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Bmw Z4 - 2015

84.6 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 Z4, model year 2015. Sample size: 1,824 cars, 4,221 tests and 3,573 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 1,824 cars

The 2015 BMW Z4 has a significantly lower overall defect rate of 85 defects per 100 vehicles compared to the average of 170 defects per 100 vehicles, indicating it performs better by 50%. Notable improvements can be seen in categories such as brakes and steering, where the Z4's defect rates are substantially lower than the average. In terms of mileage-related trends, the defect rates increase with higher mileage, particularly exceeding 124,000 miles, where it rises to 340 defects per 100 vehicles. Overall, the Z4 stands out positively in various categories, particularly in braking and steering, reflecting its reliability in these areas.

Cars by mileage segment

Total: 1,824 cars

More model years for Bmw Z4

2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2019 2020 2021 2022

Other models from Bmw

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Categories

Brakes
▲ 47.5% better
44.5 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
▲ 97.0% better
0.3 faults / 100 tests
Year avg: 9.9 / 100 tests
  • Excessive radial movement between the top of the steering column and the shaft indicating an excessively worn top bearing
  • Electronic power assistance not working
  • EPS MIL indicating a system malfunction
  • A steering linkage component: with an unsafe modification
  • Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 47.2% better
8.5 faults / 100 tests
Year avg: 16.1 / 100 tests
  • Windscreen washers not working or not providing sufficient fluid to clear the windscreen
  • 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: defective
  • Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 79.7% better
6.3 faults / 100 tests
Year avg: 31.0 / 100 tests
  • Stop lamp(s): with a multiple light source up to 1/2 not functioning
  • Headlamp cleaning device: inoperative in the case of LED or gas discharge systems (HID)
  • A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
  • The aim of a headlamp is not within limits laid down in the requirements
  • Headlamp levelling device inoperative
Wheels & Suspension
▲ 42.8% better
101.9 faults / 100 tests
Year avg: 178.3 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • 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 lump, bulge or tear … or with cords exposed or damaged
  • A shock absorber damaged … or showing signs of severe leakage
Body/Structure
▲ 95.7% better
0.5 faults / 100 tests
Year avg: 11.7 / 100 tests
  • Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
  • A body panel or body component: damaged or corroded and likely to cause injury when grazed or contacted, or insecure
  • Exhaust system has a major leak or is insecure
  • A main load-bearing structural member: fractured or deformed such that structural rigidity is significantly reduced
Equipment
▲ 65.0% better
1.4 faults / 100 tests
Year avg: 4.0 / 100 tests
  • A seat belt:
  • ESC MIL indicates a system malfunction
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • A seat belt: webbing or flexible stalk significantly stretched or weakened
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
Other
▲ 54.5% better
6.0 faults / 100 tests
Year avg: 13.2 / 100 tests
  • Engine MIL inoperative or indicating a malfunction
  • Lambda coefficient outside the default limits or the range specified by the manufacturer
  • Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
  • Any part of the noise suppression system: insecure
  • Emissions test unable to be completed

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: 814
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 492
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 458
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 244
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 158
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 117
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 108
Any fracture or welding defect on a wheel
FAIL
Occurrences: 105
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 86
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 72

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 158
Any fracture or welding defect on a wheel
FAIL
Occurrences: 105
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 67
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 67
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 51
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 35
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 28
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 20
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 20
Headlamp cleaning device: inoperative in the case of LED or gas discharge systems (HID)
FAIL
Occurrences: 12