MOT performance
Dacia Logan diesel: MOT pass rate and common failures
Of 15,759 MOT tests on diesel Dacia Logans in 2023–2024 (on average 6.8 years old at test, median 74,214 miles), 68.4% passed first time, against 72.9% of 15,817 petrol Dacia Logan tests. Allowing for age, mileage and fuel, diesel Dacia Logans failed 28% more often than comparable cars — 1.28× against 1.29× for the Dacia Logan as a whole.
15,759 MOT tests on 7,695 vehicles, 2023–2024 · Source: DVSA (Open Government Licence) · Analysis: 73 Auto
Check a specific car's MOT history and running costsAt a glance
| Figure | Value | Basis |
|---|---|---|
| First-time pass rate | 68.4% | ±0.7 pts (95%), n = 15,759 |
| All Dacia Logans | 70.6% | n = 31,576 |
| Failures vs similar cars | 1.28× | same age, mileage and fuel = 1.00; Dacia Logan overall 1.29× |
| Tests with a dangerous defect | 9.4% | n = 15,759 |
| Average age at test | 6.8 years | n = 15,759 |
| Registration years covered | 2008–2021 | DVSA first-use date |
Diesel against the other Dacia Logan fuels
Official DVSA test results by fuel, with 73 Auto's adjusted ratio (failures against cars of the same age, mileage and fuel).
| Fuel | Tests | Average age | First-time pass | vs similar cars | Dangerous |
|---|---|---|---|---|---|
| Petrol | 15,817 | 5.9 yrs | 72.9% | +31% | 7.0% |
| Diesel | 15,759 | 6.8 yrs | 68.4% | +28% | 9.4% |
Where diesel Dacia Logans differ
- Steering: diesel Dacia Logans failed 28% more often than the Dacia Logan overall, relative to comparable cars (1.35× vs 1.06×).
- Body, chassis and structure: diesel Dacia Logans failed 25% less often than the Dacia Logan overall, relative to comparable cars (0.68× vs 0.90×).
| Area | Diesel (vs similar) | All Dacia Logans (vs similar) |
|---|---|---|
| Lights, reflectors and electrical | 14.9% (+81%) | 13.7% (+89%) |
| Suspension | 8.5% (+35%) | 6.4% (+21%) |
| Driver's view of the road | 6.8% (+81%) | 7.1% (+86%) |
| Brakes | 6.5% (+20%) | 5.4% (+13%) |
| Tyres | 6.2% (-7%) | 5.9% (-6%) |
| Noise, emissions and leaks | 2.1% (-15%) | 2.0% (-6%) |
| Steering | 1.7% (+36%) | 1.2% (+6%) |
| Body, chassis and structure | 1.4% (-32%) | 1.5% (-10%) |
| Seat belts and airbags | 0.9% (+29%) | 0.8% (+43%) |
Most common diesel Dacia Logan failure items
| Item | Area | Share of tests |
|---|---|---|
| Headlamp aim: too low | Lights, reflectors and electrical | 4.17% |
| Ball joint: ball joint excessively worn | Suspension | 2.93% |
| Tread depth: tread depth below requirements of 1.6mm | Tyres | 2.88% |
| Wipers: does not clear the windscreen effectively | Driver's view of the road | 2.61% |
| Washers: provides insufficient washer liquid | Driver's view of the road | 2.36% |
Pass rate by age, by fuel
| Age at test (years) | diesel pass rate (tests) | petrol pass rate (tests) |
|---|---|---|
| 3-4 | 73.4% (1,843) | 78.4% (4,511) |
| 5-6 | 72.4% (3,966) | 74.2% (4,417) |
| 7-8 | 66.8% (6,708) | 69.9% (4,388) |
| 9-10 | 62.6% (3,026) | 62.4% (1,963) |
Dacia Logan by registration year
Registration-year pages cover every fuel of that year.
- 2014 Dacia Logan · 63.4%
- 2015 Dacia Logan · 64.6%
- 2016 Dacia Logan · 72.3%
- 2017 Dacia Logan · 72.5%
- 2018 Dacia Logan · 74.0%
- 2019 Dacia Logan · 76.1%
What this does and doesn't tell you
Fuel is DVSA's recorded fuel type; plug-in and self-charging hybrids are grouped as hybrid. A difference between fuels can come from the engines themselves, or from how the cars are used — diesels typically cover more miles, and the adjusted ratio allows for mileage band but not for every difference in use. For one car, its own MOT history is the better guide: see MOT check.
Check a specific diesel Dacia Logan
Enter a UK registration to see that car's own MOT history and what it is likely to cost to own. Your first check is free and shows the vehicle summary and its headline ownership cost. The category-by-category breakdown is part of a paid check.
UK number plate or 17-character VIN
About this data. These are MOT test results, not a measure of mechanical reliability: a car's MOT outcome reflects its condition on the day, which depends on how it has been maintained and driven as well as how it was built. Figures cover class 4 vehicles (cars and light vans), normal tests only (retests excluded), outcomes pass, fail and pass after rectification at the station; vehicles at least 2.5 years old at test. Tests from 2023-01-01 to 2024-12-30. “Compared with similar cars” means compared with the national rate for cars of the same age, mileage band and fuel. Contains public sector information licensed under the Open Government Licence v3.0. Makes and models are matched to 73 Auto's vehicle catalogue; tests that can't be matched are left out rather than guessed. See how the MOT figures are produced.