Audi TT - 1999
447.2 faults per 100 tests
Year average for all cars of 1999 is 349.1 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Audi TT, model year 1999.
Sample size: 362 cars, 718 tests and 3,211 recorded faults.
0%
More faults compared to the average car of same model year
More faults compared to the average car of same model year
Quick summary
Total: 362 cars
The 1999 Audi TT has an overall defect rate of 447 defects per 100 vehicles, which is 30% higher than the average rate of 345 defects for cars of the same year. It shows significant weaknesses in categories such as brakes, steering, lights and electronics, and wheels, with defects in these areas exceeding the average by up to 61%. Interestingly, the model performs better than average in equipment-related issues, indicating fewer problems than typical. Additionally, as mileage increases, the defect rate also rises, particularly notable in the higher mileage brackets. Overall, while the Audi TT excels in some aspects, its higher defect rates in critical systems are a concern.
Cars by mileage segment
Total: 362 cars
Categories
Brakes
▼ 39.6% worse
214.2 faults / 100 tests
Year avg: 153.4 / 100 tests
- Brake pipe damaged or excessively corroded
- Brake hose ferrules: excessively corroded
- Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake pipe damaged or excessively corroded
Steering
▼ 57.9% worse
40.9 faults / 100 tests
Year avg: 25.9 / 100 tests
- A steering ball joint: with excessive wear or free play
- Power steering pipe, hose or wiring: excessively damaged or corroded
- 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
▲ 5.6% better
25.1 faults / 100 tests
Year avg: 26.6 / 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
▼ 57.9% worse
115.3 faults / 100 tests
Year avg: 73.0 / 100 tests
- Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow
- 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
- Headlamp reflector or lens: slightly defective
- A battery insecure: but not likely to fall from carrier
Wheels & Suspension
▼ 29.1% worse
344.6 faults / 100 tests
Year avg: 266.9 / 100 tests
- Tyre tread depth not in accordance with the requirements
- A spring: or spring component fractured or seriously weakened
- A suspension pin, bush, joint or bearing: excessively worn
- A suspension component: excessively damaged or corroded
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
Body/Structure
▲ 13.3% better
66.3 faults / 100 tests
Year avg: 76.5 / 100 tests
- 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
- Exhaust system has a major leak or is insecure
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
Equipment
▲ 26.0% better
14.2 faults / 100 tests
Year avg: 19.2 / 100 tests
- ESC MIL indicates a system malfunction
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- is significantly reduced or The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a ’prescribed area’): inadequately repaired
- Seat belt not functioning as intended or of an incorrect type
Other
▼ 30.6% worse
73.8 faults / 100 tests
Year avg: 56.5 / 100 tests
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Emissions levels exceed default limits
- Emissions levels exceed the manufacturer’s specified limits
- Lambda coefficient outside the default limits or the range specified by the manufacturer
- Emissions test unable to be completed
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 334
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 246
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 216
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 215
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 166
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 156
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 123
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 85
A transmission shaft constant velocity joint boot: severely deteriorated
MINOR
Occurrences: 83
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 70
Serious faults (Top 10)
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 70
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 30
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 28
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 27
Lambda coefficient outside the default limits or the range specified by the manufacturer
FAIL
Occurrences: 26
Beam image obviously incorrect
FAIL
Occurrences: 26
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 23
Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 22
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 22
Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
FAIL
Occurrences: 21