Porsche BOXSTER - 2009
99.1 faults per 100 tests
Year average for all cars of 2009 is 311.0 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Porsche BOXSTER, model year 2009.
Sample size: 1,023 cars, 2,313 tests and 2,293 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: 1,023 cars
The 2009 Porsche Boxster demonstrates a significantly lower overall defect rate compared to the average car of the same year, with 99 defects per 100 vehicles, which is 68% better than the yearly average of 310 defects. Notably, it shows particularly strong performance in categories such as Brakes and Steering, where it has 40% and 86% fewer defects, respectively. The vehicle also excels in areas like Visibility and Lights & Electrics, with defects substantially lower than the average. Conversely, while tyre wear is acknowledged as a common issue across vehicles, it is not the primary concern for this model. The defect rates increase with mileage; however, even at higher mileages, the Boxster maintains a notably lower defect rate than its peers.
Cars by mileage segment
Total: 1,023 cars
Categories
Brakes
▲ 38.0% better
72.9 faults / 100 tests
Year avg: 117.5 / 100 tests
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake pipe damaged or excessively corroded
- Excessive fluctuation in brake effort through each wheel revolution
- Brake pipe damaged or excessively corroded
- Brake lining or pad: worn below 1.5mm
Steering
▲ 86.5% better
2.2 faults / 100 tests
Year avg: 16.3 / 100 tests
- 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: missing or no longer prevents the ingress of dirt etc.
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 57.7% better
9.9 faults / 100 tests
Year avg: 23.4 / 100 tests
- Wiper blade: defective
- Obligatory mirror or device: slightly damaged or loose
- 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
Lights & Electrics
▲ 83.8% better
13.1 faults / 100 tests
Year avg: 80.9 / 100 tests
- 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
- The aim of a headlamp is not within limits laid down in the requirements
- 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
Wheels & Suspension
▲ 70.8% better
87.6 faults / 100 tests
Year avg: 299.8 / 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
▲ 92.5% better
3.1 faults / 100 tests
Year avg: 41.5 / 100 tests
- Exhaust system has a major leak or is insecure
- Fuel system: leaking, or missing or ineffective filler cap
- A transmission shaft constant velocity joint boot: severely deteriorated
- A body panel or body component: damaged or corroded and likely to cause injury when grazed or contacted, or insecure
Equipment
▲ 96.4% better
0.3 faults / 100 tests
Year avg: 8.3 / 100 tests
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- ESC MIL indicates a system malfunction
- Seat belt retractor not functioning as intended
Other
▲ 73.8% better
9.0 faults / 100 tests
Year avg: 34.4 / 100 tests
- Exhaust noise levels in excess of those permitted
- 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
- Engine MIL inoperative or indicating a malfunction
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 360
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 344
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 305
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 245
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 143
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 81
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 71
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 35
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 35
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 31
Serious faults (Top 10)
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 31
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 26
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 23
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 14
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 12
Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 11
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 11
Brake disc or drum: significantly and obviously worn
FAIL
Occurrences: 10
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 8
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 8