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Audi A4 - 2005

356.7 faults per 100 tests
Year average for all cars of 2005 is 377.4 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Audi A4, model year 2005. Sample size: 7,988 cars, 16,614 tests and 59,267 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 7,988 cars

The 2005 Audi A4 has a lower overall defect rate of 357 per 100 vehicles, which is 5% better than the average for cars of the same year. Notably, the A4 shows significant strengths in steering and body/structure defects, with rates 50% and 30% lower than average, respectively. Mileage trends reveal that defect rates increase with higher mileage, but the A4 performs relatively well across all mileage segments compared to its peers. While tyre wear is a common issue, it is not a standout concern for this model. Overall, the Audi A4 demonstrates a positive reliability profile compared to the average vehicle from 2005.

Cars by mileage segment

Total: 7,988 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

Audi A1 Audi A2 Audi A3 Audi A4 Audi A5 Audi A6 Audi A7 Audi A8 Audi ALLROAD Audi E-TRON Audi Q2 Audi Q3 Audi Q4 Audi Q5 Audi Q7 Audi Q8 Audi R8 Audi RS4 Audi S3 Audi S4 Audi TT

Categories

Brakes
▲ 16.3% better
132.7 faults / 100 tests
Year avg: 158.5 / 100 tests
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Significant brake effort recorded with no brake applied indicating a binding brake
  • Brake hose ferrules: excessively corroded
  • Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
  • Brake lining or pad: worn below 1.5mm
Steering
▲ 50.4% better
11.1 faults / 100 tests
Year avg: 22.4 / 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
  • 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.
Visibility
▲ 20.4% better
22.6 faults / 100 tests
Year avg: 28.4 / 100 tests
  • Windscreen washers not working or not providing sufficient fluid to clear the windscreen
  • Wiper blade: missing or obviously not clearing the windscreen
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
  • Wiper blade: defective
  • Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 16.2% better
92.3 faults / 100 tests
Year avg: 110.1 / 100 tests
  • 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
  • A rear registration plate lamp or light source missing or inoperative: when rear registration plate has only one lamp or all lamps not working
  • Headlamp reflector or lens: slightly defective
  • Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow
Wheels & Suspension
▼ 11.8% worse
351.3 faults / 100 tests
Year avg: 314.1 / 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 suspension pin, bush, joint or bearing: excessively worn
  • A suspension component: excessively damaged or corroded
  • A suspension joint dust cover: severely deteriorated
Body/Structure
▲ 31.7% better
42.0 faults / 100 tests
Year avg: 61.5 / 100 tests
  • Exhaust system has a major leak or is insecure
  • Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
  • A transmission shaft constant velocity joint boot: severely deteriorated
  • 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
Equipment
▲ 1.6% better
12.7 faults / 100 tests
Year avg: 12.9 / 100 tests
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • A seat belt: webbing or flexible stalk significantly stretched or weakened
  • 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
Other
▼ 4.3% worse
48.7 faults / 100 tests
Year avg: 46.7 / 100 tests
  • Engine MIL inoperative or indicating a malfunction
  • Lambda coefficient outside the default limits or the range specified by the manufacturer
  • Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
  • Smoke opacity levels exceed the manufacturer’s specified limit
  • Engine MIL inoperative or indicating a malfunction

Fault rate by mileage segment

Model    Year average
0 520 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: 8,243
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 5,378
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 3,017
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 2,881
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 2,367
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 2,142
A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
MINOR
Occurrences: 2,023
A suspension joint dust cover: severely deteriorated
MINOR
Occurrences: 1,684
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 1,649
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 1,565

Serious faults (Top 10)

A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 1,565
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 591
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 582
Beam image obviously incorrect
FAIL
Occurrences: 567
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 517
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 496
Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
FAIL
Occurrences: 425
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 425
Warning device shows system malfunction
FAIL
Occurrences: 375
A rear registration plate lamp or light source missing or inoperative: when rear registration plate has only one lamp or all lamps not working
FAIL
Occurrences: 337