Regular maintenance prevents many problems. Most MOT failures with the Dacia Logan MCV are caused by checkable defects in the suspension, exhaust and electronics. This affordable estate car scores below average in inspections, especially on examples older than three years. With targeted attention you can avoid costly surprises. Discover which weak spots you can check and how to get your Logan ready for a successful test.
The most common reasons for failure
For the Dacia Logan MCV, a limited number of recurring defects account for the majority of all failures. Lighting stands head and shoulders above the rest: up to 40% of all rejected Logan MCVs fail due to faulty dipped beams, main beam, brake lights, indicators or number plate lights. After three years of use, the bulbs are most likely to give up. The manufacturer fits cheap filament bulbs, which fail quickly.
Tyres are the second bottleneck and account for more than 17% of failures. Owners rarely check their tyre tread, even though the legal minimum depth of 1.6 millimetres is quickly reached. Small dry cracks in the sidewall and incorrect pressure are common, especially on Logan MCVs that spend a lot of time parked up.
Brakes cause around 20% of the problems. Unequal braking force between the wheels, worn pads or discs and dragging brakes appear with intensive use. This is a safety‑critical area that testers pay close attention to.
The suspension and rust are responsible for 12% of failures. Play in ball joints and anti‑roll bar links is common, particularly on examples with more than 100,000 kilometres on the clock. Rust‑through on sills and wheel arches is a frequently reported problem on Logan MCVs that are regularly exposed to road salt.
‘ After three years, one in seven examples needs repair before passing the test, which is worse than comparable estate cars. ’
Model‑specific vulnerabilities of the Logan MCV
The Dacia Logan MCV performs strikingly poorly in German TÜV reports. After three years, one in seven examples needs repair before passing the test, which is worse than comparable estate cars. This score is mainly due to vulnerable lighting and suspension.
Dutch RDW data up to 2023 show average reliability. Emissions issues occur regularly on 2% of examples. Problems with tyre tread occur on 8% of cars. Older Logans suffer from oil leaks from the engine or gearbox, which are tolerated more leniently in the Netherlands than in Germany.
Owners report on forums that chassis rust accelerates due to exposure to road salt in winter. The control arms develop play at higher mileages, often leading to retests because repairs were incomplete the first time.
What maintenance prevents MOT problems
You can easily test the lights with a helper or by looking at the reflection on a wall. Check all the lights: dipped beam, main beam, brake lights, indicators and number plate lights. Replace faulty bulbs in advance, as a set costs only a few euros and saves you a retest. Adjust the dipped beam setting if the headlight aim is incorrect.
Check your tyres every week. Measure the tread in several places across the width, as uneven wear points to incorrect alignment. Rotate the tyres every 10,000 kilometres to promote even wear. Check the sidewalls for cracks caused by age or UV radiation.
Check brakes and suspension by listening for unusual noises. Watch out for tapping or squeaking while braking, and for clicking or thudding while steering. Feel whether the brake pedal responds normally and does not feel spongy. Pull on the wheels to detect play in the suspension. Many MOT garages offer free pre‑checks; this is useful if you are unsure.
You can detect leaks by parking the car on clean paper and checking after a few hours for any drops. Visually inspect the chassis and exhaust for rust patches or holes. On diesel versions, the particulate filter deserves extra attention, as blockages lead to emissions problems.
Most common causes by component
Lighting on the Logan MCV fails for several reasons. Cheap filament bulbs give up sooner than more expensive versions. Moisture in the headlight units attacks the contacts, especially on cars that are kept outside. Poor earth connections in the lighting circuit cause several bulbs to fail at once.
Tyre problems arise from neglected maintenance. Owners rarely check the tread, so the legal limit is reached unnoticed. Too low a pressure accelerates wear on the outer edges of the tread. Long periods of standing still lead to flat spots and dry cracks.
Brake defects on the Logan MCV are often related to uneven wear. Sticking callipers cause the car to pull under braking, which leads to immediate failure. Worn discs indicate overheating; you can recognise this by deep grooves or blue discolouration. Leaking wheel cylinders reduce braking power and leave traces on the inside of the wheels.
Suspension problems are concentrated around specific components: the control arm bushes and ball joints. These parts wear faster when driving on bumpy roads and poorly maintained streets. Leaking shock absorbers lose their damping effect, which is visible as oil streaks on the strut. Broken drop links on the anti‑roll bar cause knocking noises over bumps; these are the rods that prevent the car from rolling excessively.
‘ Leave complex repairs to the suspension and brakes to a specialist, because poorly executed work leads to dangerous situations. ’
Practical DIY tips for owners
Carry out your own checks regularly, preferably once a month. Walk around the car and check that all the lights work. Ask a helper to operate the various switches. Look under the car for fresh patches that indicate leaks. Test the windscreen wipers and washer system, as these are easy reasons to fail the test.
Keep a maintenance schedule for replacing wear‑and‑tear items such as tyres, brake pads and filters. Note when the tyres, pads and filters were replaced so you know when the next change is due. This prevents unpleasant surprises just before the MOT.
Book the test well before the expiry date. If the car fails, you have one month for a free retest, but only if the first test took place within the validity period. Give yourself at least six weeks to carry out any repairs without rushing.
If you are unsure about a failure point, ask for a second opinion. The RDW offers this option if you disagree with the tester. Leave complex repairs to the suspension and brakes to a specialist, because poorly executed work leads to dangerous situations.
Getting the Logan MCV through the test successfully
The chance of failing at the first attempt is higher for the Logan MCV than for many rivals. With targeted preparation you can get through the test without problems. Focus on the known weak spots: lighting, tyres, brakes and suspension. Together, these four categories account for more than 80% of all failures.
Regular minor maintenance keeps major problems at bay. Replace bulbs at the first sign of failure, check tyre tread and pressure every week, and have the brakes and suspension checked once a year. This simple routine saves retests and unexpected costs.
The Logan MCV remains an interesting choice thanks to its low maintenance costs and practical boot space, provided you keep an eye on the model‑specific issues. With the right precautions and timely repairs, your Logan will remain safe and reliable on the road.
On the Carnews website you will find much more information about maintenance, common problems and practical tips for the Dacia Logan MCV and other models. Discover useful guides and experiences from other owners to keep your car in top condition.
Frequently asked questions
The most common MOT failure points on the Dacia Logan MCV are faulty lighting, wear or defects on tyres, brakes, suspension/rust and leaks/exhaust. Lighting is the biggest issue and, at up to around 40% of failures, is clearly higher than the general average of roughly 25–40%. Tyres and brakes, at around 17% and 20% of failures respectively, are roughly in line with the overall average. Suspension/rust and leaks/exhaust, at around 12% each, are in the same range as general failure percentages.
When carrying out preventive maintenance on a Dacia Logan MCV, particular attention should be paid to the lighting (all bulbs and headlight alignment) and tyres (tread, pressure and dry cracks). In addition, the brakes (pads, discs and equal braking force) and suspension/control arms with ball joints and anti‑roll bar links are important focus areas. Also regularly check for rust on the chassis/sills and for leaks (oil, dampers, exhaust). By checking these components before the test, you can avoid many common MOT failures and expensive repairs afterwards.
On the Dacia Logan MCV, lighting and suspension components (such as ball joints and control arms) stand out particularly often as failure points compared with average. This is partly due to relatively vulnerable, cheap lighting and a chassis that develops play more quickly at higher mileages. In addition, rust on the chassis/sills and tyre wear are reported more frequently than average in test results and user reviews. This combination means that older Logan MCVs tend to fail the MOT slightly more often than many competitors.
A car enthusiast can personally check all the lighting (dipped beam, main beam, brake lights, indicators, fog lights and number plate lights) and replace worn or failed bulbs in good time. They can also inspect the tyres for sufficient tread (at least 1.6 mm), correct pressure and cracks or damage in the sidewall. Furthermore, they can visually check for leaks under the car (traces of oil or coolant) and look for rust patches on the chassis, sills and wheel arches. Finally, while driving gently they can listen for unusual noises when braking or driving over speed bumps (creaking, knocking), which may point to problems with the brakes or suspension.