2015 Infiniti Q70 — MOT failures & pass rate
The 2015 Infiniti Q70 passed 85.3% of its 784 recorded MOT tests. All cars of a similar age fail 16.4% of the time, so this is 1.7pp better than the group it competes with. Failures cluster in brakes, tyres and suspension.
What the MOT record shows
No single area dominates — brakes (5.4%) and tyres (5.4%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are ball joint, brake pads and tread depth — ball joint alone was recorded 27 times.
A 120-150k example is materially riskier than a 0-30k one: 20.0% versus 9.7%.
Tyres is the most common advisory, noted on 27.7% of tests — work that passed today but is likely due soon.
The trend is worsening — 11.9% of tests failed in 2021 against 16.4% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 5.4% | 42 |
| 2 | Tyres | 5.4% | 42 |
| 3 | Suspension | 4.1% | 32 |
| 4 | Visibility | 2.4% | 19 |
| 5 | Lighting & signalling | 2.3% | 18 |
| 6 | Body, structure & corrosion | 1.1% | 9 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Ball joint | 27 |
| 2 | Brake pads | 26 |
| 3 | Tread depth | 21 |
| 4 | Wipers | 16 |
| 5 | Attachment | 14 |
| 6 | Registration plate lamp(s) | 11 |
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 | 27.7% | 217 |
| 2 | Brakes | 22.2% | 174 |
| 3 | Suspension | 21.4% | 168 |
| 4 | Other defects | 6.8% | 53 |
| 5 | Visibility | 4.5% | 35 |
| 6 | Lighting & signalling | 2.8% | 22 |
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 | 31 | 9.7% |
| 30-60k | 270 | 13.7% |
| 60-90k | 294 | 15.0% |
| 90-120k | 120 | 12.5% |
| 120-150k | 50 | 20.0% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 718 | 14.6% |
| Petrol | 34 | 17.6% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 160 | 11.9% |
| 2022 | 157 | 13.4% |
| 2023 | 155 | 14.8% |
| 2024 | 160 | 16.9% |
| 2025 | 152 | 16.4% |
What to check before buying a 2015 Q70
The failure pattern for this year is specific enough to inspect against: brakes accounted for 5.4% of tests. Start there.
- Brakes (5.4% 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.
- Tyres (5.4% 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.
- Suspension (4.1% 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
How many 2015 Infiniti Q70s pass their MOT?
85.3% of the 784 2015 Infiniti Q70 MOT tests in this dataset passed — a 14.7% fail rate.
What is the most common MOT failure on a 2015 Infiniti Q70?
Brakes, recorded in 5.4% of tests, followed by tyres (5.4%).
Does the 2015 Q70 get worse with mileage?
Its MOT fail rate rises from 9.7% in the 0-30k band to 20.0% in the 120-150k band.
Methodology & source. Based on 784 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.