Porsche BOXSTER - 2005
175.4 faults per 100 tests
Year average for all cars of 2005 is 377.4 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Porsche BOXSTER, model year 2005.
Sample size: 3,920 cars, 9,088 tests and 15,941 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: 3,920 cars
The 2005 Porsche Boxster has a significantly lower overall defect rate compared to the average car of the same year, with 175 defects per 100 vehicles, which is 53% better than the average of 376 defects per 100. While the model experiences higher defect rates as mileage increases, especially over 124,000 miles, it excels in several categories including steering, visibility, and lights and electrics, where its defect rates are markedly lower than average. Notably, the Boxster stands out for its excellent performance in body structure and equipment defects, making it a reliable choice in these areas. Overall, this model demonstrates a robust reliability profile compared to its peers.
Cars by mileage segment
Total: 3,920 cars
Categories
Brakes
▲ 15.0% better
134.8 faults / 100 tests
Year avg: 158.5 / 100 tests
- Brake pipe damaged or excessively corroded
- Brake disc or drum: significantly and obviously worn
- Brake lining or pad: worn below 1.5mm
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake pipe damaged or excessively corroded
Steering
▲ 62.9% better
8.3 faults / 100 tests
Year avg: 22.4 / 100 tests
- A steering ball joint: with excessive wear or free play
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
- A steering ball joint: with excessive wear or free play
- Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
- Power steering fluid leaking or system malfunctioning
Visibility
▲ 63.7% better
10.3 faults / 100 tests
Year avg: 28.4 / 100 tests
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Wiper blade: missing or obviously not clearing the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
- Wiper blade: defective
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 65.5% better
38.0 faults / 100 tests
Year avg: 110.1 / 100 tests
- 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
- The aim of a headlamp is not within limits laid down in 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
Wheels & Suspension
▲ 60.6% better
123.8 faults / 100 tests
Year avg: 314.1 / 100 tests
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A shock absorber damaged … or showing signs of severe leakage
- A suspension pin, bush, joint or bearing: excessively worn
- A suspension component: excessively damaged or corroded
- Tyre tread depth not in accordance with the requirements
Body/Structure
▲ 81.0% better
11.7 faults / 100 tests
Year avg: 61.5 / 100 tests
- A transmission shaft constant velocity joint boot: severely deteriorated
- Fuel system: leaking, or missing or ineffective filler cap
- Exhaust system has a major leak or is insecure
- Exhaust system has a major leak or is insecure
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
Equipment
▲ 86.0% better
1.8 faults / 100 tests
Year avg: 12.9 / 100 tests
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- A seat belt:
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
Other
▲ 52.9% better
22.0 faults / 100 tests
Year avg: 46.7 / 100 tests
- 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
- Exhaust noise levels in excess of those permitted
- Lambda coefficient outside the default limits or the range specified by the manufacturer
- Emissions test unable to be completed
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: 2,871
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 1,868
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 1,704
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 1,392
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 747
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 510
Lamp emitted colour, position or intensity not in accordance with the requirements
ADVISORY
Occurrences: 487
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 283
Exhaust system has a major leak or is insecure
ADVISORY
Occurrences: 267
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 265
Serious faults (Top 10)
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 265
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 260
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 210
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 114
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 104
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 96
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 90
Beam image obviously incorrect
FAIL
Occurrences: 89
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 80
Lamp emitted colour, position or intensity not in accordance with the requirements
FAIL
Occurrences: 76