Bmw M5 - 2021
32.4 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 M5, model year 2021.
Sample size: 167 cars, 414 tests and 134 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: 167 cars
The 2021 BMW M5 exhibits a significantly lower overall defect rate compared to the average car of the same year, with 32 defects per 100 vehicles versus 79 on average, representing a 59% improvement. This model performs exceptionally well in categories such as brakes, steering, and visibility, where its defect rates are considerably lower than average. However, it does show some weaknesses in the body structure category, which is notably worse than the average. Mileage trends indicate that defects are less frequent in the lower mileage range of this model compared to the average vehicle, particularly between 0 and 62,000 miles. Overall, the BMW M5 stands out as a reliable choice in many key areas, despite some isolated concerns.
Cars by mileage segment
Total: 167 cars
More model years for Bmw M5
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Categories
Brakes
▲ 92.8% better
2.9 faults / 100 tests
Year avg: 40.0 / 100 tests
- Brake lining or pad: worn below 1.5mm
- Brake disc or drum: significantly and obviously worn
Steering
▲ 100.0% better
0.0 faults / 100 tests
Year avg: 0.7 / 100 tests
Visibility
▲ 76.6% better
3.4 faults / 100 tests
Year avg: 14.5 / 100 tests
- Wiper blade: defective
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
Lights & Electrics
▲ 87.5% better
1.4 faults / 100 tests
Year avg: 11.2 / 100 tests
- The aim of a headlamp is not within limits laid down in the requirements
Wheels & Suspension
▲ 40.2% better
52.2 faults / 100 tests
Year avg: 87.3 / 100 tests
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- Any fracture or welding defect on a wheel
- A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
- 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
Body/Structure
▼ 61.9% worse
3.4 faults / 100 tests
Year avg: 2.1 / 100 tests
- Fuel system: leaking, or missing or ineffective filler cap
- A transmission shaft flexible coupling: excessively deteriorated
- A transmission shaft flexible coupling: excessively deteriorated
Equipment
▲ 66.7% better
0.5 faults / 100 tests
Year avg: 1.5 / 100 tests
- ESC MIL indicates a system malfunction
Other
▲ 63.0% better
1.0 faults / 100 tests
Year avg: 2.7 / 100 tests
- Lambda coefficient outside the default limits or the range specified by the manufacturer
- 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: 47
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 23
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 12
Any fracture or welding defect on a wheel
FAIL
Occurrences: 9
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 7
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 5
A transmission shaft flexible coupling: excessively deteriorated
ADVISORY
Occurrences: 5
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 5
Wiper blade: defective
MINOR
Occurrences: 4
The aim of a headlamp is not within limits laid down in the requirements
PRS
Occurrences: 3
Serious faults (Top 10)
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 23
Any fracture or welding defect on a wheel
FAIL
Occurrences: 9
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 7
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 3
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 2
ESC MIL indicates a system malfunction
FAIL
Occurrences: 1
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 1
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 1
A transmission shaft flexible coupling: excessively deteriorated
FAIL
Occurrences: 1
Fuel system: leaking, or missing or ineffective filler cap
FAIL
Occurrences: 1