Audi A8 - 2017
60.8 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 A8, model year 2017.
Sample size: 786 cars, 1,743 tests and 1,060 recorded faults.
0%
Less faults compared to the average car of same model year
Less faults compared to the average car of same model year
Quick summary
Total: 786 cars
The 2017 Audi A8 shows a significantly lower overall defect rate of 61 defects per 100 vehicles, which is 55% better than the average of 134 defects for cars of the same year. Notably, the Audi A8 excels in several categories, particularly in brakes, steering, and lights & electrics, where its defect rates are far below average. In terms of mileage-related trends, defects increase steadily with higher mileage, but the A8's performance remains consistently better than average across all mileage segments. While tyre wear is a common issue, the model stands out positively in critical areas of safety and functionality.
Cars by mileage segment
Total: 786 cars
Categories
Brakes
▲ 55.3% better
32.4 faults / 100 tests
Year avg: 72.5 / 100 tests
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake disc or drum: significantly and obviously worn
- Brake disc or drum: significantly and obviously worn
- Brake lining or pad: worn below 1.5mm
- Brake lining or pad: worn below 1.5mm
Steering
▲ 87.5% better
0.7 faults / 100 tests
Year avg: 5.6 / 100 tests
- EPS MIL indicating a system malfunction
- A steering ball joint: with excessive wear or free play
- Excessive movement of centre of steering wheel up or down
Visibility
▲ 34.5% better
9.5 faults / 100 tests
Year avg: 14.5 / 100 tests
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Windscreen or window excessively tinted: but not adversely affecting driver’s view
- 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
▲ 92.6% better
1.5 faults / 100 tests
Year avg: 20.4 / 100 tests
- A direction indicator: lamp with a multiple light source up to 1/2 not functioning
- A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
- The aim of a headlamp is not within limits laid down in the requirements
- Headlamp cleaning device: inoperative in the case of LED or gas discharge systems (HID)
- A rear registration plate lamp or light source missing or inoperative: when rear registration plate has only one lamp or all lamps not working
Wheels & Suspension
▲ 50.3% better
71.1 faults / 100 tests
Year avg: 143.1 / 100 tests
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
- Tyre tread depth not in accordance with the requirements
- A suspension pin, bush, joint or bearing: excessively worn
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
Body/Structure
▲ 90.0% better
0.7 faults / 100 tests
Year avg: 7.0 / 100 tests
- Exhaust system has a major leak or is insecure
- Exhaust system has a major leak or is insecure
- Fuel system: leaking, or missing or ineffective filler cap
Equipment
▲ 88.9% better
0.3 faults / 100 tests
Year avg: 2.7 / 100 tests
- A seat belt:
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
Other
▲ 40.0% better
5.4 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
- Emissions levels exceed default limits
- Engine MIL inoperative or indicating a malfunction
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 314
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 103
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 89
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 86
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 85
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 60
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 53
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 39
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 27
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 21
Serious faults (Top 10)
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 27
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 21
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 17
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 8
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 8
Emissions levels exceed default limits
FAIL
Occurrences: 6
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 6
Brake disc or drum: significantly and obviously worn
FAIL
Occurrences: 5
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 4
A wheel: with a loose or missing wheel nut, bolt or stud
FAIL
Occurrences: 4