Peugeot 308 2015: reliability & common MOT faults
Elevated MOT failure patterns for the 2015 Peugeot 308 include Linkage ball joint dust cover (front) (~4.1× peers) and Ball joint dust cover (front) (~4.0× peers). Based on UK DVSA open data for test year 2025 (4,270 failed first-attempt tests), compared with similar age and mileage peers. Available test years: 2024, 2025.
Common faults
These are MOT failure patterns that show up more often on this registration year than on similar cars of the same class, age band, and mileage in the same test year (leave-one-out peer comparison; whole model family excluded).
Statistical patterns from MOT defect codes — not manufacturer TSBs, recalls, or a diagnosis of any individual car. Fail and advisory patterns are kept separate.
Based on 4,270 failed first-attempt tests in test year 2025.
Linkage ball joint dust cover (front)
This failure pattern appears about 4.1× more often than on similar peer cars — recorded on 343 failed first-attempt tests; 8.0% of failed tests for this model year.
Front · 343 failures · ×4.1 vs similar cars · 8.0% of failed first tests · Likely common fault pattern
Ball joint dust cover (front)
This failure pattern appears about 4.0× more often than on similar peer cars — recorded on 133 failed first-attempt tests; 3.1% of failed tests for this model year.
Front · 133 failures · ×4.0 vs similar cars · 3.1% of failed first tests · Likely common fault pattern
No patterns met the strongest callout thresholds on this page; showing the highest-lift rows that still cleared the display floors.
| # | Fault pattern | Location | Failures | vs similar cars | Share of fails | Confidence |
|---|---|---|---|---|---|---|
| 1 |
Linkage ball joint dust cover (front)
Suspension > Anti-roll bars > Linkage ball joint dust cover
|
Front | 343 | ×4.1 | 8.0% | Likely common fault pattern |
| 2 |
Ball joint dust cover (front)
Suspension > Anti-roll bars > Ball joint dust cover
|
Front | 133 | ×4.0 | 3.1% | Likely common fault pattern |
| 3 |
Drive shafts — Joints (front)
Body, chassis, structure > Transmission > Drive shafts > Joints
|
Front | 563 | ×3.4 | 13.2% | Likely common fault pattern |
| 4 |
Registration plate lamp(s) (rear)
Lamps, reflectors and electrical equipment > Registration plate lamp(s)
|
Rear | 216 | ×3.1 | 5.1% | Likely common fault pattern |
| 5 |
Registration plate lamp(s)
Lamps, reflectors and electrical equipment > Registration plate lamp(s)
|
Any | 282 | ×2.4 | 6.6% | Possible elevated fault |
Only patterns that clear minimum sample and elevation thresholds are shown (at least 20 failures and 2.0× peer lift).
Advisories
Advisory items recorded on failed first-attempt tests that appear elevated versus peers. Advisories are not a fail rate — they flag issues noted at the test, often before they become failures.
| # | Advisory pattern | Location | Notes | vs similar cars | Share | Confidence |
|---|---|---|---|---|---|---|
| 1 |
Exhaust system (rear)
Body, chassis, structure > Exhaust system
|
Rear | 124 | ×3.2 | 2.9% | Possible elevated fault |
| 2 |
Flexible brake hoses (rear)
Brakes > Flexible brake hoses
|
Rear | 60 | ×2.8 | 1.4% | Elevated vs peers |
| 3 |
Individual direction indicators (rear)
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Individual direction indicators
|
Rear | 66 | ×2.3 | 1.5% | Possible elevated fault |
FAQs
About this data
Universe. UK class 4 cars only; normal MOT tests (not retests); results pass, PRS, or fail; one first test per vehicle per calendar year.
PRS policy. PRS means the vehicle failed items that were fixed at the test station and then passed the same day. We count PRS as a first-attempt fail in headline rates so same-day repairs do not hide problems.
Peer baseline. We compare this model year with other class 4 cars of similar age and mileage in the same test year, excluding the whole model family so the car is not compared with itself (leave-one-out peer baseline).
Data years. Test years covered: 2024, 2025.
Limitations.
- MOT tests do not cover engine internals, gearboxes, or many electronic modules — so this is not a full reliability score.
- Common faults are inferred from MOT defect statistics, not manufacturer TSBs or recalls.
- Matching on age and mileage reduces but does not remove every usage or maintenance difference between cars.
- Pass rates and star scores appear only when those data marts are available; this page never invents them.
Display rules config: 1
Contains public sector information licensed under the Open Government Licence v3.0.