MOT failure data · 2025
Dacia Logan MOT problems
Across every Dacia Logan that failed its 2025 MOT, the defect testers recorded most often was tread depth tread depth below requirements of 1.6mm, on 6.19% of failure items. The broadest problem area was lamps, reflectors and electrical equipment at 24.69%. These are recorded defects across the model, not a diagnosis of any one car.
Most common Dacia Logan MOT failures
| # | Recorded defect | Area | Share |
|---|---|---|---|
| 1 | Tread depth tread depth below requirements of 1.6mm | Tyres | 6.19% |
| 2 | Ball joint ball joint excessively worn | Suspension | 5.01% |
| 3 | Headlamp aim too low | Lamps, reflectors and electrical equipment | 3.87% |
| 4 | Wipers does not clear the windscreen effectively | Visibility | 3.71% |
| 5 | Coil spring fractured or broken | Suspension | 3.43% |
| 6 | Brake pads less than 1.5 mm thick | Brakes | 3.15% |
| 7 | Horn not working | Lamps, reflectors and electrical equipment | 3.01% |
| 8 | Headlamp not working on dipped beam | Lamps, reflectors and electrical equipment | 2.91% |
| 9 | Washers provides insufficient washer liquid | Visibility | 2.73% |
| 10 | Track rod end ball joint has excessive play | Steering | 2.54% |
Shares are of all recorded failure items for this model, so they sum to less than 100% — a single failed test often records several defects, and the long tail below the top 10 is not shown.
What this means if you are buying one
Use it as a viewing checklist. If you are looking at a Dacia Logan, these are the areas worth inspecting and worth asking about — and worth reading the car's own MOT history for, since a defect that keeps reappearing as an advisory is a better signal than any model-wide average.
The MOT record also has hard limits: it does not check the engine, clutch or gearbox, and it says nothing about outstanding finance, insurance write-off history, stolen markers or whether the mileage is genuine. Our used Dacia Logan buying guide covers what to check beyond the MOT.
Checking a specific Dacia Logan?
Enter its registration for finance, write-off, stolen, mileage and keeper history.
Other Dacia models
Dacia Logan MOT FAQs
What does a Dacia Logan most commonly fail its MOT on?
The single most recorded defect on Dacia Logan cars failing their 2025 MOT was "tread depth tread depth below requirements of 1.6mm", appearing on 6.19% of failure items.
Does this mean my Dacia Logan will fail?
No. This is what testers recorded across every Dacia Logan that failed in 2025. It shows where this model tends to need attention, not the condition of any individual car. The Dacia Logan passed 76.23% of its initial tests.
How do I see a specific Dacia Logan's MOT history?
Enter its registration on our free MOT history check to see that car's own test results, advisories and recorded mileages.
See also: Dacia Logan MOT pass rate · used Dacia Logan buying guide · free MOT history check
Defect counts from the DVSA MOT Anonymised test-item data for 2025 (class 4 initial tests, failure items only — advisories and minor defects excluded), licensed under the Open Government Licence v3.0.