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Bmw Z4 - 2009

125.5 faults per 100 tests
Year average for all cars of 2009 is 311.0 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Bmw Z4, model year 2009. Sample size: 2,961 cars, 6,672 tests and 8,373 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 2,961 cars

The 2009 BMW Z4 demonstrates a significantly lower overall defect rate compared to the average car of the same year, with 125 defects per 100 vehicles versus 310. This model excels particularly in the areas of brakes, steering, and lights and electrics, showing much lower defect rates than the average. Notably, as mileage increases, the defect rate for the Z4 also rises, but it remains below the average across all mileage segments. While tyre wear is not highlighted as a standout issue, the Z4's performance in critical categories suggests a solid reliability compared to its peers.

Cars by mileage segment

Total: 2,961 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
▲ 45.6% better
63.9 faults / 100 tests
Year avg: 117.5 / 100 tests
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake hose ferrules: excessively corroded
  • Brake disc or drum: significantly and obviously worn
  • Brake lining or pad: worn below 1.5mm
  • Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
Steering
▲ 94.5% better
0.9 faults / 100 tests
Year avg: 16.3 / 100 tests
  • A steering ball joint: with excessive wear or free play
  • Free play in the steering, measured at the rim of the steering wheel is: excessive
  • 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.
  • A steering ball joint: with excessive wear or free play
Visibility
▲ 38.5% better
14.4 faults / 100 tests
Year avg: 23.4 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
  • Wiper blade: defective
  • Wiper blade: missing or obviously not clearing the windscreen
  • Wiper blade: missing or obviously not clearing the windscreen
  • Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 77.8% better
18.0 faults / 100 tests
Year avg: 80.9 / 100 tests
  • The aim of a headlamp is not within limits laid down in the requirements
  • A direction indicator: lamp with a multiple light source up to 1/2 not functioning
  • A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
  • 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
Wheels & Suspension
▲ 58.3% better
124.9 faults / 100 tests
Year avg: 299.8 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A suspension pin, bush, joint or bearing: excessively worn
  • A suspension component: excessively damaged or corroded
  • 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
▲ 88.4% better
4.8 faults / 100 tests
Year avg: 41.5 / 100 tests
  • Exhaust system has a major leak or is insecure
  • Fuel system: leaking, or missing or ineffective filler cap
  • Exhaust system has a major leak or is insecure
  • Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
  • A transmission shaft constant velocity joint boot: severely deteriorated
Equipment
▲ 62.7% better
3.1 faults / 100 tests
Year avg: 8.3 / 100 tests
  • A seat belt: webbing or flexible stalk significantly stretched or weakened
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • A seat belt:
  • ESC MIL indicates a system malfunction
  • A seat belt: or flexible stalk damaged
Other
▲ 39.2% better
20.9 faults / 100 tests
Year avg: 34.4 / 100 tests
  • Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
  • Emissions levels exceed the manufacturer’s specified limits
  • Lambda coefficient outside the default limits or the range specified by the manufacturer
  • Engine MIL inoperative or indicating a malfunction
  • Emissions levels exceed default limits

Fault rate by mileage segment

Model    Year average
0 454 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: 1,307
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 771
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 758
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 492
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 387
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 349
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 306
Brake hose ferrules: excessively corroded
ADVISORY
Occurrences: 222
Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
ADVISORY
Occurrences: 221
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 202

Serious faults (Top 10)

A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 163
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 148
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 93
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 83
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 81
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 62
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 60
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 56
Any fracture or welding defect on a wheel
FAIL
Occurrences: 51
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 45