Porsche BOXSTER - 2003
202.8 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 Porsche BOXSTER, model year 2003.
Sample size: 2,869 cars, 6,669 tests and 13,525 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: 2,869 cars
The 2003 Porsche Boxster has an overall defect rate of 203 defects per 100 vehicles, which is significantly lower than the average of 378 defects per 100 for vehicles of the same year, marking a 46% improvement. Notably, the Boxster performs exceptionally well in categories such as Steering, Visibility, and Lights & Electrics, with defect rates much lower than average. The data also reveals that as mileage increases, the defect rate for the Boxster rises; however, this increase is less pronounced compared to the yearly averages. Overall, the Boxster stands out positively for its robust performance in several key areas, demonstrating reliability compared to its peers.
Cars by mileage segment
Total: 2,869 cars
Categories
Brakes
▲ 16.8% better
140.8 faults / 100 tests
Year avg: 169.3 / 100 tests
- Brake pipe damaged or excessively corroded
- Brake pipe damaged or excessively corroded
- Excessive fluctuation in brake effort through each wheel revolution
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake disc or drum: significantly and obviously worn
Steering
▲ 75.0% better
6.3 faults / 100 tests
Year avg: 25.2 / 100 tests
- Power steering pipe, hose or wiring: excessively damaged or corroded
- 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
▲ 51.3% better
14.5 faults / 100 tests
Year avg: 29.8 / 100 tests
- Wiper blade: defective
- Wiper blade: missing or obviously not clearing the windscreen
- 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
Lights & Electrics
▲ 49.0% better
52.4 faults / 100 tests
Year avg: 102.8 / 100 tests
- 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
- 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
- A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
Wheels & Suspension
▲ 54.6% better
137.1 faults / 100 tests
Year avg: 302.1 / 100 tests
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A suspension component: excessively damaged or corroded
- 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
Body/Structure
▲ 68.4% better
20.6 faults / 100 tests
Year avg: 65.2 / 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
- Fuel system: leaking, or missing or ineffective filler cap
- A transmission shaft constant velocity joint boot: severely deteriorated
- Exhaust system has a major leak or is insecure
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
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- A seat belt:
- Audible warning:
- 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
Other
▲ 39.5% better
31.9 faults / 100 tests
Year avg: 52.7 / 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
- Emissions levels exceed the manufacturer’s specified limits
- 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: 2,268
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 1,326
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 1,140
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 872
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 838
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 461
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 342
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 305
Exhaust system has a major leak or is insecure
ADVISORY
Occurrences: 294
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 232
Serious faults (Top 10)
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 342
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 232
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 144
A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
FAIL
Occurrences: 131
Beam image obviously incorrect
FAIL
Occurrences: 122
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 117
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 115
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 106
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 95
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 83