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Audi A4 - 2009

260.9 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 Audi A4, model year 2009. Sample size: 14,065 cars, 31,313 tests and 81,685 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 14,065 cars

The 2009 Audi A4 shows a lower overall defect rate of approximately 261 defects per 100 vehicles, which is 16% better than the average for its year, recorded at 310 defects per 100 vehicles. It particularly excels in categories like brakes, where it has 85 defects per 100 compared to the average of 121, and in steering and lights & electrics, both showing significant improvements over average. The defect rate increases with mileage, especially notable in the highest mileage category of 124,000+ miles. Overall, this model demonstrates a solid performance, with fewer defects in several critical areas compared to its peers.

Cars by mileage segment

Total: 14,065 cars

More model years for Audi A4

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 Audi

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Categories

Brakes
▲ 27.6% better
85.1 faults / 100 tests
Year avg: 117.5 / 100 tests
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake disc or drum: significantly and obviously worn
  • Brake lining or pad: worn below 1.5mm
  • Brake lining or pad: worn below 1.5mm
  • Excessive fluctuation in brake effort through each wheel revolution
Steering
▲ 57.1% better
7.0 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: damaged or deteriorated
  • A steering ball joint: with excessive wear or free play
  • Free play in the steering, measured at the rim of the steering wheel is: excessive
  • Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
Visibility
▲ 14.1% better
20.1 faults / 100 tests
Year avg: 23.4 / 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
  • 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
  • Wiper blade: defective
Lights & Electrics
▲ 48.1% better
42.0 faults / 100 tests
Year avg: 80.9 / 100 tests
  • The aim of a headlamp is not within limits laid down in the requirements
  • Lamp: multiple light source up to a half not functioning
  • A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
  • The aim of a headlamp is not within limits laid down in the requirements
  • Beam image obviously incorrect
Wheels & Suspension
▲ 1.2% better
296.3 faults / 100 tests
Year avg: 299.8 / 100 tests
  • A suspension pin, bush, joint or bearing: excessively worn
  • A suspension component: excessively damaged or corroded
  • A spring: or spring component fractured or seriously weakened
  • Tyre tread depth not in accordance with the requirements
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
Body/Structure
▲ 0.2% better
41.4 faults / 100 tests
Year avg: 41.5 / 100 tests
  • A transmission shaft constant velocity joint boot: severely deteriorated
  • 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
  • Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
Equipment
▲ 44.6% better
4.6 faults / 100 tests
Year avg: 8.3 / 100 tests
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • Seat belt buckle missing, damaged or not functioning as intended
  • A seat belt: webbing or flexible stalk significantly stretched or weakened
  • Seat belt buckle missing, damaged or not functioning as intended
  • ESC MIL indicates a system malfunction
Other
▲ 27.3% better
25.0 faults / 100 tests
Year avg: 34.4 / 100 tests
  • Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
  • Engine MIL inoperative or indicating a malfunction
  • Engine MIL inoperative or indicating a malfunction
  • Engine MIL inoperative or indicating a malfunction
  • Any part of the noise suppression system: insecure

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)

A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 13,912
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 11,438
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 4,648
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 3,265
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 3,012
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 2,739
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 2,725
A transmission shaft constant velocity joint boot: severely deteriorated
MINOR
Occurrences: 2,433
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 2,161
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 1,954

Serious faults (Top 10)

A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 1,758
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 1,689
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 1,584
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 1,114
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 1,066
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 591
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 558
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 528
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 433
Beam image obviously incorrect
FAIL
Occurrences: 397