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Porsche 911 - 2011

52.0 faults per 100 tests
Year average for all cars of 2011 is 274.4 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Porsche 911, model year 2011. Sample size: 1,633 cars, 3,656 tests and 1,902 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 1,633 cars

The 2011 Porsche 911 has an overall defect rate of 52 per 100 vehicles, significantly lower than the 271 per 100 average for cars of the same year, marking an impressive 81% improvement. Notably, defects related to brakes, steering, visibility, and electrics are particularly low for this model, with the Porsche exhibiting much better performance than the average car in these categories. Mileage trends show that defect rates increase with mileage, but the 911 still maintains a relatively low number of defects even at higher mileages. Overall, this model stands out for its reliability, especially in critical areas like braking and steering.

Cars by mileage segment

Total: 1,633 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
▲ 79.3% better
22.8 faults / 100 tests
Year avg: 109.9 / 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
▲ 94.9% better
0.8 faults / 100 tests
Year avg: 15.8 / 100 tests
  • A steering ball joint: with excessive wear or free play
  • Excessive radial movement between the top of the steering column and the shaft indicating an excessively worn top bearing
  • EPS MIL indicating a system malfunction
  • 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: missing or no longer prevents the ingress of dirt etc.
Visibility
▲ 70.8% better
6.2 faults / 100 tests
Year avg: 21.2 / 100 tests
  • Wiper blade: defective
  • Windscreen washers not working or not providing sufficient fluid to clear the windscreen
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
  • A bonnet primary retaining device excessively deteriorated, ineffective or insecure
  • Wiper blade: missing or obviously not clearing the windscreen
Lights & Electrics
▲ 87.5% better
8.6 faults / 100 tests
Year avg: 68.9 / 100 tests
  • Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow
  • 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
  • Beam image obviously incorrect
  • The aim of a headlamp is not within limits laid down in the requirements
Wheels & Suspension
▲ 79.0% better
55.9 faults / 100 tests
Year avg: 266.4 / 100 tests
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • A shock absorber damaged … or showing signs of severe leakage
  • Tyre tread depth not in accordance with the requirements
  • A suspension pin, bush, joint or bearing: excessively worn
  • A spring: or spring component fractured or seriously weakened
Body/Structure
▲ 84.0% better
5.0 faults / 100 tests
Year avg: 31.3 / 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
▲ 93.2% better
0.5 faults / 100 tests
Year avg: 7.4 / 100 tests
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • Audible warning:
  • Audible warning control insecure
  • A seat belt: or flexible stalk damaged
  • ESC switch damaged or not functioning correctly
Other
▲ 84.9% better
4.2 faults / 100 tests
Year avg: 27.8 / 100 tests
  • 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
  • Lambda coefficient outside the default limits or the range specified by the manufacturer
  • Exhaust noise levels in excess of those permitted

Fault rate by mileage segment

Model    Year average
0 421 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: 299
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 232
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 188
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 177
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 141
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: 63
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 52
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 51
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 43

Serious faults (Top 10)

A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 51
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 34
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 29
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 18
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 14
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 11
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 11
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 9
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 8
Beam image obviously incorrect
FAIL
Occurrences: 7