2017 Yamaha Unclassified — MOT failures & pass rate
Across 364 MOT tests analysed for the 2017 Yamaha Unclassified, the most common recorded failure areas were lighting & signalling, other defects and brakes. Its pass rate of 93.7% was above the average for cars of a similar age (88.3%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 6.0% | 22 |
| 2 | Other defects | 2.8% | 10 |
| 3 | Brakes | 2.2% | 8 |
| 4 | Tyres | 0.8% | 3 |
| 5 | Suspension | 0.8% | 3 |
| 6 | Visibility | 0.5% | 2 |
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 | 12 |
| 2 | Horn | 5 |
| 3 | Stop lamp | 5 |
| 4 | Pins and bushes | 5 |
| 5 | Headlamp aim | 5 |
| 6 | Rear reflectors | 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 | 5.8% | 21 |
| 2 | Tyres | 3.0% | 11 |
| 3 | Body, structure & corrosion | 3.0% | 11 |
| 4 | Brakes | 2.8% | 10 |
| 5 | Lighting & signalling | 1.9% | 7 |
| 6 | Other defects | 1.7% | 6 |
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 | 319 | 6.6% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 124 | 8.9% |
| 2022 | 72 | 6.9% |
| 2023 | 64 | 4.7% |
| 2024 | 52 | 3.9% |
| 2025 | 52 | 3.9% |
What to check before buying a 2017 Unclassified
Before buying a 2017 Yamaha Unclassified, focus on the areas it most often fails on. Lighting & signalling accounted for 6.0% of tests for this year.
- Lighting & signalling (6.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Other defects (2.8% of tests): Miscellaneous items not in the main categories. Typical repair: varies.
- Brakes (2.2% 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 2017 Yamaha Unclassifieds pass their MOT?
93.7% of the 364 2017 Yamaha Unclassified MOT tests in this dataset passed — a 6.3% fail rate.
What is the most common MOT failure on a 2017 Yamaha Unclassified?
Lighting & signalling, recorded in 6.0% of tests, followed by other defects (2.8%).
Methodology & source. Based on 364 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.