2011 Infiniti Ex — MOT failures & pass rate
259 MOT tests on the 2011 Infiniti Ex are in this dataset, and 79.5% of them passed. All cars of a similar age fail 23.0% of the time, so this is 2.5pp better than the group it competes with. Failures cluster in suspension, brakes and emissions & environmental.
What the MOT record shows
Suspension dominates the failure mix at 9.7% of all tests — 3.1 points clear of brakes, so it is the first thing to check.
At component level the recurring items are malfunction indicator lamp, ball joint and washers — malfunction indicator lamp alone was recorded 14 times.
Mileage matters less than usual here: the 2011 Ex fails 20.0% of the time in the 30-60k band and 20.3% at 90-120k, a spread of only 0.3 points.
Advisories point at the next bill rather than this one: suspension was flagged on 33.2% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 9.7% | 25 |
| 2 | Brakes | 6.6% | 17 |
| 3 | Emissions & environmental | 5.8% | 15 |
| 4 | Visibility | 5.4% | 14 |
| 5 | Lighting & signalling | 4.6% | 12 |
| 6 | Tyres | 2.3% | 6 |
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 | 14 |
| 2 | Ball joint | 11 |
| 3 | Washers | 9 |
| 4 | Coil spring | 9 |
| 5 | Rigid brake pipes | 7 |
| 6 | Brake pads | 6 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 33.2% | 86 |
| 2 | Tyres | 28.2% | 73 |
| 3 | Brakes | 22.4% | 58 |
| 4 | Lighting & signalling | 7.3% | 19 |
| 5 | Other defects | 6.6% | 17 |
| 6 | Steering | 5.0% | 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 |
|---|---|---|
| 30-60k | 30 | 20.0% |
| 60-90k | 117 | 17.1% |
| 90-120k | 79 | 20.3% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 222 | 20.7% |
| Petrol | 37 | 18.9% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 60 | 21.7% |
| 2022 | 56 | 25.0% |
| 2023 | 50 | 14.0% |
| 2024 | 50 | 20.0% |
| 2025 | 43 | 20.9% |
What to check before buying a 2011 Ex
On a 2011 Ex, suspension is what the MOT record says goes wrong most — it appeared in 9.7% of tests. Check these areas before you commit.
- Suspension (9.7% 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.
- Brakes (6.6% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
- Emissions & environmental (5.8% 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
How many 2011 Infiniti Exs pass their MOT?
79.5% of the 259 2011 Infiniti Ex MOT tests in this dataset passed — a 20.5% fail rate.
What is the most common MOT failure on a 2011 Infiniti Ex?
Suspension, recorded in 9.7% of tests, followed by brakes (6.6%).
Does the 2011 Ex get worse with mileage?
Its MOT fail rate rises from 20.0% in the 30-60k band to 20.3% in the 90-120k band.
Methodology & source. Based on 259 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.