Bmw 320 - 2021
56.4 faults per 100 tests
Year average for all cars of 2021 is 80.0 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Bmw 320, model year 2021.
Sample size: 8,779 cars, 21,210 tests and 11,954 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: 8,779 cars
The 2021 BMW 320 has a defect rate of 56 per 100 vehicles, which is significantly lower than the average of 79 per 100 for cars of the same year, marking a 28% improvement. This model shows particularly strong performance in areas such as brakes and body structure, where defect rates are much lower than average, indicating better reliability. Mileage-related trends reveal that as mileage increases, defect rates for the BMW 320 also rise, but they remain relatively low compared to average figures across all mileage segments. Overall, this model stands out positively in several categories, demonstrating a solid overall reliability compared to its peers.
Cars by mileage segment
Total: 8,779 cars
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Categories
Brakes
▲ 49.0% better
20.4 faults / 100 tests
Year avg: 40.0 / 100 tests
- Brake lining or pad: worn below 1.5mm
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Excessive fluctuation in brake effort through each wheel revolution
- Brake disc or drum: significantly and obviously worn
- Brake lining or pad: worn below 1.5mm
Steering
▲ 28.6% better
0.5 faults / 100 tests
Year avg: 0.7 / 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
- Free play in the steering, measured at the rim of the steering wheel is: excessive
Visibility
▲ 55.9% better
6.4 faults / 100 tests
Year avg: 14.5 / 100 tests
- Wiper blade: defective
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- 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
Lights & Electrics
▲ 52.7% better
5.3 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
- An obligatory rear fog lamp missing, or a front or rear fog lamp inoperative or in the case of a multiple light source more than 1/2 not functioning
- 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
▲ 11.5% better
77.3 faults / 100 tests
Year avg: 87.3 / 100 tests
- 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 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
▲ 85.7% better
0.3 faults / 100 tests
Year avg: 2.1 / 100 tests
- Exhaust system has a major leak or is insecure
- An engine mounting or bracket: severely damaged or deteriorated resulting in excessive movement
- An engine mounting or bracket: severely damaged or deteriorated resulting in excessive movement
- A body panel or body component: damaged or corroded and likely to cause injury when grazed or contacted, or insecure
- A body panel or body component: damaged or corroded and likely to cause injury when grazed or contacted, or insecure
Equipment
▲ 33.3% better
1.0 faults / 100 tests
Year avg: 1.5 / 100 tests
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- Seat belt buckle missing, damaged or not functioning as intended
- A seat belt:
- Seat belt buckle missing, damaged or not functioning as intended
Other
▲ 48.1% better
1.4 faults / 100 tests
Year avg: 2.7 / 100 tests
- 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
- Engine MIL inoperative or indicating a malfunction
- Engine MIL inoperative or indicating a malfunction
- Engine MIL inoperative or indicating a malfunction
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: 4,345
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 1,404
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 1,018
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 694
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 526
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 516
The aim of a headlamp is not within limits laid down in the requirements
PRS
Occurrences: 394
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 314
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 294
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 263
Serious faults (Top 10)
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 694
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 526
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 314
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 154
A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 72
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 67
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 63
Seat belt buckle missing, damaged or not functioning as intended
FAIL
Occurrences: 51
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 44
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 42