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2,282 tests in 2025

Infiniti Q50 reliability and MOT pass rate

79.3% passed first time. The 20.7% fail rate is 1.9 points better than the all-car average, on a median example 9 years old with 80,681 miles.

MOT pass rates / Infiniti

Pass rate

79.3%

22.6% of all cars failed; 20.7% of these did.

Fixed on the day

3.5%

Passed after a defect was put right during the visit.

Median at test

80,681 mi

9 years old.

Fail rate by age

Age at testTestsFail rate
3-5 years1—
6-9 years1,21419.4%
10-13 years1,06722.1%
14+ years0—

What the Q50 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.

  1. Suspension7 dangerous35.4%
  2. Tyres181 dangerous35.2%
  3. Brakes115 dangerous34.1%
  4. Lamps, reflectors and electrical equipment20.6%
  5. Visibility8.5%
  6. Noise, emissions and leaks8.3%
  7. Body, chassis, structure1 dangerous4.7%
  8. Road Wheels8 dangerous3%

Is the Q50 getting worse?

The fail rate rose 4.4 points to 20.7% from 2022 to 2025 while the median one tested aged 3 years. Ageing alone would predict about 7.5 points, so it is holding up better than the fleet average for its age.

YearTestsMedian ageFail rate All cars
20222,619616.3%22.5%
20232,578718.2%22.8%
20242,132819.2%23.2%
20252,276920.7%22.6%

Fail rate is first attempts at class 4 tests. Median age is the age of a typical Q50 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 Q50 in 2025, counted by how many tests each one appeared on.

  1. 1Brake pads: less than 1.5 mm thick79 tests
  2. 2Tread depth: tread depth below requirements of 1.6mm67 tests
  3. 3Linkage ball joints: ball joint excessively worn56 tests
  4. 4Ball joint: ball joint excessively worn50 tests
  5. 5Condition: has ply or cords exposed49 tests
  6. 6Malfunction indicator lamp: inoperative or indicates a malfunction27 tests
  7. 7Position lamp: not working27 tests
  8. 8Condition: has a cut in excess of the requirements deep enough to reach the ply or cords26 tests

What wears out first

Advisories are the tester flagging wear that is still legal. A typical Q50 collects 2.66 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.

  1. 1Tread depth: tread depth below requirements of 1.6mm420 tests
  2. 2Linkage ball joints: ball joint excessively worn344 tests
  3. 3Brake pads: less than 1.5 mm thick291 tests
  4. 4Ball joint: ball joint excessively worn216 tests
  5. 5Brake discs: in such a condition that it is seriously weakened202 tests
  6. 6Sub-frame: corroded and seriously weakened99 tests
  7. 7Tread depth: tread pattern not visible over the whole tread area when minimum depth required is 1.0mm75 tests
  8. 8Condition: has a tear, caused by separation or partial failure of its structure72 tests

Questions

What is the Infiniti Q50 MOT pass rate?

79.3% of the 2,282 Infiniti Q50 first-attempt MOTs in 2025 passed. The fail rate of 20.7% compares with 22.6% across all cars. A further 3.5% passed after a defect was fixed during the test visit.

What does a Infiniti Q50 usually fail on?

The single most common failure is "Brake pads: less than 1.5 mm thick", recorded on 79 failed tests, followed by "Tread depth: tread depth below requirements of 1.6mm" and "Linkage ball joints: ball joint excessively worn". By section, suspension appears in 35.4% of failures, tyres appears in 35.2% of failures, brakes appears in 34.1% of failures.

Does age change the odds?

Sharply. At 3 to 5 years old the fail rate was 0%; at 10-13 years it was 22.1%. The median Infiniti Q50 tested in 2025 was 9 years old with 80,681 miles.

Is the Infiniti Q50 getting less reliable?

The fail rate rose 4.4 points to 20.7% from 2022 to 2025 while the median one tested aged 3 years. Ageing alone would predict about 7.5 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 Q50 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 7 safety recalls naming the Infiniti Q50: Infiniti Q50 recalls.

Other Infiniti models

Checking a particular Q50?

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.