4,500 tests in 2025
Infiniti Q30 reliability and MOT pass rate
81.9% passed first time. The 18.1% fail rate is 4.5 points better than the all-car average, on a median example 8 years old with 64,206 miles.
Pass rate
81.9%
22.6% of all cars failed; 18.1% of these did.
Fixed on the day
3.4%
Passed after a defect was put right during the visit.
Median at test
64,206 mi
8 years old.
Fail rate by age
| Age at test | Tests | Fail rate |
|---|---|---|
| 3-5 years | 0 | — |
| 6-9 years | 4,490 | 18.1% |
| 10-13 years | 10 | — |
| 14+ years | 0 | — |
What the Q30 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.
- Suspension1 dangerous41.5%
- Tyres232 dangerous27.6%
- Brakes104 dangerous19.7%
- Lamps, reflectors and electrical equipment1 dangerous18.9%
- Visibility10.7%
- Noise, emissions and leaks8.6%
- Seat belts and supplementary restraint systems3.8%
- Body, chassis, structure1 dangerous3.6%
Is the Q30 getting worse?
The fail rate rose 7.8 points to 18.1% from 2022 to 2025 while the median one tested aged 3 years, which is about what ageing alone predicts (6.6 points). Read it as the fleet getting older rather than the model changing.
| Year | Tests | Median age | Fail rate | All cars | |
|---|---|---|---|---|---|
| 2022 | 4,898 | 5 | 10.3% | 22.5% | |
| 2023 | 4,874 | 6 | 12.7% | 22.8% | |
| 2024 | 4,129 | 7 | 14.9% | 23.2% | |
| 2025 | 4,500 | 8 | 18.1% | 22.6% |
Fail rate is first attempts at class 4 tests. Median age is the age of a typical Q30 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 Q30 in 2025, counted by how many tests each one appeared on.
- 1Coil spring: fractured or broken145 tests
- 2Linkage ball joint dust cover: ball joint dust cover no longer prevents the ingress of dirt112 tests
- 3Tread depth: tread depth below requirements of 1.6mm92 tests
- 4Brake pads: less than 1.5 mm thick83 tests
- 5Malfunction indicator lamp: inoperative or indicates a malfunction64 tests
- 6Ball joint dust cover: ball joint dust cover no longer prevents the ingress of dirt46 tests
- 7Position lamp: not working43 tests
- 8Condition: has a cut in excess of the requirements deep enough to reach the ply or cords41 tests
What wears out first
Advisories are the tester flagging wear that is still legal. A typical Q30 collects 2.24 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 1.6mm662 tests
- 2Condition: has a tear, caused by separation or partial failure of its structure619 tests
- 3Brake discs: in such a condition that it is seriously weakened518 tests
- 4Brake pads: less than 1.5 mm thick415 tests
- 5Brake discs: significantly and obviously worn212 tests
- 6Non-component advisories: Nail in tyre117 tests
- 7Non-component advisories: Child Seat fitted not allowing full inspection of adult belt111 tests
- 8Ball joint: ball joint excessively worn101 tests
Questions
What is the Infiniti Q30 MOT pass rate?
81.9% of the 4,500 Infiniti Q30 first-attempt MOTs in 2025 passed. The fail rate of 18.1% compares with 22.6% across all cars. A further 3.4% passed after a defect was fixed during the test visit.
What does a Infiniti Q30 usually fail on?
The single most common failure is "Coil spring: fractured or broken", recorded on 145 failed tests, followed by "Linkage ball joint dust cover: ball joint dust cover no longer prevents the ingress of dirt" and "Tread depth: tread depth below requirements of 1.6mm". By section, suspension appears in 41.5% of failures, tyres appears in 27.6% of failures, brakes appears in 19.7% of failures.
Does age change the odds?
Sharply. At 3 to 5 years old the fail rate was n/a%; at 6-9 years it was 18.1%. The median Infiniti Q30 tested in 2025 was 8 years old with 64,206 miles.
Is the Infiniti Q30 getting less reliable?
The fail rate rose 7.8 points to 18.1% from 2022 to 2025 while the median one tested aged 3 years, which is about what ageing alone predicts (6.6 points). Read it as the fleet getting older rather than the model changing.
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 Q30 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 6 safety recalls naming the Infiniti Q30: Infiniti Q30 recalls.
Other Infiniti models
- Q50 20.7%
Checking a particular Q30?
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.