2015 Peugeot 508 — MOT failures & pass rate
The 2015 Peugeot 508 passed 83.1% of its 6,510 recorded MOT tests. That is effectively the same as large family cars of a similar age (16.9% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in lighting & signalling, tyres and brakes.
What the MOT record shows
No single area dominates — lighting & signalling (6.0%) and tyres (5.9%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are tread depth, joints and coil spring — tread depth alone was recorded 291 times.
Mileage is the strongest signal on the record: 12.0% of 0-30k cars fail, rising to 20.8% once past 150k.
Tyres is the most common advisory, noted on 24.2% of tests — work that passed today but is likely due soon.
The trend is worsening — 13.8% of tests failed in 2021 against 20.0% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 6.0% | 391 |
| 2 | Tyres | 5.9% | 383 |
| 3 | Brakes | 4.5% | 296 |
| 4 | Suspension | 4.5% | 296 |
| 5 | Body, structure & corrosion | 3.2% | 208 |
| 6 | Visibility | 2.4% | 159 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Tread depth | 291 |
| 2 | Joints | 217 |
| 3 | Coil spring | 197 |
| 4 | Registration plate lamp(s) | 176 |
| 5 | Brake pads | 167 |
| 6 | Headlamp aim | 124 |
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 | 24.2% | 1,573 |
| 2 | Brakes | 20.4% | 1,331 |
| 3 | Lighting & signalling | 9.3% | 603 |
| 4 | Suspension | 9.2% | 599 |
| 5 | Other defects | 6.5% | 423 |
| 6 | Emissions & environmental | 5.0% | 328 |
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 | 224 | 12.0% |
| 30-60k | 1,542 | 13.3% |
| 60-90k | 2,007 | 17.7% |
| 90-120k | 1,483 | 18.0% |
| 120-150k | 764 | 19.0% |
| 150k+ | 490 | 20.8% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,339 | 13.8% |
| 2022 | 1,355 | 15.5% |
| 2023 | 1,311 | 16.5% |
| 2024 | 1,294 | 19.2% |
| 2025 | 1,211 | 20.0% |
What to check before buying a 2015 508
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 6.0% of tests. Start there.
- 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.
- Tyres (5.9% 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.
- Brakes (4.5% 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 Peugeot 508s pass their MOT?
83.1% of the 6,510 2015 Peugeot 508 MOT tests in this dataset passed — a 16.9% fail rate.
What is the most common MOT failure on a 2015 Peugeot 508?
Lighting & signalling, recorded in 6.0% of tests, followed by tyres (5.9%).
Does the 2015 508 get worse with mileage?
Its MOT fail rate rises from 12.0% in the 0-30k band to 20.8% in the 150k+ band.
Methodology & source. Based on 6,510 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.