Infiniti Qx30 MOT pass rate & common failures
Across 4 model years and 1,677 tests, the Infiniti Qx30 passes its MOT 90.9% of the time. That is 3.2 percentage points better than all cars of a similar age, which fail at 12.2%. Its most common failure areas are tyres, lighting & signalling and suspension.
What the MOT record shows
No single area dominates — tyres (2.7%) and lighting & signalling (2.4%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are tread depth, headlamp aim and coil spring — tread depth alone was recorded 30 times.
Mileage is the strongest signal on the record: 6.2% of 0-30k cars fail, rising to 13.7% once past 90-120k — 2.2× the risk.
Tyres is the most common advisory, noted on 21.7% of tests — work that passed today but is likely due soon.
The trend is worsening — 4.5% of tests failed in 2021 against 13.0% in 2025, the usual pattern as a fleet ages.
How it compares
By model year
Every Qx30 model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 2016 | 289 | 90.3% | 9.7% | Suspension |
| 2017 | 721 | 90.4% | 9.6% | Tyres |
| 2018 | 447 | 91.5% | 8.5% | Tyres |
| 2019 | 220 | 92.3% | 7.7% | Brakes |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 2.7% | 46 |
| 2 | Lighting & signalling | 2.4% | 41 |
| 3 | Suspension | 2.3% | 38 |
| 4 | Visibility | 1.6% | 26 |
| 5 | Brakes | 1.5% | 25 |
| 6 | Emissions & environmental | 0.8% | 14 |
| 7 | Body, structure & corrosion | 0.6% | 10 |
| 8 | Road wheels | 0.2% | 4 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Tread depth | 30 |
| 2 | Headlamp aim | 28 |
| 3 | Coil spring | 26 |
| 4 | Brake pads | 19 |
| 5 | Headlamp | 18 |
| 6 | Washers | 17 |
| 7 | Malfunction indicator lamp | 14 |
| 8 | Position lamp | 9 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 21.7% | 364 |
| 2 | Brakes | 14.7% | 247 |
| 3 | Other defects | 4.8% | 80 |
| 4 | Suspension | 3.4% | 57 |
| 5 | Visibility | 1.6% | 26 |
| 6 | Lighting & signalling | 0.8% | 13 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 418 | 6.2% |
| 30-60k | 880 | 9.0% |
| 60-90k | 294 | 11.2% |
| 90-120k | 73 | 13.7% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 1,616 | 9.2% |
| Petrol | 61 | 6.6% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 288 | 4.5% |
| 2022 | 343 | 7.3% |
| 2023 | 355 | 9.9% |
| 2024 | 344 | 9.9% |
| 2025 | 347 | 13.0% |
What to check before buying a Infiniti Qx30
- Tyres (2.7% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
- Lighting & signalling (2.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (2.3% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
What is the MOT pass rate for the Infiniti Qx30?
90.9% of the 1,677 Infiniti Qx30 MOT tests in this dataset passed, a 9.1% fail rate, across model years 2016–2019.
What does the Infiniti Qx30 most often fail its MOT on?
Tyres, recorded in 2.7% of tests, then lighting & signalling (2.4%).
How much does mileage affect Qx30 MOT results?
Fail rates run at 6.2% for cars in the 0-30k band and 13.7% for 90-120k, a 7.5-point difference.
Methodology & source. Based on 1,677 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.