Audi TT - 2017
91.6 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 TT, model year 2017.
Sample size: 8,856 cars, 20,241 tests and 18,536 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: 8,856 cars
The 2017 Audi TT has a significantly lower overall defect rate compared to the average car of the same year, with 92 defects per 100 vehicles, which is 32% better than the yearly average of 134 defects. Notably, the Audi TT excels in several categories such as steering, where it has a mere 0.09% defect rate compared to the average of 5.15%, and visibility, with 8.27% versus 14.53%. While tyre wear is a common issue across vehicles, this model shows strong performance in areas like lights and electrics, and body structure, where it outperforms the average significantly. The defect rates tend to increase with mileage, particularly after 124,000 miles, but the Audi TT maintains a solid reliability profile overall.
Cars by mileage segment
Total: 8,856 cars
Categories
Brakes
▲ 15.7% better
61.1 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 hose ferrules: excessively corroded
- Brake lining or pad: worn below 1.5mm
- Brake lining or pad: worn below 1.5mm
Steering
▲ 98.2% better
0.1 faults / 100 tests
Year avg: 5.6 / 100 tests
- 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.
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 42.8% better
8.3 faults / 100 tests
Year avg: 14.5 / 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
- Wiper blade: defective
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 69.1% better
6.3 faults / 100 tests
Year avg: 20.4 / 100 tests
- 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
- 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
- The aim of a headlamp is not within limits laid down in the requirements
Wheels & Suspension
▲ 27.5% better
103.8 faults / 100 tests
Year avg: 143.1 / 100 tests
- Tyre tread depth not in accordance with the requirements
- A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
- A shock absorber damaged … or showing signs of severe leakage
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- Tyre tread depth not in accordance with the requirements
Body/Structure
▲ 91.4% better
0.6 faults / 100 tests
Year avg: 7.0 / 100 tests
- A transmission shaft flexible coupling: excessively deteriorated
- A transmission shaft flexible coupling: excessively deteriorated
- A driver’s seat: fore and aft adjustment mechanism not working as intended
- Exhaust system has a major leak or is insecure
- A transmission shaft constant velocity joint boot: severely deteriorated
Equipment
▲ 74.1% better
0.7 faults / 100 tests
Year avg: 2.7 / 100 tests
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- A seat belt:
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- A seat belt: webbing or flexible stalk significantly stretched or weakened
Other
▲ 74.4% better
2.3 faults / 100 tests
Year avg: 9.0 / 100 tests
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Exhaust noise levels in excess of those permitted
- Lambda coefficient outside the default limits or the range specified by the manufacturer
- Engine MIL inoperative or indicating a malfunction
- 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: 5,541
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 2,838
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 2,243
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 2,056
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 663
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 544
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 437
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 423
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 388
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 329
Serious faults (Top 10)
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 544
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 329
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 240
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 187
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: 152
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 89
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 80
Brake disc or drum: significantly and obviously worn
FAIL
Occurrences: 72
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 49
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 41