2011 Infiniti Fx — MOT failures & pass rate
712 MOT tests on the 2011 Infiniti Fx are in this dataset, and 86.7% of them passed. All cars of a similar age fail 23.1% of the time, so this is 9.7pp better than the group it competes with. Failures cluster in lighting & signalling, suspension and tyres.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 8.3% of tests against 3.9% for the next-worst category.
At component level the recurring items are position lamp, tread depth and ball joint — position lamp alone was recorded 29 times.
Mileage is the strongest signal on the record: 8.8% of 30-60k cars fail, rising to 15.0% once past 120-150k.
Tyres is the most common advisory, noted on 22.2% of tests — work that passed today but is likely due soon.
The trend is worsening — 9.2% of tests failed in 2021 against 16.9% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 8.3% | 59 |
| 2 | Suspension | 3.9% | 28 |
| 3 | Tyres | 3.5% | 25 |
| 4 | Emissions & environmental | 3.4% | 24 |
| 5 | Visibility | 3.1% | 22 |
| 6 | Brakes | 2.4% | 17 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Position lamp | 29 |
| 2 | Tread depth | 25 |
| 3 | Ball joint | 21 |
| 4 | Malfunction indicator lamp | 19 |
| 5 | Rear fog lamp | 16 |
| 6 | Washers | 15 |
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 | 22.2% | 158 |
| 2 | Brakes | 20.2% | 144 |
| 3 | Suspension | 19.5% | 139 |
| 4 | Emissions & environmental | 7.6% | 54 |
| 5 | Lighting & signalling | 4.5% | 32 |
| 6 | Body, structure & corrosion | 4.1% | 29 |
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 | 57 | 8.8% |
| 60-90k | 246 | 10.2% |
| 90-120k | 269 | 16.4% |
| 120-150k | 113 | 15.0% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 580 | 13.3% |
| Petrol | 132 | 13.6% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 152 | 9.2% |
| 2022 | 148 | 10.8% |
| 2023 | 150 | 15.3% |
| 2024 | 138 | 15.2% |
| 2025 | 124 | 16.9% |
What to check before buying a 2011 Fx
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 8.3% of tests. Start there.
- Lighting & signalling (8.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (3.9% 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.
- Tyres (3.5% 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.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2011 Infiniti Fxs pass their MOT?
86.7% of the 712 2011 Infiniti Fx MOT tests in this dataset passed — a 13.3% fail rate.
What is the most common MOT failure on a 2011 Infiniti Fx?
Lighting & signalling, recorded in 8.3% of tests, followed by suspension (3.9%).
Does the 2011 Fx get worse with mileage?
Its MOT fail rate rises from 8.8% in the 30-60k band to 15.0% in the 120-150k band.
Methodology & source. Based on 712 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.