Renault Laguna MOT Failures
An analysis of 87,644 real DVSA MOT tests on the Renault Laguna — what fails, how often, and how that compares to every other car on UK roads. Generations covered: Mk1 (1994–2001), Mk2 (2001–2007), Mk3 (2007–2015).
Where the Renault Laguna fails its MOT
The single biggest MOT failure point on the Renault Laguna is indicator or hazard warning switch inoperative — this model is 91 times more likely to fail on this item than the average car on UK roads. That makes it a major concern for anyone buying or owning this model. Across 87,644 MOT tests, 3.29% of all Renault Laguna tests recorded this as a failure.
Lighting faults are usually straightforward to fix (bulbs, connectors, earth points) but can indicate deeper wiring issues on older cars. Check all lights including fog lamps, number plate lights, and dashboard warning lights.
Other notable weak points include parking brake inefficient (1473x the fleet average), subframe bushes or mounts worn (104x the fleet average), emissions failure (41x the fleet average), and steering lock missing or not functioning (125x the fleet average). These ratios compare the Renault Laguna's failure rate on each item against the national average for all cars tested — a ratio of 10x means this model fails ten times more often than a typical car.
The failures span 5 categories: Lights & Electrics, Brakes, Suspension, Exhaust & Emissions, Steering. If you're inspecting a Renault Laguna before purchase, these are the areas to focus on — and if any have been flagged as advisories on a previous MOT, they're likely to become failures in the near future.
How failures change with mileage
The Renault Laguna's weak points shift as the car covers more miles. Understanding these patterns helps you know what to expect — and what to budget for — at each stage of ownership.
Under 60,000 miles
At this mileage, most failures are either design-related or caused by age rather than wear. Components like bushes and drop links may not have been replaced yet, and original-fit parts can deteriorate even on low-mileage cars that spend a lot of time sitting.
For the Renault Laguna specifically, the DVSA data shows the most common failures at this mileage are parking brake inefficient (1473x the average) and subframe bushes or mounts worn (104x). indicator or hazard warning switch inoperative (91x) and headlight fault (48x) also appear frequently.
60,000 to 100,000 miles
This is where routine wear items start to show up. Brake components, tyres, and exhaust parts have done serious work by this point. Cars that have been well serviced will show fewer of these failures — this mileage band is where good maintenance really separates the well-kept from the neglected.
For the Renault Laguna specifically, the DVSA data shows the most common failures at this mileage are steering lock missing or not functioning (125x the average) and parking brake inefficient (84x). emissions failure (41x) and indicator or hazard warning switch inoperative (39x) also appear frequently.
Over 100,000 miles
High-mileage cars accumulate failures across multiple systems. The key question isn't whether things will need doing — they will — but whether the car has been maintained well enough to keep on top of them. Look for a consistent service history and recent MOT passes with minimal advisories.
For the Renault Laguna specifically, the DVSA data shows the most common failures at this mileage are light unit fault (51x the average) and suspension component damaged or corroded (46x). parking brake inefficient (42x) and indicator or hazard warning switch inoperative (41x) also appear frequently.
The shift from parking brake inefficient at lower mileages to light unit fault at higher mileages is typical — early failures tend to be design or factory-related, while high-mileage failures reflect accumulated mechanical wear. A car that's been well maintained will usually dodge the worst of both.
Known issues beyond the MOT
An MOT only tests roadworthiness at a single point in time — it won't catch developing faults, intermittent problems, or issues that haven't yet reached the failure threshold. These are the issues that Renault Laguna specialists and owners flag most frequently, drawn from manufacturer technical bulletins, workshop data, and verified owner reports.
Front suspension ball joint wear Major
The front suspension lower ball joints on all Laguna generations fail at exceptionally high rates. Affects Mk1, Mk2, Mk3; typical independent garage repair cost is £200–£350.
Front suspension pin and bush wear Major
Front suspension mounting bushes and pivot pins fail at extraordinary rates on all Laguna variants. Affects Mk1, Mk2, Mk3; typical independent garage repair cost is £150–£300.
Front coil spring failure Major
Front coil springs fracture at 23.2 times the national average, with particularly severe problems on 2.0-litre diesel variants. Affects Mk1, Mk2, Mk3; typical independent garage repair cost is £150–£250.
Emissions failure (1.8 petrol) Major
The 1.8-litre petrol engine fails emissions tests at This specific engine variant struggles to meet MOT emissions limits for CO and HC (hydrocarbons), typically due to catalytic converter degradation, lambda sensor failures, or carbon build-up on intake valves. Affects Mk1, Mk2; typical independent garage repair cost is £300–£800.
For the complete picture — including repair costs across independent, specialist, and dealer garages — see the full Renault Laguna common problems breakdown.
What to check before buying a Renault Laguna
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Renault Laguna:
Lights & Electrics — check for indicator or hazard warning switch inoperative, light unit fault, indicator or hazard warning switch does not ope.... Brakes — check for parking brake inefficient. Suspension — check for subframe bushes or mounts worn, suspension component damaged or corroded. Exhaust & Emissions — check for emissions failure.
Beyond the MOT items, ask specifically about front suspension ball joint wear and front suspension pin and bush wear. These won't show up on a standard MOT but can be expensive to fix — repairs start from £200. A specialist pre-purchase inspection is worth the investment on this model.
Always check the car's full MOT history for patterns — recurring advisories often become failures within 12 months. And verify the service history to confirm maintenance has been kept up to schedule. Enter any reg into our free car check to see the complete picture.
Looking at a specific Renault Laguna?
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Renault Laguna MOT FAQs
What are the most common MOT failures on a Renault Laguna?
Based on 87,644 DVSA MOT tests, the most common failure is indicator or hazard warning switch inoperative — at 91x the national fleet average. Other frequent failures include parking brake inefficient and subframe bushes or mounts worn.
Is the Renault Laguna reliable based on MOT data?
The Renault Laguna has 22 MOT failure categories above the fleet average. Specialists also flag front suspension ball joint wear as a concern. A pre-purchase inspection and service history check are recommended.
What MOT failures should I expect at high mileage?
Above 100,000 miles, the Renault Laguna most commonly fails on light unit fault and suspension component damaged or corroded. Under 60,000 miles, the main issues are parking brake inefficient and subframe bushes or mounts worn.
How do I check a Renault Laguna's MOT history?
Enter the registration number into our free car check above. You'll see every MOT test result, advisories and failures, mileage readings, write-off status, and finance checks.
MOT failure data sourced from DVSA bulk test records via data.gov.uk. Ratios compare this model's failure rate against the national fleet average. Known issues sourced from manufacturer bulletins, specialist workshops, and verified owner reports.