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Bmw Z4 - 2004

275.7 faults per 100 tests
Year average for all cars of 2004 is 384.6 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Bmw Z4, model year 2004. Sample size: 3,578 cars, 8,143 tests and 22,452 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 3,578 cars

The 2004 BMW Z4 exhibits an overall defect rate of 276 per 100 vehicles, which is 28% lower than the average for cars of the same year. Notably, the Z4 performs exceptionally well in several categories, particularly in steering, where it has only 4% of vehicles failing compared to 25% on average, and in body structure defects, with a failure rate of just 10% versus 62%. Additionally, as mileage increases, the defect rate for the Z4 rises more gradually than the average, indicating a potentially better long-term reliability. While tyre wear is not specifically highlighted, the model's overall performance in various defect categories suggests it has strengths in key areas compared to its peers.

Cars by mileage segment

Total: 3,578 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

Bmw 114 Bmw 116 Bmw 118 Bmw 120 Bmw 123 Bmw 125 Bmw 216 Bmw 218 Bmw 220 Bmw 316 Bmw 318 Bmw 320 Bmw 330 Bmw 335 Bmw 418 Bmw 420 Bmw 428 Bmw 430 Bmw 435 Bmw 440 Bmw 518 Bmw 520 Bmw 523 Bmw 525 Bmw 528 Bmw 530 Bmw 535 Bmw 630 Bmw 640 Bmw 645 Bmw 650 Bmw 728 Bmw 730 Bmw 740 Bmw 840 Bmw ALPINA Bmw I3 Bmw I4 Bmw IX3 Bmw M2 Bmw M3 Bmw M340D Bmw M4 Bmw M5 Bmw M6 Bmw X1 Bmw X2 Bmw X3 Bmw X4 Bmw X5 Bmw X6 Bmw X7 Bmw Z3 Bmw Z4

Categories

Brakes
▼ 12.4% worse
184.5 faults / 100 tests
Year avg: 164.2 / 100 tests
  • Brake pipe damaged or excessively corroded
  • Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
  • Brake pipe damaged or excessively corroded
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake lining or pad: worn below 1.5mm
Steering
▲ 82.7% better
4.3 faults / 100 tests
Year avg: 24.9 / 100 tests
  • Free play in the steering, measured at the rim of the steering wheel is: excessive
  • 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
  • A steering ball joint: with excessive wear or free play
  • Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 37.5% better
18.3 faults / 100 tests
Year avg: 29.3 / 100 tests
  • 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
  • Wiper blade: missing or obviously not clearing the windscreen
  • Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 48.1% better
57.0 faults / 100 tests
Year avg: 109.9 / 100 tests
  • Headlamp reflector or lens: slightly defective
  • A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
  • Beam image obviously incorrect
  • Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow
  • The aim of a headlamp is not within limits laid down in the requirements
Wheels & Suspension
▲ 28.2% better
224.8 faults / 100 tests
Year avg: 312.9 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A suspension component: excessively damaged or corroded
  • A spring: or spring component fractured or seriously weakened
  • A suspension pin, bush, joint or bearing: excessively worn
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
Body/Structure
▲ 84.0% better
10.2 faults / 100 tests
Year avg: 63.6 / 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 door will not open using the relevant control or close properly
Equipment
▲ 15.9% better
11.6 faults / 100 tests
Year avg: 13.8 / 100 tests
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • ESC MIL indicates a system malfunction
  • Audible warning:
Other
▲ 19.6% better
40.6 faults / 100 tests
Year avg: 50.5 / 100 tests
  • 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
  • Lambda coefficient outside the default limits or the range specified by the manufacturer
  • Emissions levels exceed default limits

Fault rate by mileage segment

Model    Year average
0 533 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)

Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 3,135
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 1,904
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 1,815
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 1,294
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 1,253
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 1,034
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 1,030
Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
ADVISORY
Occurrences: 674
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 652
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 519

Serious faults (Top 10)

A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 470
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 358
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 247
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 161
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 159
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 143
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 133
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 128
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 123
Beam image obviously incorrect
FAIL
Occurrences: 122