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Bmw X4 - 2020

55.9 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 X4, model year 2020. Sample size: 2,418 cars, 5,692 tests and 3,181 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 2,418 cars

The 2020 BMW X4 exhibits a significantly lower overall defect rate of 56 defects per 100 vehicles, which is 38% better than the average for its year, recorded at 90 defects per 100 vehicles. The model shows remarkable performance in several categories, particularly in brakes, where it has only 13 defects per 100 compared to the average of 49, and in steering, where defects are almost negligible at 0.14 per 100 vehicles. Additionally, it performs better than average in visibility, lights and electrics, and body structure. However, the mileage trends indicate that defect rates increase with higher mileage, particularly surpassing 300 defects per 100 vehicles in the highest mileage category. Overall, the BMW X4 stands out for its reliability in critical areas compared to its peers.

Cars by mileage segment

Total: 2,418 cars

Categories

Brakes
▲ 74.0% better
13.2 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
  • Excessive fluctuation in brake effort through each wheel revolution
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake lining or pad: worn below 1.5mm
Steering
▲ 93.3% better
0.1 faults / 100 tests
Year avg: 1.5 / 100 tests
  • Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 22.7% better
10.9 faults / 100 tests
Year avg: 14.1 / 100 tests
  • Wiper blade: defective
  • Wiper blade: missing or obviously not clearing the windscreen
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
  • Wiper blade: missing or obviously not clearing the windscreen
  • Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 55.4% better
5.0 faults / 100 tests
Year avg: 11.2 / 100 tests
  • A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
  • Lamp: multiple light source up to a half not functioning
  • 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
  • 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
Wheels & Suspension
▲ 18.9% better
79.1 faults / 100 tests
Year avg: 97.5 / 100 tests
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • Tyre tread depth not in accordance with the requirements
  • Tyre tread depth not in accordance with the requirements
  • 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
Body/Structure
▲ 83.3% better
0.4 faults / 100 tests
Year avg: 2.4 / 100 tests
  • A transmission shaft flexible coupling: excessively deteriorated
  • A transmission shaft constant velocity joint boot: severely deteriorated
Equipment
▲ 60.0% better
0.6 faults / 100 tests
Year avg: 1.5 / 100 tests
  • Seat belt buckle missing, damaged or not functioning as intended
  • Audible warning:
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • A seat belt: webbing or flexible stalk significantly stretched or weakened
  • A seat belt:
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
  • Lambda coefficient outside the default limits or the range specified by the manufacturer
  • Engine MIL inoperative or indicating a malfunction
  • Engine MIL inoperative or indicating a malfunction

Fault rate by mileage segment

Model    Year average
0 350 0–31,000 mi 31,000–62,000 62,000–93,000 93,000–124,000 124,000+
* Metric: faults per 100 tests.

Most common faults (Top 10)

Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 1,438
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 291
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 198
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 129
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 94
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 91
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 89
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 87
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 82
Wiper blade: defective
MINOR
Occurrences: 76

Serious faults (Top 10)

Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 89
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 87
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 82
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 53
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 26
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 21
A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 17
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 13
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 13
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 12