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Bmw Z3 - 2003

222.4 faults per 100 tests
Year average for all cars of 2003 is 380.4 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Bmw Z3, model year 2003. Sample size: 100 cars, 201 tests and 447 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 100 cars

The 2003 BMW Z3 shows a significantly lower overall defect rate of 222 per 100 vehicles compared to the yearly average of 378 per 100, representing a 41% improvement. This model excels particularly in categories such as steering, visibility, and body structure, with defect rates well below the average. Notably, the defect rate tends to increase with mileage, especially in the higher mileage brackets. While tyre wear may be a concern, the Z3's performance in critical areas such as wheels and suspensions is also notably better than average, indicating a strong overall reliability for this model.

Cars by mileage segment

Total: 100 cars

More model years for Bmw Z3

1997 1998 1999 2000 2001 2002 2003

Other models from Bmw

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Categories

Brakes
▲ 10.1% better
152.2 faults / 100 tests
Year avg: 169.3 / 100 tests
  • Brake pipe damaged or excessively corroded
  • Brake hose ferrules: excessively corroded
  • Brake pipe damaged or excessively corroded
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Significant brake effort recorded with no brake applied indicating a binding brake
Steering
▲ 60.3% better
10.0 faults / 100 tests
Year avg: 25.2 / 100 tests
  • Power steering fluid leaking or system malfunctioning
  • Excessive wear or play in a universal joint or a flexible coupling excessively deteriorated
  • Power steering pipe, hose or wiring: excessively damaged or corroded
Visibility
▲ 76.5% better
7.0 faults / 100 tests
Year avg: 29.8 / 100 tests
  • Wiper blade: missing or obviously not clearing 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
Lights & Electrics
▲ 47.8% better
53.7 faults / 100 tests
Year avg: 102.8 / 100 tests
  • Lamp emitted colour, position or intensity not in accordance with the requirements
  • A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
  • Headlamp reflector or lens: slightly defective
  • 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
▲ 41.7% better
176.1 faults / 100 tests
Year avg: 302.1 / 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
  • A spring: or spring component fractured or seriously weakened
  • A suspension pin, bush, joint or bearing: excessively worn
  • A suspension component: excessively damaged or corroded
Body/Structure
▲ 66.4% better
21.9 faults / 100 tests
Year avg: 65.2 / 100 tests
  • 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
  • Fuel system: leaking, or missing or ineffective filler cap
  • Exhaust system has a major leak or is insecure
  • A transmission: joint, belt or chain excessively worn
Equipment
▲ 85.3% better
2.0 faults / 100 tests
Year avg: 13.6 / 100 tests
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
Other
▲ 58.4% better
21.9 faults / 100 tests
Year avg: 52.7 / 100 tests
  • 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
  • Emissions test unable to be completed

Fault rate by mileage segment

Model    Year average
0 538 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: 41
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 37
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 32
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 31
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 23
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 21
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 20
Lamp emitted colour, position or intensity not in accordance with the requirements
ADVISORY
Occurrences: 15
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 12
Significant brake effort recorded with no brake applied indicating a binding brake
ADVISORY
Occurrences: 10

Serious faults (Top 10)

Brake pipe damaged or excessively corroded
FAIL
Occurrences: 9
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 8
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 5
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 4
A tyre valve seriously damaged or misaligned likely to cause sudden deflation
FAIL
Occurrences: 4
Significant brake effort recorded with no brake applied indicating a binding brake
FAIL
Occurrences: 4
Service brake efficiency: below minimum requirement
FAIL
Occurrences: 3
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 3
A door will not open using the relevant control or close properly
FAIL
Occurrences: 2
Beam image obviously incorrect
FAIL
Occurrences: 2