Bmw 520 - 2015
104.6 faults per 100 tests
Year average for all cars of 2015 is 174.5 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Bmw 520, model year 2015.
Sample size: 13,333 cars, 28,043 tests and 29,330 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: 13,333 cars
The 2015 BMW 520 has an overall defect rate of 105 per 100 vehicles, which is significantly better than the average of 170 per 100 vehicles from the same year, marking a 39% improvement. Mileage-related trends show that defect rates increase with higher mileage, particularly in the 31,000 to 62,000 miles range. Notably, the BMW 520 excels in several categories, such as brakes and steering, where it has much lower defect rates compared to the average. Additionally, issues related to lights and electrics, as well as body structure, are minimal in this model, further highlighting its reliability. Overall, this model stands out positively in multiple critical areas.
Cars by mileage segment
Total: 13,333 cars
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Categories
Brakes
▲ 29.3% better
59.9 faults / 100 tests
Year avg: 84.7 / 100 tests
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake disc or drum: significantly and obviously worn
- Brake lining or pad: worn below 1.5mm
- Brake lining or pad: worn below 1.5mm
- Brake pipe damaged or excessively corroded
Steering
▲ 82.8% better
1.7 faults / 100 tests
Year avg: 9.9 / 100 tests
- 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
- 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.
Visibility
▲ 15.5% better
13.6 faults / 100 tests
Year avg: 16.1 / 100 tests
- Wiper blade: missing or obviously not clearing the windscreen
- 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
- Wiper blade: defective
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 76.5% better
7.3 faults / 100 tests
Year avg: 31.0 / 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 lens defective: which has no effect on emitted light
- Headlamp cleaning device: inoperative in the case of LED or gas discharge systems (HID)
- Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
Wheels & Suspension
▲ 33.5% better
118.6 faults / 100 tests
Year avg: 178.3 / 100 tests
- A suspension pin, bush, joint or bearing: excessively worn
- Tyre tread depth not in accordance with the requirements
- 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 lump, bulge or tear … or with cords exposed or damaged
Body/Structure
▲ 88.0% better
1.4 faults / 100 tests
Year avg: 11.7 / 100 tests
- Exhaust system has a major leak or is insecure
- An engine mounting or bracket: severely damaged or deteriorated resulting in excessive movement
- A transmission shaft flexible coupling: excessively deteriorated
- A transmission shaft constant velocity joint boot: severely deteriorated
- A door will not open using the relevant control or close properly
Equipment
▲ 62.5% better
1.5 faults / 100 tests
Year avg: 4.0 / 100 tests
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- A seat belt: or flexible stalk damaged
- A seat belt:
- Seat belt buckle missing, damaged or not functioning as intended
Other
▲ 61.4% better
5.1 faults / 100 tests
Year avg: 13.2 / 100 tests
- Smoke opacity levels exceed the manufacturer’s specified limit
- 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
- 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: 8,387
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 2,767
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 2,673
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 1,244
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 1,242
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 1,039
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 765
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 742
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 720
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 665
Serious faults (Top 10)
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 742
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 720
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 380
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 340
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 301
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 280
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 256
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 204
A wheel: with a loose or missing wheel nut, bolt or stud
FAIL
Occurrences: 196
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 172