2015 Dacia Logan — MOT failures & pass rate
The 2015 Dacia Logan passed 79.1% of its 19,219 recorded MOT tests. That is 5.4 percentage points worse than small family cars of a similar age, which fail at 15.5%. Failures cluster in lighting & signalling, suspension and visibility.
What the MOT record shows
Lighting & signalling dominates the failure mix at 12.5% of all tests — 4.6 points clear of suspension, so it is the first thing to check.
At component level the recurring items are headlamp aim, ball joint and tread depth — headlamp aim alone was recorded 1,316 times.
A 150k+ example is materially riskier than a 0-30k one: 27.4% versus 9.0%.
Split by fuel, diesel examples fail 1.7pp more often than petrol ones (21.6% vs 19.9%) — worth weighing if you have a choice.
Advisories point at the next bill rather than this one: tyres was flagged on 26.7% of tests without failing them.
The trend is worsening — 17.6% of tests failed in 2021 against 23.3% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 12.5% | 2,397 |
| 2 | Suspension | 7.9% | 1,515 |
| 3 | Visibility | 5.7% | 1,087 |
| 4 | Tyres | 5.7% | 1,088 |
| 5 | Brakes | 5.4% | 1,040 |
| 6 | Steering | 1.2% | 237 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp aim | 1,316 |
| 2 | Ball joint | 788 |
| 3 | Tread depth | 785 |
| 4 | Horn | 735 |
| 5 | Washers | 651 |
| 6 | Wipers | 594 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 26.7% | 5,133 |
| 2 | Brakes | 18.0% | 3,463 |
| 3 | Suspension | 8.7% | 1,674 |
| 4 | Other defects | 7.1% | 1,375 |
| 5 | Lighting & signalling | 5.7% | 1,102 |
| 6 | Visibility | 4.1% | 792 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 1,394 | 9.0% |
| 30-60k | 5,915 | 17.0% |
| 60-90k | 6,069 | 22.8% |
| 90-120k | 3,207 | 25.1% |
| 120-150k | 1,316 | 25.8% |
| 150k+ | 1,312 | 27.4% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 11,865 | 21.6% |
| Petrol | 7,354 | 19.9% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 3,827 | 17.6% |
| 2022 | 3,888 | 19.3% |
| 2023 | 3,951 | 22.5% |
| 2024 | 3,837 | 21.9% |
| 2025 | 3,716 | 23.3% |
What to check before buying a 2015 Logan
On a 2015 Logan, lighting & signalling is what the MOT record says goes wrong most — it appeared in 12.5% of tests. Check these areas before you commit.
- Lighting & signalling (12.5% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (7.9% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
- Visibility (5.7% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£150.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2015 Dacia Logans pass their MOT?
79.1% of the 19,219 2015 Dacia Logan MOT tests in this dataset passed — a 20.9% fail rate.
What is the most common MOT failure on a 2015 Dacia Logan?
Lighting & signalling, recorded in 12.5% of tests, followed by suspension (7.9%).
Does the 2015 Logan get worse with mileage?
Its MOT fail rate rises from 9.0% in the 0-30k band to 27.4% in the 150k+ band.
Methodology & source. Based on 19,219 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.