Toyota Corolla MOT Failures
An analysis of 344,330 real DVSA MOT tests on the Toyota Corolla — what fails, how often, and how that compares to every other car on UK roads. Generations covered: E120 (2000–2006), E150 (2006–2013), E210 (2018–2023).
Where the Toyota Corolla fails its MOT
The single biggest MOT failure point on the Toyota Corolla is emissions failure — this model is 455 times more likely to fail on this item than the average car on UK roads. That makes it an extreme outlier for anyone buying or owning this model. Across 344,330 MOT tests, 5.41% of all Toyota Corolla tests recorded this as a failure.
Exhaust and emissions failures often point to catalytic converter degradation, lambda sensor faults, or — in diesel models — DPF problems. These can be expensive to fix and will cause an immediate MOT failure.
Other notable weak points include fuel system leaking, or missing or ineffective ... (40x the fleet average), braking effort inadequate at a wheel (80x the fleet average), anti-roll bar links worn (60x the fleet average), and headlight fault (54x the fleet average). These ratios compare the Toyota Corolla'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: Exhaust & Emissions, Bodywork, Brakes, Suspension, Lights & Electrics. If you're inspecting a Toyota Corolla 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 Toyota Corolla'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 Toyota Corolla specifically, the DVSA data shows the most common failures at this mileage are emissions failure (455x the average) and braking effort inadequate at a wheel (80x). headlight fault (54x) and suspension ball joints worn (40x) 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 Toyota Corolla specifically, the DVSA data shows the most common failures at this mileage are emissions failure (56x the average) and steering rack wear (41x). rear registration plate lamp throwing direct wh... (35x) and fuel system leaking, or missing or ineffective ... (31x) 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 Toyota Corolla specifically, the DVSA data shows the most common failures at this mileage are light unit fault (151x the average) and fuel system leaking or a risk of fire (63x). anti-roll bar links worn (60x) and fuel system leaking, or missing or ineffective ... (36x) also appear frequently.
The shift from emissions failure 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 Toyota Corolla specialists and owners flag most frequently, drawn from manufacturer technical bulletins, workshop data, and verified owner reports.
Subframe corrosion (E120/E150) Dangerous
The rear subframe and suspension mounting points are prone to severe corrosion on E120 and E150 generation Corollas, particularly affecting the area within 30cm of spring and suspension component mountings. Affects E120, E150; typical independent garage repair cost is £800–£1,500.
DPF issues (E150) Major
The diesel particulate filter on E150 generation diesel engines suffers from blockage issues, particularly on vehicles used predominantly for short journeys. Affects E150; typical independent garage repair cost is £400–£800.
Suspension component corrosion (E120/E150) Major
Suspension components including control arms, anti-roll bar links, and mounting hardware suffer from accelerated corrosion on E120 and E150 generation Corollas. Affects E120, E150; typical independent garage repair cost is £300–£800.
Injector failure (E120) Major
The common-rail diesel injectors on the 1CD-FTV 2.0 D-4D engine in E120 generation Corollas are prone to failure, typically manifesting as rough running, white or black smoke, and poor fuel economy. Affects E120; typical independent garage repair cost is £300–£600.
For the complete picture — including repair costs across independent, specialist, and dealer garages — see the full Toyota Corolla common problems breakdown.
What to check before buying a Toyota Corolla
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Toyota Corolla:
Exhaust & Emissions — check for emissions failure. Bodywork — check for fuel system leaking, or missing or ineffective ..., transmission shaft bent or badly damaged. Brakes — check for braking effort inadequate at a wheel. Suspension — check for anti-roll bar links worn, suspension ball joints worn, abs fault.
Beyond the MOT items, ask specifically about subframe corrosion and dpf issues. These won't show up on a standard MOT but can be expensive to fix — repairs start from £800. 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 Toyota Corolla?
Enter the reg to see its full MOT history, mileage records, write-off status, and finance checks.
Toyota Corolla MOT FAQs
What are the most common MOT failures on a Toyota Corolla?
Based on 344,330 DVSA MOT tests, the most common failure is emissions failure — at 455x the national fleet average. Other frequent failures include fuel system leaking, or missing or ineffective ... and braking effort inadequate at a wheel.
Is the Toyota Corolla reliable based on MOT data?
The Toyota Corolla has 24 MOT failure categories above the fleet average. Specialists also flag subframe corrosion 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 Toyota Corolla most commonly fails on light unit fault and fuel system leaking or a risk of fire. Under 60,000 miles, the main issues are emissions failure and braking effort inadequate at a wheel.
How do I check a Toyota Corolla'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.