104,121 tests in 2025
Audi Tt reliability and MOT pass rate
80% passed first time. The 20% fail rate is 2.6 points better than the all-car average, on a median example 13 years old with 77,330 miles.
Pass rate
80%
22.6% of all cars failed; 20% of these did.
Fixed on the day
3.4%
Passed after a defect was put right during the visit.
Median at test
77,330 mi
13 years old.
Fail rate by age
| Age at test | Tests | Fail rate |
|---|---|---|
| 3-5 years | 7,360 | 7.2% |
| 6-9 years | 23,302 | 9.8% |
| 10-13 years | 22,580 | 14.8% |
| 14+ years | 50,805 | 28.8% |
What the Tt fails on
Share of failed tests with at least one fail item in each DVSA inspection section. A test can fail in several sections at once.
- Suspension213 dangerous36.1%
- Lamps, reflectors and electrical equipment182 dangerous30%
- Tyres7,135 dangerous29.8%
- Brakes1,850 dangerous25.8%
- Noise, emissions and leaks12 dangerous16.3%
- Body, chassis, structure92 dangerous12.7%
- Visibility16 dangerous12.1%
- Seat belts and supplementary restraint systems1 dangerous5.4%
Is the Tt getting worse?
The fail rate fell 0.1 points to 20.1% from 2022 to 2025 while the median one tested aged 1 year. Ageing alone would predict about 1.9 points, so it is holding up better than the fleet average for its age.
| Year | Tests | Median age | Fail rate | All cars | |
|---|---|---|---|---|---|
| 2022 | 116,287 | 12 | 20.2% | 22.5% | |
| 2023 | 115,643 | 12 | 20.5% | 22.8% | |
| 2024 | 98,733 | 13 | 21.1% | 23.2% | |
| 2025 | 103,357 | 13 | 20.1% | 22.6% |
Fail rate is first attempts at class 4 tests. Median age is the age of a typical Tt at its test that year, and it is the number to watch: across the whole fleet each extra year of age adds roughly 1.9 points to the fail rate, so a model whose age and fail rate rise together is simply getting older.
The exact defects that fail it
Every failure item DVSA recorded against a Tt in 2025, counted by how many tests each one appeared on.
- 1Tread depth: tread depth below requirements of 1.6mm2,609 tests
- 2Coil spring: fractured or broken2,449 tests
- 3Position lamp: not working1,898 tests
- 4Malfunction indicator lamp: inoperative or indicates a malfunction1,824 tests
- 5Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt1,708 tests
- 6Linkage ball joint dust cover: ball joint dust cover no longer prevents the ingress of dirt1,659 tests
- 7Condition: has ply or cords exposed1,442 tests
- 8Condition: has a cut in excess of the requirements deep enough to reach the ply or cords1,297 tests
What wears out first
Advisories are the tester flagging wear that is still legal. A typical Tt collects 2.81 of them per test, and these are the ones that come up most. Treat it as the running-repairs list for the next year or two.
- 1Tread depth: tread depth below requirements of 1.6mm16,442 tests
- 2Brake discs: in such a condition that it is seriously weakened10,040 tests
- 3Condition: has a tear, caused by separation or partial failure of its structure7,120 tests
- 4Brake pads: less than 1.5 mm thick6,139 tests
- 5Suspension arm: corroded and seriously weakened5,556 tests
- 6Sub-frame: corroded and seriously weakened5,390 tests
- 7Pins and bushes: pin or bush excessively worn5,316 tests
- 8Coil spring: corroded so that its cross sectional area is reduced and seriously weakened4,961 tests
Questions
What is the Audi Tt MOT pass rate?
80% of the 104,121 Audi Tt first-attempt MOTs in 2025 passed. The fail rate of 20% compares with 22.6% across all cars. A further 3.4% passed after a defect was fixed during the test visit.
What does a Audi Tt usually fail on?
The single most common failure is "Tread depth: tread depth below requirements of 1.6mm", recorded on 2,609 failed tests, followed by "Coil spring: fractured or broken" and "Position lamp: not working". By section, suspension appears in 36.1% of failures, lamps, reflectors and electrical equipment appears in 30% of failures, tyres appears in 29.8% of failures.
Does age change the odds?
Sharply. At 3 to 5 years old the fail rate was 7.2%; at 14+ years it was 28.8%. The median Audi Tt tested in 2025 was 13 years old with 77,330 miles.
Is the Audi Tt getting less reliable?
The fail rate fell 0.1 points to 20.1% from 2022 to 2025 while the median one tested aged 1 year. Ageing alone would predict about 1.9 points, so it is holding up better than the fleet average for its age.
First-attempt class 4 tests, 2025, from DVSA’s anonymised MOT data (OGL v3, retrieved 2026-09-12). DVSA records newer cars trim by trim; this page adds every Tt trim together. Year-on-year figures come from the same DVSA extracts for 2026 and earlier years. Full method on the pass rates hub.
DVSA has published 14 safety recalls naming the Audi Tt: Audi Tt recalls.
Other Audi models
Checking a particular Tt?
The odds above are the model. The car in front of you has its own record: every test, every advisory, the mileage at each one.
Due a test? Find an approved MOT station near you.