Infiniti Fx30D MOT pass rate & common failures
1,185 MOT tests on the Infiniti Fx30D (2010–2013) give it an 85.2% pass rate. Against all cars of a similar age (20.8% fail rate), the Fx30D comes out 6.0pp better. Its most common failure areas are tyres, lighting & signalling and emissions & environmental.
What the MOT record shows
No single area dominates — tyres (6.4%) and lighting & signalling (5.0%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are malfunction indicator lamp, tread depth and ball joint — malfunction indicator lamp alone was recorded 45 times.
Mileage matters less than usual here: the Fx30D fails 11.2% of the time in the 30-60k band and 14.3% at 150k+, a spread of only 3.1 points.
Advisories point at the next bill rather than this one: tyres was flagged on 20.1% of tests without failing them.
The trend is worsening — 12.2% of tests failed in 2021 against 20.7% in 2025, the usual pattern as a fleet ages.
How it compares
By model year
Every Fx30D model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 2011 | 64 | 82.8% | 17.2% | Suspension |
| 2012 | 482 | 86.5% | 13.5% | Tyres |
| 2013 | 631 | 84.2% | 15.8% | Tyres |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 6.4% | 76 |
| 2 | Lighting & signalling | 5.0% | 59 |
| 3 | Emissions & environmental | 4.6% | 54 |
| 4 | Suspension | 3.5% | 41 |
| 5 | Brakes | 3.4% | 40 |
| 6 | Visibility | 3.0% | 36 |
| 7 | Body, structure & corrosion | 1.4% | 16 |
| 8 | Steering | 0.4% | 5 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Malfunction indicator lamp | 45 |
| 2 | Tread depth | 42 |
| 3 | Ball joint | 31 |
| 4 | Tyre pressure monitoring system | 28 |
| 5 | Position lamp | 27 |
| 6 | Washers | 21 |
| 7 | Rigid brake pipes | 21 |
| 8 | Wipers | 20 |
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 | 20.1% | 238 |
| 2 | Suspension | 16.3% | 193 |
| 3 | Brakes | 15.8% | 187 |
| 4 | Other defects | 6.9% | 82 |
| 5 | Visibility | 3.9% | 46 |
| 6 | Steering | 3.8% | 45 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 30-60k | 98 | 11.2% |
| 60-90k | 487 | 12.5% |
| 90-120k | 416 | 17.8% |
| 120-150k | 123 | 17.9% |
| 150k+ | 56 | 14.3% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 262 | 12.2% |
| 2022 | 236 | 12.3% |
| 2023 | 254 | 16.1% |
| 2024 | 216 | 13.4% |
| 2025 | 217 | 20.7% |
What to check before buying a Infiniti Fx30D
- Tyres (6.4% 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 (5.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Emissions & environmental (4.6% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
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 Fx30D?
85.2% of the 1,185 Infiniti Fx30D MOT tests in this dataset passed, a 14.8% fail rate, across model years 2010–2013.
What does the Infiniti Fx30D most often fail its MOT on?
Tyres, recorded in 6.4% of tests, then lighting & signalling (5.0%).
How much does mileage affect Fx30D MOT results?
Fail rates run at 11.2% for cars in the 30-60k band and 14.3% for 150k+, a 3.1-point difference.
Methodology & source. Based on 1,185 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.