Dacia Sandero 2017: reliability & common MOT faults
Elevated MOT failure patterns for the 2017 Dacia Sandero include Anti-roll bars — Linkage (front) (~51.7× peers) and Linkage pins and bushes (front) (~43.5× peers). Based on UK DVSA open data for test year 2025 (4,901 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 4,901 failed first-attempt tests in test year 2025.
Anti-roll bars — Linkage (front)
This failure pattern appears about 51.7× more often than on similar peer cars — recorded on 345 failed first-attempt tests; 7.0% of failed tests for this model year.
Front · 345 failures · ×51.7 vs similar cars · 7.0% of failed first tests · Strong pattern — appears far more often than similar cars
Linkage pins and bushes (front)
This failure pattern appears about 43.5× more often than on similar peer cars — recorded on 184 failed first-attempt tests; 3.8% of failed tests for this model year.
Front · 184 failures · ×43.5 vs similar cars · 3.8% of failed first tests · Strong pattern — appears far more often than similar cars
Headlamp levelling device
This failure pattern appears about 13.0× more often than on similar peer cars — recorded on 104 failed first-attempt tests; 2.1% of failed tests for this model year.
Any · 104 failures · ×13.0 vs similar cars · 2.1% 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 |
Anti-roll bars — Linkage (front)
Suspension > Anti-roll bars > Linkage
|
Front | 345 | ×51.7 | 7.0% | Strong pattern — appears far more often than similar cars |
| 2 |
Linkage pins and bushes (front)
Suspension > Anti-roll bars > Linkage pins and bushes
|
Front | 184 | ×43.5 | 3.8% | Strong pattern — appears far more often than similar cars |
| 3 |
Headlamp levelling device
Lamps, reflectors and electrical equipment > Headlamps > Headlamp levelling device
|
Any | 104 | ×13.0 | 2.1% | Strong pattern — appears far more often than similar cars |
| 4 |
Drive shafts — Joints (front)
Body, chassis, structure > Transmission > Drive shafts > Joints
|
Front | 530 | ×3.6 | 10.8% | Likely common fault pattern |
| 5 |
Coil spring (front)
Suspension > Springs > Coil springs > Coil spring
|
Front | 693 | ×2.9 | 14.1% | Possible elevated fault |
| 6 |
Catalyst emissions
Noise, emissions and leaks > Exhaust emissions > Spark ignition > Catalyst emissions
|
Any | 221 | ×2.4 | 4.5% | Possible elevated fault |
| 7 |
Headlamp (front)
Lamps, reflectors and electrical equipment > Headlamps > Headlamp
|
Front | 233 | ×2.0 | 4.8% | 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 |
Headlamp aim (front)
Lamps, reflectors and electrical equipment > Headlamp aim > Headlamp aim
|
Front | 505 | ×2.8 | 10.3% | Wear / usage pattern — not treated as a model design fault |
| 2 |
Headlamp aim
Lamps, reflectors and electrical equipment > Headlamp aim > Headlamp aim
|
Any | 563 | ×2.4 | 11.5% | Wear / usage pattern — not treated as a model design fault |
| 3 |
Headlamp aim not tested
Lamps, reflectors and electrical equipment > Headlamp aim > Headlamp aim not tested
|
Any | 42 | ×2.2 | 0.9% | Wear / usage pattern — not treated as a model design fault |
| 4 |
Headlamp aim not tested (front)
Lamps, reflectors and electrical equipment > Headlamp aim > Headlamp aim not tested
|
Front | 28 | ×2.0 | 0.6% | 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 |
Linkage pins and bushes (front)
Suspension > Anti-roll bars > Linkage pins and bushes
|
Front | 143 | ×15.9 | 2.9% | Strong pattern — appears far more often than similar cars |
| 2 |
Stop lamp (rear)
Lamps, reflectors and electrical equipment > Stop lamp
|
Rear | 27 | ×6.5 | 0.6% | Elevated vs peers |
| 3 |
Stop lamp
Lamps, reflectors and electrical equipment > Stop lamp
|
Any | 51 | ×6.4 | 1.0% | Elevated vs peers |
| 4 |
Pins and bushes (front)
Suspension > Anti-roll bars > Pins and bushes
|
Front | 32 | ×4.8 | 0.7% | Likely common fault pattern |
| 5 |
Suspension arm (front)
Suspension > Suspension arms > Suspension arm
|
Front | 51 | ×4.5 | 1.0% | Elevated vs peers |
| 6 |
Sub-frame (front)
Suspension > Sub-frames > Sub-frame
|
Front | 81 | ×3.9 | 1.7% | Elevated vs peers |
| 7 |
Pedal
Brakes > Service brake pedal or hand lever > Pedal
|
Any | 28 | ×3.9 | 0.6% | Elevated vs peers |
| 8 |
Macpherson strut (front)
Suspension > Macpherson strut > Macpherson strut
|
Front | 22 | ×3.2 | 0.4% | 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.