2015 Yamaha Unclassified — MOT failures & pass rate
Across 381 MOT tests analysed for the 2015 Yamaha Unclassified, the most common recorded failure areas were lighting & signalling, other defects and brakes. Its pass rate of 91.9% was above the average for cars of a similar age (84.5%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 6.6% | 25 |
| 2 | Other defects | 3.1% | 12 |
| 3 | Brakes | 2.1% | 8 |
| 4 | Suspension | 1.8% | 7 |
| 5 | Visibility | 1.1% | 4 |
| 6 | Steering | 0.8% | 3 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Registration plates | 15 |
| 2 | Wheel bearings | 9 |
| 3 | Individual direction indicators | 6 |
| 4 | Rear reflectors | 6 |
| 5 | All direction indicators | 5 |
| 6 | Headlamp aim | 5 |
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 | 5.0% | 19 |
| 2 | Body, structure & corrosion | 5.0% | 19 |
| 3 | Tyres | 4.7% | 18 |
| 4 | Brakes | 2.4% | 9 |
| 5 | Lighting & signalling | 1.1% | 4 |
| 6 | Steering | 1.1% | 4 |
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 | 329 | 9.4% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 95 | 7.4% |
| 2022 | 80 | 8.8% |
| 2023 | 79 | 8.9% |
| 2024 | 59 | 8.5% |
| 2025 | 68 | 7.3% |
What to check before buying a 2015 Unclassified
Before buying a 2015 Yamaha Unclassified, focus on the areas it most often fails on. Lighting & signalling accounted for 6.6% of tests for this year.
- Lighting & signalling (6.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Other defects (3.1% of tests): Miscellaneous items not in the main categories. Typical repair: varies.
- Brakes (2.1% 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.
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 Yamaha Unclassifieds pass their MOT?
91.9% of the 381 2015 Yamaha Unclassified MOT tests in this dataset passed — a 8.1% fail rate.
What is the most common MOT failure on a 2015 Yamaha Unclassified?
Lighting & signalling, recorded in 6.6% of tests, followed by other defects (3.1%).
Methodology & source. Based on 381 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.