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Porsche 911 - 2008

96.2 faults per 100 tests
Year average for all cars of 2008 is 340.8 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Porsche 911, model year 2008. Sample size: 2,312 cars, 5,204 tests and 5,008 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 2,312 cars

The 2008 Porsche 911 exhibits a significantly lower overall defect rate compared to the yearly average, with only 96 defects per 100 vehicles, marking a 71.5% improvement. Mileage-related trends indicate increased defects as mileage rises, particularly within the highest range, where defects reach 376 per 100 vehicles. Notably, the 911 excels in several categories, including brakes and steering, where it shows impressive reductions in defect rates compared to the average. However, it also performs well in visibility, lights and electrics, and body structure, all of which have notably fewer defects than typical vehicles of the same year.

Cars by mileage segment

Total: 2,312 cars

Categories

Brakes
▲ 53.4% better
62.0 faults / 100 tests
Year avg: 133.1 / 100 tests
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake lining or pad: worn below 1.5mm
  • Brake hose ferrules: excessively corroded
  • Brake pipe damaged or excessively corroded
  • Brake disc or drum: significantly and obviously worn
Steering
▲ 82.2% better
3.2 faults / 100 tests
Year avg: 18.0 / 100 tests
  • A steering ball joint: with excessive wear or free play
  • Steering rack gaiter or ball joint dust cover: damaged or deteriorated
  • Power steering fluid leaking or system malfunctioning
  • Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
  • Free play in the steering, measured at the rim of the steering wheel is: excessive
Visibility
▲ 67.6% better
8.2 faults / 100 tests
Year avg: 25.3 / 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
▲ 88.1% better
11.0 faults / 100 tests
Year avg: 92.2 / 100 tests
  • The aim of a headlamp is not within limits laid down in the requirements
  • Lamp emitted colour, position or intensity not in accordance with the requirements
  • Headlamp reflector or lens: slightly defective
  • 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
Wheels & Suspension
▲ 72.6% better
84.9 faults / 100 tests
Year avg: 310.3 / 100 tests
  • 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
  • A spring: or spring component fractured or seriously weakened
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
Body/Structure
▲ 82.5% better
9.0 faults / 100 tests
Year avg: 51.3 / 100 tests
  • 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
  • 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
▲ 87.1% better
1.3 faults / 100 tests
Year avg: 10.1 / 100 tests
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • Audible warning not in accordance with requirements
  • A seat belt:
  • A seat belt: webbing or flexible stalk significantly stretched or weakened
Other
▲ 68.9% better
12.8 faults / 100 tests
Year avg: 41.2 / 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
  • Exhaust emits excessive dense blue or clearly visible black smoke during acceleration which would obscure the view of 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
0 481 0–31,000 mi 31,000–62,000 62,000–93,000 93,000–124,000 124,000+
* Metric: faults per 100 tests.

Most common faults (Top 10)

Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 703
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 638
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 604
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 491
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 405
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 253
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 112
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 101
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 92
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 89

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 84
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 70
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 44
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 38
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 37
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 36
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 35
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 35
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 28
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 26