Skip to main content

Porsche 911 - 2009

81.1 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 911, model year 2009. Sample size: 1,831 cars, 4,155 tests and 3,370 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 1,831 cars

The 2009 Porsche 911 has a significantly lower overall defect rate of 81 per 100 vehicles, which is 74% better than the average for cars of the same year, recorded at 310 per 100 vehicles. Notably, this model excels in several key categories including brakes, steering, and visibility, where it performs much better than average, particularly with brake defects being only 53% of the average rate. Despite common issues like tyre wear, the 911 shows strong performance across various segments, especially in the 0–31,000 miles category, where it has the highest defect rate at 287 per 100, but still remains well below the yearly average in all mileage brackets. Overall, the Porsche 911 stands out for its low defect rates and reliability compared to its peers.

Cars by mileage segment

Total: 1,831 cars

More model years for Porsche 911

1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022

Other models from Porsche

Porsche 718 CAYMAN GT4 Porsche 718 SPYDER Porsche 911 Porsche 924 Porsche 928 Porsche 944 Porsche 968 Porsche BOXSTER Porsche CARRERA Porsche CAYENNE Porsche MACAN Porsche PANAMERA Porsche TAYCAN

Categories

Brakes
▲ 55.1% better
52.8 faults / 100 tests
Year avg: 117.5 / 100 tests
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake lining or pad: worn below 1.5mm
  • Brake pipe damaged or excessively corroded
  • Brake pipe damaged or excessively corroded
  • Brake disc or drum: significantly and obviously worn
Steering
▲ 87.7% better
2.0 faults / 100 tests
Year avg: 16.3 / 100 tests
  • 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.
  • Excessive radial movement between the top of the steering column and the shaft indicating an excessively worn top bearing
  • Steering rack gaiter or ball joint dust cover: damaged or deteriorated
  • A steering ball joint: with excessive wear or free play
Visibility
▲ 73.5% better
6.2 faults / 100 tests
Year avg: 23.4 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
  • Obligatory mirror or device: slightly damaged or loose
  • Windscreen washers not working or not providing sufficient fluid to clear the windscreen
  • Wiper blade: defective
  • Wiper blade: missing or obviously not clearing the windscreen
Lights & Electrics
▲ 83.7% better
13.2 faults / 100 tests
Year avg: 80.9 / 100 tests
  • 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
  • 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
  • Headlamp reflector or lens: slightly defective
Wheels & Suspension
▲ 75.2% better
74.4 faults / 100 tests
Year avg: 299.8 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • A suspension pin, bush, joint or bearing: excessively worn
  • A shock absorber damaged … or showing signs of severe leakage
Body/Structure
▲ 82.7% better
7.2 faults / 100 tests
Year avg: 41.5 / 100 tests
  • 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: missing, split, insecure or no longer prevents the ingress of dirt
  • A transmission shaft constant velocity joint boot: severely deteriorated
  • A passenger seat: with a defective structure or the backrest cannot be retained in the upright position
Equipment
▲ 84.3% better
1.3 faults / 100 tests
Year avg: 8.3 / 100 tests
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • A seat belt:
  • Audible warning not in accordance with requirements
  • A seat belt: webbing or flexible stalk significantly stretched or weakened
  • Seat belt not functioning as intended or of an incorrect type
Other
▲ 84.9% better
5.2 faults / 100 tests
Year avg: 34.4 / 100 tests
  • Lambda coefficient outside the default limits or the range specified by the manufacturer
  • Emissions levels exceed default limits
  • Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
  • Emissions test unable to be completed
  • Emissions levels exceed the manufacturer’s specified limits

Fault rate by mileage segment

Model    Year average
0 454 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: 471
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 453
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 446
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 329
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 267
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 122
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 77
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 70
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 67
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 63

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 70
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 63
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 51
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 33
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 27
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 25
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 22
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 19
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 17
Headlamp levelling device inoperative
FAIL
Occurrences: 11