15,409 tests in 2025
Toyota Iq reliability and MOT pass rate
80.8% passed first time. The 19.2% fail rate is 3.4 points better than the all-car average, on a median example 15 years old with 69,491 miles.
Pass rate
80.8%
22.6% of all cars failed; 19.2% of these did.
Fixed on the day
7.1%
Passed after a defect was put right during the visit.
Median at test
69,491 mi
15 years old.
Fail rate by age
| Age at test | Tests | Fail rate |
|---|---|---|
| 3-5 years | 4 | — |
| 6-9 years | 4 | — |
| 10-13 years | 4,096 | 15.4% |
| 14+ years | 11,305 | 20.5% |
What the Iq 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.
- Suspension31 dangerous36.6%
- Lamps, reflectors and electrical equipment3 dangerous34.7%
- Brakes399 dangerous30.1%
- Visibility1 dangerous19.2%
- Tyres556 dangerous17.8%
- Noise, emissions and leaks9.5%
- Body, chassis, structure15 dangerous8.9%
- Seat belts and supplementary restraint systems3.6%
Is the Iq getting worse?
The fail rate rose 3.7 points to 19.1% from 2022 to 2025 while the median one tested aged 3 years. Ageing alone would predict about 5.3 points, so it is holding up better than the fleet average for its age.
| Year | Tests | Median age | Fail rate | All cars | |
|---|---|---|---|---|---|
| 2022 | 17,256 | 12 | 15.4% | 22.5% | |
| 2023 | 17,205 | 13 | 16.4% | 22.8% | |
| 2024 | 14,590 | 14 | 18.3% | 23.2% | |
| 2025 | 15,405 | 15 | 19.1% | 22.6% |
Fail rate is first attempts at class 4 tests. Median age is the age of a typical Iq 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 Iq in 2025, counted by how many tests each one appeared on.
- 1Linkage ball joint dust cover: ball joint dust cover no longer prevents the ingress of dirt395 tests
- 2Wipers: does not clear the windscreen effectively312 tests
- 3Position lamp: not working285 tests
- 4Rigid brake pipes: excessively corroded252 tests
- 5Brake pads: less than 1.5 mm thick247 tests
- 6Tread depth: tread depth below requirements of 1.6mm222 tests
- 7Headlamp aim: projected beam image is obviously incorrect204 tests
- 8Ball joint dust cover: ball joint dust cover no longer prevents the ingress of dirt190 tests
What wears out first
Advisories are the tester flagging wear that is still legal. A typical Iq 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.
- 1Condition: has a tear, caused by separation or partial failure of its structure2,171 tests
- 2Brake discs: in such a condition that it is seriously weakened1,845 tests
- 3Tread depth: tread depth below requirements of 1.6mm1,568 tests
- 4Rigid brake pipes: excessively corroded1,316 tests
- 5Brake pads: less than 1.5 mm thick1,278 tests
- 6Coil spring: corroded so that its cross sectional area is reduced and seriously weakened956 tests
- 7Pins and bushes: pin or bush excessively worn777 tests
- 8Flexible brake hoses: ferrule excessively corroded614 tests
Questions
What is the Toyota Iq MOT pass rate?
80.8% of the 15,409 Toyota Iq first-attempt MOTs in 2025 passed. The fail rate of 19.2% compares with 22.6% across all cars. A further 7.1% passed after a defect was fixed during the test visit.
What does a Toyota Iq usually fail on?
The single most common failure is "Linkage ball joint dust cover: ball joint dust cover no longer prevents the ingress of dirt", recorded on 395 failed tests, followed by "Wipers: does not clear the windscreen effectively" and "Position lamp: not working". By section, suspension appears in 36.6% of failures, lamps, reflectors and electrical equipment appears in 34.7% of failures, brakes appears in 30.1% of failures.
Does age change the odds?
Sharply. At 3 to 5 years old the fail rate was 0%; at 14+ years it was 20.5%. The median Toyota Iq tested in 2025 was 15 years old with 69,491 miles.
Is the Toyota Iq getting less reliable?
The fail rate rose 3.7 points to 19.1% from 2022 to 2025 while the median one tested aged 3 years. Ageing alone would predict about 5.3 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 Iq 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 4 safety recalls naming the Toyota Iq: Toyota Iq recalls.
Other Toyota models
- Yaris 20.4%
- Aygo 18.7%
- Verso 21.7%
- Rav-4 29.2%
- Estima 16.9%
- Yaris Cross 3.5%
- Land Cruiser 20.4%
- Proace 21.4%
- Alphard 22.2%
- Mr2 28.5%
Checking a particular Iq?
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.