Bmw 330 - 2020
59.2 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 Bmw 330, model year 2020.
Sample size: 10,721 cars, 23,783 tests and 14,089 recorded faults.
0%
Less faults compared to the average car of same model year
Less faults compared to the average car of same model year
Quick summary
Total: 10,721 cars
The 2020 BMW 330 shows a significantly lower overall defect rate of 59 defects per 100 vehicles, compared to the average of 90 defects for cars of the same year, marking a 34% improvement. This model excels particularly in brake issues, with only 7 defects per 100 vehicles compared to the average of 49, and it also performs better in visibility and lights and electrics categories. Mileage-related trends indicate that the defect rate slightly increases with higher mileage, but the BMW 330 maintains a relatively low defect count across all mileage ranges. Overall, this model stands out for its reliability, especially in critical areas like brakes and body/structure.
Cars by mileage segment
Total: 10,721 cars
More model years for Bmw 330
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Bmw Z4
Categories
Brakes
▲ 85.6% better
7.3 faults / 100 tests
Year avg: 50.8 / 100 tests
- Brake lining or pad: worn below 1.5mm
- Brake disc or drum: significantly and obviously worn
- Parking brake control missing, defective or inoperative
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Excessive fluctuation in brake effort through each wheel revolution
Steering
▼ 6.7% worse
1.6 faults / 100 tests
Year avg: 1.5 / 100 tests
- Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
- A steering ball joint: with excessive wear or free play
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
- A steering ball joint: with excessive wear or free play
- A steering ball joint: with excessive wear or free play
Visibility
▲ 33.3% better
9.4 faults / 100 tests
Year avg: 14.1 / 100 tests
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
- Wiper blade: defective
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 60.7% better
4.4 faults / 100 tests
Year avg: 11.2 / 100 tests
- A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
- Electrical wiring insulation: damaged or deteriorated
- 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 lens defective: which has no effect on emitted light
Wheels & Suspension
▲ 5.9% better
91.7 faults / 100 tests
Year avg: 97.5 / 100 tests
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A suspension pin, bush, joint or bearing: excessively worn
- 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
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 body panel or body component: damaged or corroded and likely to cause injury when grazed or contacted, or insecure
- A door will not open using the relevant control or close properly
- A transmission shaft constant velocity joint boot: severely deteriorated
- A body panel or body component: damaged or corroded and likely to cause injury when grazed or contacted, or insecure
Equipment
▲ 26.7% better
1.1 faults / 100 tests
Year avg: 1.5 / 100 tests
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- Seat belt not functioning as intended or of an incorrect type
- Seat belt buckle missing, damaged or not functioning as intended
- A seat belt:
- Seat belt buckle missing, damaged or not functioning as intended
Other
▲ 32.4% better
2.5 faults / 100 tests
Year avg: 3.7 / 100 tests
- Engine MIL inoperative or indicating a malfunction
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Engine MIL inoperative or indicating a malfunction
- Emissions levels exceed default limits
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: 5,844
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 1,045
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 877
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 559
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 538
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 534
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 527
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 519
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 317
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 288
Serious faults (Top 10)
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 877
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 538
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 527
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 229
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 138
A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 83
Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 65
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 56
A wheel: with a loose or missing wheel nut, bolt or stud
FAIL
Occurrences: 54
Any fracture or welding defect on a wheel
FAIL
Occurrences: 51