Renault Megane 2012: reliability & common MOT faults
Elevated MOT failure patterns for the 2012 Renault Megane include Linkage ball joints (front) (~3.4× peers) and Rear fog lamp (rear) (~3.3× peers). Based on UK DVSA open data for test year 2025 (3,734 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 3,734 failed first-attempt tests in test year 2025.
Linkage ball joints (front)
This failure pattern appears about 3.4× more often than on similar peer cars — recorded on 366 failed first-attempt tests; 9.8% of failed tests for this model year.
Front · 366 failures · ×3.4 vs similar cars · 9.8% of failed first tests · Likely common fault pattern
Rear fog lamp (rear)
This failure pattern appears about 3.3× more often than on similar peer cars — recorded on 87 failed first-attempt tests; 2.3% of failed tests for this model year.
Rear · 87 failures · ×3.3 vs similar cars · 2.3% 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 joints (front)
Suspension > Anti-roll bars > Linkage ball joints
|
Front | 366 | ×3.4 | 9.8% | Likely common fault pattern |
| 2 |
Rear fog lamp (rear)
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Rear | 87 | ×3.3 | 2.3% | Likely common fault pattern |
| 3 |
Coil spring (rear)
Suspension > Springs > Coil springs > Coil spring
|
Rear | 539 | ×3.3 | 14.4% | Likely common fault pattern |
| 4 |
Rear fog lamp
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Any | 135 | ×3.1 | 3.6% | Likely common fault pattern |
| 5 |
Track rod end
Steering > Steering linkage components > Track rod end
|
Any | 209 | ×3.1 | 5.6% | Likely common fault pattern |
| 6 |
Ball joint (front)
Suspension > Anti-roll bars > Ball joint
|
Front | 97 | ×3.1 | 2.6% | Likely common fault pattern |
| 7 |
Track rod end (front)
Steering > Steering linkage components > Track rod end
|
Front | 566 | ×3.0 | 15.2% | Possible elevated fault |
| 8 |
Parking brake performance (rear)
Brakes > Brake performance > Parking brake performance > Rbt > Parking brake performance
|
Rear | 94 | ×2.3 | 2.5% | Possible elevated fault |
| 9 |
Stop lamp (rear)
Lamps, reflectors and electrical equipment > Stop lamp
|
Rear | 316 | ×2.1 | 8.5% | Possible elevated fault |
| 10 |
Stop lamp
Lamps, reflectors and electrical equipment > Stop lamp
|
Any | 328 | ×2.1 | 8.8% | Possible elevated fault |
Only patterns that clear minimum sample and elevation thresholds are shown (at least 20 failures and 2.0× peer lift).
Wear patterns
These patterns look like wear or usage effects rather than model-specific design faults. Tyres, brake friction material, and alignment-related defects often track mileage and road use. They are not treated as a model design fault in our common-faults ranking.
| # | Pattern | Location | Failures | vs similar cars | Share of fails | Confidence |
|---|---|---|---|---|---|---|
| 1 |
Brake discs (rear)
Brakes > Mechanical brake components > Brake discs and drums > Brake discs
|
Rear | 179 | ×3.7 | 4.8% | Wear / usage pattern — not treated as a model design fault |
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 |
Side repeaters
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Side repeaters
|
Any | 27 | ×5.2 | 0.7% | Elevated vs peers |
| 2 |
Stop lamp (rear)
Lamps, reflectors and electrical equipment > Stop lamp
|
Rear | 42 | ×4.1 | 1.1% | Possible elevated fault |
| 3 |
Linkage ball joints (front)
Suspension > Anti-roll bars > Linkage ball joints
|
Front | 277 | ×3.9 | 7.4% | Likely common fault pattern |
| 4 |
Stop lamp
Lamps, reflectors and electrical equipment > Stop lamp
|
Any | 63 | ×3.2 | 1.7% | Possible elevated fault |
| 5 |
Ball joint (front)
Suspension > Anti-roll bars > Ball joint
|
Front | 46 | ×3.0 | 1.2% | Likely common fault pattern |
| 6 |
Wheel bearings (front)
Suspension > Wheel bearings
|
Front | 93 | ×2.8 | 2.5% | Elevated vs peers |
| 7 |
Track rod end
Steering > Steering linkage components > Track rod end
|
Any | 49 | ×2.8 | 1.3% | Likely common fault pattern |
| 8 |
Track rod end (front)
Steering > Steering linkage components > Track rod end
|
Front | 164 | ×2.7 | 4.4% | 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.