2017 Infiniti Q30 MOT pass rate: 84.6% (7,550 tests)
Is the 2017 Q30 getting worse?
Pass rate of 2017-registered cars across recent test years:
| Test year | Pass rate | |
|---|---|---|
| 2023 | 87.3% +1.5 vs same-age |
|
| 2024 | 85.3% +1.5 vs same-age |
|
| 2025 | 81.1% -1.3 vs same-age |
The raw rate normally falls as cars age. The “vs same-age” figure compares this cohort with all UK cars registered in the same year, so normal ageing is not mistaken for a bad model year.
What fails on a 2017 Q30
| # | System | Defects recorded | Share |
|---|---|---|---|
| 1 | Suspension | 514 | 24.4% |
| 2 | Tyres | 495 | 23.5% |
| 3 | Lamps, reflectors and electrical equipment | 368 | 17.5% |
| 4 | Brakes | 342 | 16.3% |
| 5 | Visibility | 155 | 7.4% |
| 6 | Noise, emissions and leaks | 98 | 4.7% |
All Q30 years compared
| Registration year | Tests | Pass rate | Vs same-age | Median mileage |
|---|---|---|---|---|
| 2016 | 5,269 | 84.2% | +2.9 pts | 63,372 |
| 2017 (this page) | 7,550 | 84.6% | +0.6 pts | 54,296 |
- Free MOT history checkThe exact car’s failures, advisories and mileage trail — sellers can’t edit it
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- XTOOL diagnostic toolsXTOOL code readers for petrol and diesel cars
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FAQs
Is a 2017 Infiniti Q30 reliable?
2017-registered examples passed 84.6% of their MOT tests (7,550 tests, 2023–2025), +0.6 points versus all UK cars registered in the same year. At roughly 9 years old with a median 54,296 miles, condition now varies car by car — always check the individual MOT history.
What mileage is too high for a 2017 Q30?
The median tested example shows 54,296 miles. Anything far beyond that isn't automatically bad — a motorway-mile car with consistent service records often beats a low-mileage school-run car — but price accordingly and scrutinise the mileage trail for gaps or drops.
Should I buy the petrol or diesel 2017 Q30?
In this cohort petrols pass 87.2% of tests against 83.9% for diesels. Mileage and use can explain part of that gap, so treat it as a reason to inspect DPF and emissions history, not a fuel-type verdict.
Source: DVSA Anonymised MOT tests and results, 2023–2025 extracts (96 million Class 4 initial tests; retests excluded). Only vehicles old enough for a routine first MOT are included. Age-adjusted figures compare the model-year cohort with all vehicles of the same registration year tested in the same calendar year. Contains public sector information licensed under OGL v3.0.