Bumper: insecure or with damage likely to cause injury when grazed or contacted
Equipment
▲ 66.7% better
0.5 faults / 100 tests
Year avg: 1.5 / 100 tests
- A seat belt:
- ESC MIL indicates a system malfunction
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- A seat belt: or flexible stalk damaged
- Seat belt not functioning as intended or of an incorrect type
Other
▲ 67.6% better
1.2 faults / 100 tests
Year avg: 3.7 / 100 tests
- Engine MIL inoperative or indicating a malfunction
- Engine MIL inoperative or indicating a malfunction
- Emissions levels exceed default limits
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Lambda coefficient outside the default limits or the range specified by the manufacturer
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 2,826
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 2,450
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 1,740
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 1,306
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 1,022
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 510
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 399
Wiper blade: defective
MINOR
Occurrences: 287
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 203
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 182
Serious faults (Top 10)
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 182
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 163
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 129
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 126
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 83
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 57
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 46
Brake disc or drum: significantly and obviously worn
FAIL
Occurrences: 39
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 29
Brake disc or drum: insecure, fractured or otherwise likely to fail
FAIL
Occurrences: 14