Porsche 911 - 2012
52.8 faults per 100 tests
Year average for all cars of 2012 is 249.2 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Porsche 911, model year 2012.
Sample size: 2,094 cars, 5,209 tests and 2,749 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: 2,094 cars
The 2012 Porsche 911 exhibits a significantly lower overall defect rate compared to the average car of the same year, with just 53 defects reported per 100 vehicles, compared to the average of 246. Common issues such as tyre wear were not highlighted, indicating better performance in more critical areas. Notably, the model excels in categories like brakes, steering, and visibility, with defect rates far below average, showcasing a robust reliability. In terms of mileage-related trends, the defect rate slightly increases with mileage, but the overall figures remain favourable throughout all mileage segments.
Cars by mileage segment
Total: 2,094 cars
Categories
Brakes
▲ 71.6% better
29.5 faults / 100 tests
Year avg: 103.8 / 100 tests
- Brake pipe damaged or excessively corroded
- Brake disc or drum: significantly and obviously worn
- Excessive fluctuation in brake effort through each wheel revolution
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake lining or pad: worn below 1.5mm
Steering
▲ 97.7% better
0.3 faults / 100 tests
Year avg: 13.2 / 100 tests
- EPS MIL indicating a system malfunction
- A steering ball joint: with excessive wear or free play
Visibility
▲ 75.0% better
4.8 faults / 100 tests
Year avg: 19.2 / 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
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 93.5% better
4.0 faults / 100 tests
Year avg: 61.9 / 100 tests
- The aim of a headlamp is not within limits laid down in the requirements
- Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
- Stop lamp(s): all missing or inoperative
- The aim of a headlamp is not within limits laid down in the requirements
- A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
Wheels & Suspension
▲ 75.2% better
60.5 faults / 100 tests
Year avg: 244.4 / 100 tests
- Tyre tread depth not in accordance with the requirements
- A suspension pin, bush, joint or bearing: excessively worn
- A suspension pin, bush, joint or bearing: excessively worn
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A spring: or spring component fractured or seriously weakened
Body/Structure
▲ 88.2% better
3.1 faults / 100 tests
Year avg: 26.2 / 100 tests
- A transmission shaft constant velocity joint boot: severely deteriorated
- 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
- A transmission: joint, belt or chain excessively worn
Equipment
▲ 85.5% better
0.9 faults / 100 tests
Year avg: 6.2 / 100 tests
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- ESC MIL indicates a system malfunction
- Seat belt buckle missing, damaged or not functioning as intended
- A seat belt: or flexible stalk damaged
- A seat belt: webbing or flexible stalk significantly stretched or weakened
Other
▲ 89.8% better
2.4 faults / 100 tests
Year avg: 23.6 / 100 tests
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Emissions levels exceed the manufacturer’s specified limits
- Emissions levels exceed default limits
- 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)
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 588
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 467
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 302
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 197
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 173
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 133
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 90
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 65
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 64
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 61
Serious faults (Top 10)
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 61
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 33
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 32
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 25
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 19
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 17
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 15
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 15
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 14
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 14