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Bmw M4 - 2015

69.0 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 M4, model year 2015. Sample size: 2,604 cars, 6,752 tests and 4,656 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 2,604 cars

The 2015 BMW M4 shows a significantly lower overall defect rate of 69 defects per 100 vehicles, compared to the average of 170 defects per 100 vehicles for the same year, marking a 59.5% improvement. It particularly excels in categories like brakes, steering, and visibility, where it shows much fewer issues than average. While it struggles with higher mileage ranges, defect rates generally increase with mileage for both the M4 and average vehicles, indicating a common trend. Overall, the M4's performance in essential areas is notably better, making it a reliable choice compared to its peers.

Cars by mileage segment

Total: 2,604 cars

More model years for Bmw M4

2014 2015 2016 2017 2018 2019 2020 2021 2022

Other models from Bmw

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Categories

Brakes
▲ 60.7% better
33.3 faults / 100 tests
Year avg: 84.7 / 100 tests
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake pipe damaged or excessively corroded
  • Excessive fluctuation in brake effort through each wheel revolution
  • Brake lining or pad: worn below 1.5mm
  • Brake disc or drum: significantly and obviously worn
Steering
▲ 92.9% better
0.7 faults / 100 tests
Year avg: 9.9 / 100 tests
  • 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.
  • Power steering fluid leaking or system malfunctioning
  • A steering linkage component: fractured or deformed
Visibility
▲ 59.0% better
6.6 faults / 100 tests
Year avg: 16.1 / 100 tests
  • Windscreen washers not working or not providing sufficient fluid to clear 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
  • Windscreen or window excessively tinted: but not adversely affecting driver’s view
  • Wiper blade: defective
Lights & Electrics
▲ 88.7% better
3.5 faults / 100 tests
Year avg: 31.0 / 100 tests
  • The aim of a headlamp is not within limits laid down in the requirements
  • Lamp: multiple light source up to a half not functioning
  • A rear registration plate lamp or light source missing or inoperative: when rear registration plate has only one lamp or all lamps not working
  • The aim of a headlamp is not within limits laid down in the requirements
  • 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
▲ 55.8% better
78.8 faults / 100 tests
Year avg: 178.3 / 100 tests
  • A spring: or spring component fractured or seriously weakened
  • 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
  • A spring: or spring component fractured or seriously weakened
  • Tyre tread depth not in accordance with the requirements
Body/Structure
▲ 92.3% better
0.9 faults / 100 tests
Year avg: 11.7 / 100 tests
  • A body or cab: insecure
  • Exhaust system has a major leak or is insecure
  • Exhaust system has a major leak or is insecure
  • A body panel or body component: likely to become detached
  • A transmission shaft constant velocity joint boot: severely deteriorated
Equipment
▲ 67.5% better
1.3 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
  • ESC MIL indicates a system malfunction
  • Audible warning:
  • Seat belt buckle missing, damaged or not functioning as intended
Other
▲ 4.5% better
12.6 faults / 100 tests
Year avg: 13.2 / 100 tests
  • Emissions levels exceed the manufacturer’s specified limits
  • 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
  • Exhaust noise levels in excess of those permitted

Fault rate by mileage segment

Model    Year average
0 342 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: 1,506
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 562
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 303
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 226
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 181
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 176
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 169
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 131
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 122
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 85

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 181
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 131
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 69
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 63
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 45
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 27
Emissions levels exceed the manufacturer’s specified limits
FAIL
Occurrences: 24
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 22
Warning device shows system malfunction
FAIL
Occurrences: 22
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 19