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Bmw M340D - 2021

41.4 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 M340D, model year 2021. Sample size: 1,686 cars, 4,636 tests and 1,917 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 1,686 cars

The 2021 BMW M340D shows a significantly lower overall defect rate of 41 per 100 vehicles compared to the average of 79 per 100, marking a 47% improvement. This model particularly excels in categories like brakes and body structure, with defect rates much lower than the average. However, it has a higher incidence of issues related to steering and other unspecified defects. Mileage trends indicate that the defect rate increases with higher mileage, particularly in the 93,000 to 124,000 miles range, where it peaks at 314 defects per 100 vehicles. Overall, the M340D stands out positively in several areas, but some concerns remain, particularly as the mileage increases.

Cars by mileage segment

Total: 1,686 cars

More model years for Bmw M340D

2020 2021 2022

Other models from Bmw

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Categories

Brakes
▲ 85.8% better
5.7 faults / 100 tests
Year avg: 40.0 / 100 tests
  • Brake lining or pad: worn below 1.5mm
  • Excessive fluctuation in brake effort through each wheel revolution
  • Brake disc or drum: significantly and obviously worn
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Excessive fluctuation in brake effort through each wheel revolution
Steering
▼ 28.6% worse
0.9 faults / 100 tests
Year avg: 0.7 / 100 tests
  • Steering rack gaiter or ball joint dust cover: damaged or deteriorated
  • Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
Visibility
▲ 47.6% better
7.6 faults / 100 tests
Year avg: 14.5 / 100 tests
  • 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
  • Wiper blade: defective
  • Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 52.7% better
5.3 faults / 100 tests
Year avg: 11.2 / 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
  • Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
  • A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
  • A direction indicator: lamp with a multiple light source up to 1/2 not functioning
Wheels & Suspension
▲ 38.0% better
54.1 faults / 100 tests
Year avg: 87.3 / 100 tests
  • 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
  • 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
  • Tyre tread depth not in accordance with the requirements
Body/Structure
▲ 81.0% better
0.4 faults / 100 tests
Year avg: 2.1 / 100 tests
  • Fuel system: leaking, or missing or ineffective filler cap
  • A passenger seat: insecure
  • A body panel or body component: damaged or corroded and likely to cause injury when grazed or contacted, or insecure
  • A transmission shaft flexible coupling: excessively deteriorated
  • A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
Equipment
▲ 80.0% better
0.3 faults / 100 tests
Year avg: 1.5 / 100 tests
  • Seat belt buckle missing, damaged or not functioning as intended
  • Seat belt buckle missing, damaged or not functioning as intended
Other
▼ 203.7% worse
8.2 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
  • Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users

Fault rate by mileage segment

Model    Year average
0 314 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: 664
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 194
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 151
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 108
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 93
The aim of a headlamp is not within limits laid down in the requirements
PRS
Occurrences: 79
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 75
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 57
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 56
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 55

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 194
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 93
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 56
A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 21
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 20
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 16
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 14
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 13
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 8
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 8