Vauxhall Corsa 2012: reliability & common MOT faults
Elevated MOT failure patterns for the 2012 Vauxhall Corsa include Service brake imbalance (front) (~20.2× peers) and Sub-frame (front) (~11.8× peers). Based on UK DVSA open data for test year 2025 (28,168 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 28,168 failed first-attempt tests in test year 2025.
Service brake imbalance (front)
This failure pattern appears about 20.2× more often than on similar peer cars — recorded on 922 failed first-attempt tests; 3.3% of failed tests for this model year.
Front · 922 failures · ×20.2 vs similar cars · 3.3% of failed first tests · Strong pattern — appears far more often than similar cars
Sub-frame (front)
This failure pattern appears about 11.8× more often than on similar peer cars — recorded on 1,228 failed first-attempt tests; 4.4% of failed tests for this model year.
Front · 1,228 failures · ×11.8 vs similar cars · 4.4% of failed first tests · Strong pattern — appears far more often than similar cars
| # | Fault pattern | Location | Failures | vs similar cars | Share of fails | Confidence |
|---|---|---|---|---|---|---|
| 1 |
Service brake imbalance (front)
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake imbalance
|
Front | 922 | ×20.2 | 3.3% | Strong pattern — appears far more often than similar cars |
| 2 |
Sub-frame (front)
Suspension > Sub-frames > Sub-frame
|
Front | 1,228 | ×11.8 | 4.4% | Strong pattern — appears far more often than similar cars |
| 3 |
Shock absorbers (rear)
Suspension > Shock absorbers
|
Rear | 2,663 | ×3.8 | 9.5% | Likely common fault pattern |
| 4 |
Malfunction indicator lamp
Noise, emissions and leaks > Exhaust emissions > Spark ignition > Malfunction indicator lamp
|
Any | 2,286 | ×3.2 | 8.1% | Likely common fault pattern |
| 5 |
Shock absorbers (front)
Suspension > Shock absorbers
|
Front | 1,152 | ×2.5 | 4.1% | Possible elevated fault |
| 6 |
Service brake performance (front)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Front | 1,033 | ×2.4 | 3.7% | Possible elevated fault |
| 7 |
Coil spring (front)
Suspension > Springs > Coil springs > Coil spring
|
Front | 4,254 | ×2.2 | 15.1% | Possible elevated fault |
| 8 |
Stop lamp (rear)
Lamps, reflectors and electrical equipment > Stop lamp
|
Rear | 2,200 | ×2.0 | 7.8% | Possible elevated fault |
| 9 |
Stop lamp
Lamps, reflectors and electrical equipment > Stop lamp
|
Any | 2,372 | ×2.0 | 8.4% | 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 |
Ball joint (front)
Suspension > Macpherson strut > Ball joint
|
Front | 94 | ×12.1 | 0.3% | Possible elevated fault |
| 2 |
Pins and bushes (front)
Suspension > Macpherson strut > Pins and bushes
|
Front | 1,123 | ×7.7 | 4.0% | Strong pattern — appears far more often than similar cars |
| 3 |
Pins and bushes
Suspension > Macpherson strut > Pins and bushes
|
Any | 34 | ×7.1 | 0.1% | Elevated vs peers |
| 4 |
Suspension arm (front)
Suspension > Suspension arms > Suspension arm
|
Front | 1,710 | ×4.4 | 6.1% | Likely common fault pattern |
| 5 |
Sub-frame condition (front)
Body, chassis, structure > Integral vehicle structure > Sub-frame > Sub-frame condition
|
Front | 198 | ×4.1 | 0.7% | Strong pattern — appears far more often than similar cars |
| 6 |
Sub-frame (front)
Suspension > Sub-frames > Sub-frame
|
Front | 2,794 | ×3.8 | 9.9% | Strong pattern — appears far more often than similar cars |
| 7 |
Shock absorbers (front)
Suspension > Shock absorbers
|
Front | 2,495 | ×3.3 | 8.9% | Possible elevated fault |
| 8 |
Macpherson strut
Suspension > Macpherson strut > Macpherson strut
|
Any | 35 | ×3.2 | 0.1% | Elevated vs peers |
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.