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Audi A4 - 2017

118.7 faults per 100 tests
Year average for all cars of 2017 is 137.4 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Audi A4, model year 2017. Sample size: 23,476 cars, 52,452 tests and 62,276 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 23,476 cars

The 2017 Audi A4 has an overall defect rate of 119 per 100 vehicles, which is 11% lower than the average for cars from the same year, indicating a solid performance in terms of reliability. Notably, the A4 excels in several categories, with significantly fewer brake issues and minimal defects in steering, lights and electrics, and body structure compared to the average vehicle. However, it does exhibit a rising defect rate with increased mileage, particularly in the higher mileage brackets. Overall, this model stands out for its lower defect rates in key areas, making it a reliable choice in its segment.

Cars by mileage segment

Total: 23,476 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
▲ 33.7% better
48.1 faults / 100 tests
Year avg: 72.5 / 100 tests
  • Brake lining or pad: worn below 1.5mm
  • Brake disc or drum: significantly and obviously worn
  • Excessive fluctuation in brake effort through each wheel revolution
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake lining or pad: worn below 1.5mm
Steering
▲ 92.9% better
0.4 faults / 100 tests
Year avg: 5.6 / 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 roughness in operation of steering
  • Steering rack gaiter or ball joint dust cover: damaged or deteriorated
  • EPS MIL indicating a system malfunction
Visibility
▲ 17.9% better
11.9 faults / 100 tests
Year avg: 14.5 / 100 tests
  • Wiper blade: missing or obviously not clearing the windscreen
  • 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
  • Wiper blade: defective
  • Wiper blade: missing or obviously not clearing the windscreen
Lights & Electrics
▲ 73.0% better
5.5 faults / 100 tests
Year avg: 20.4 / 100 tests
  • The aim of a headlamp is not within limits laid down in the requirements
  • The aim of a headlamp is not within limits laid down in the requirements
  • Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
  • Lamp: multiple light source up to a half not functioning
  • Reflector defective or damaged: by up to 50% of the reflecting surface
Wheels & Suspension
▼ 13.8% worse
162.8 faults / 100 tests
Year avg: 143.1 / 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 spring: or spring component fractured or seriously weakened
  • A suspension pin, bush, joint or bearing: excessively worn
  • A spring: or spring component fractured or seriously weakened
Body/Structure
▲ 57.1% better
3.0 faults / 100 tests
Year avg: 7.0 / 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
  • A transmission: joint, belt or chain excessively worn
  • A transmission shaft constant velocity joint boot: severely deteriorated
  • A main load-bearing structural member: fractured or deformed such that structural rigidity is significantly reduced
Equipment
▲ 51.9% better
1.3 faults / 100 tests
Year avg: 2.7 / 100 tests
  • A seat belt:
  • An SRS malfunction indicator lamp (MIL) indicates a system malfunction
  • 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
Other
▲ 50.0% better
4.5 faults / 100 tests
Year avg: 9.0 / 100 tests
  • Engine MIL inoperative or indicating a malfunction
  • Engine MIL inoperative or indicating a malfunction
  • 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
  • Emissions levels exceed default limits

Fault rate by mileage segment

Model    Year average
0 318 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: 15,175
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 9,870
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 5,382
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 3,771
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 3,520
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 3,004
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 2,361
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 1,864
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 1,763
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 1,356

Serious faults (Top 10)

A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 3,004
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 1,763
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 1,087
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 701
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 599
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 501
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 482
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 399
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 306
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 253