Porsche BOXSTER - 2004
182.4 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 Porsche BOXSTER, model year 2004.
Sample size: 2,412 cars, 5,484 tests and 10,003 recorded faults.
0%
Less faults compared to the average car of same model year
Less faults compared to the average car of same model year
Quick summary
Total: 2,412 cars
The 2004 Porsche Boxster exhibits a significantly lower overall defect rate compared to the average car of the same year, with 182 defects per 100 vehicles compared to the average of 382. Notably, it performs particularly well in categories such as steering, visibility, and body structure, where defect rates are markedly lower than average. In terms of mileage, defect rates tend to rise with increased mileage, with the highest defects observed in vehicles over 124,000 miles. Overall, the Boxster stands out as a reliable model with fewer common issues compared to its peers, particularly in critical areas of performance and safety.
Cars by mileage segment
Total: 2,412 cars
Categories
Brakes
▲ 16.3% better
137.4 faults / 100 tests
Year avg: 164.2 / 100 tests
- Brake pipe damaged or excessively corroded
- Brake pipe damaged or excessively corroded
- Brake lining or pad: worn below 1.5mm
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake disc or drum: significantly and obviously worn
Steering
▲ 75.1% better
6.2 faults / 100 tests
Year avg: 24.9 / 100 tests
- Power steering pipe, hose or wiring: excessively damaged or corroded
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
- A steering ball joint: with excessive wear or free play
- A steering ball joint: with excessive wear or free play
- Power steering fluid leaking or system malfunctioning
Visibility
▲ 60.4% better
11.6 faults / 100 tests
Year avg: 29.3 / 100 tests
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
- Wiper blade: defective
Lights & Electrics
▲ 56.3% better
48.0 faults / 100 tests
Year avg: 109.9 / 100 tests
- A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
- Lamp emitted colour, position or intensity not in accordance with the requirements
- Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow
- Headlamp reflector or lens: slightly defective
- Beam image obviously incorrect
Wheels & Suspension
▲ 64.3% better
111.6 faults / 100 tests
Year avg: 312.9 / 100 tests
- Tyre tread depth not in accordance with the requirements
- A suspension pin, bush, joint or bearing: excessively worn
- A shock absorber damaged … or showing signs of severe leakage
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A suspension component: excessively damaged or corroded
Body/Structure
▲ 73.9% better
16.6 faults / 100 tests
Year avg: 63.6 / 100 tests
- Exhaust system has a major leak or is insecure
- A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
- Exhaust system has a major leak or is insecure
- A transmission shaft constant velocity joint boot: severely deteriorated
- Fuel system: leaking, or missing or ineffective filler cap
Equipment
▲ 86.2% better
1.9 faults / 100 tests
Year avg: 13.8 / 100 tests
- Audible warning:
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- is significantly reduced or The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a ’prescribed area’): inadequately repaired
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
Other
▲ 37.6% better
31.5 faults / 100 tests
Year avg: 50.5 / 100 tests
- Lambda coefficient outside the default limits or the range specified by the manufacturer
- Emissions levels exceed default limits
- 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
- Emissions levels exceed the manufacturer’s specified limits
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 1,878
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 1,047
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 888
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 639
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 434
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 349
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 276
Exhaust system has a major leak or is insecure
ADVISORY
Occurrences: 245
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 206
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 203
Serious faults (Top 10)
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 276
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 206
Beam image obviously incorrect
FAIL
Occurrences: 107
A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
FAIL
Occurrences: 101
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 101
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 82
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 79
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 68
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 65
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 65