Alfa Romeo Giulietta MOT Failures
An analysis of 238,742 real DVSA MOT tests on the Alfa Romeo Giulietta — what fails, how often, and how that compares to every other car on UK roads. Generations covered: 940 (2010–2021).
Where the Alfa Romeo Giulietta fails its MOT
The single biggest MOT failure point on the Alfa Romeo Giulietta is light unit fault — this model is 27 times more likely to fail on this item than the average car on UK roads. That makes it a significant weak point for anyone buying or owning this model. Across 238,742 MOT tests, 0.96% of all Alfa Romeo Giulietta 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 emissions failure (6.4x the fleet average), body panel damage (32x the fleet average), reversing lamp inoperative (9.5x the fleet average), and stop lamp with a multiple light source up to 1/... (6.2x the fleet average). These ratios compare the Alfa Romeo Giulietta'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 6 categories: Lights & Electrics, Exhaust & Emissions, Bodywork, Suspension, Brakes and others. If you're inspecting a Alfa Romeo Giulietta 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 Alfa Romeo Giulietta'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 Alfa Romeo Giulietta specifically, the DVSA data shows the most common failures at this mileage are body panel damage (32x the average) and significant brake effort recorded with no brake... (8.5x). tyre has a lump, bulge or tear caused by separa... (7.1x) and tyre seriously damaged (6.8x) 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 Alfa Romeo Giulietta specifically, the DVSA data shows the most common failures at this mileage are body panel damage (22x the average) and light unit fault (21x). reversing lamp inoperative (6.4x) and anti-roll bar links worn (5.7x) 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 Alfa Romeo Giulietta specifically, the DVSA data shows the most common failures at this mileage are light unit fault (24x the average) and body panel damage (14x). reversing lamp inoperative (9.5x) and suspension ball joints worn (7.0x) also appear frequently.
The shift from body panel damage 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 Alfa Romeo Giulietta specialists and owners flag most frequently, drawn from manufacturer technical bulletins, workshop data, and verified owner reports.
TCT dual clutch failure (940) Major
The TCT (Twin Clutch Technology) is Alfa Romeo's dry dual-clutch automatic transmission. Affects 940; typical independent garage repair cost is £1,500–£2,500.
MultiAir unit failure (940) Major
The MultiAir system uses electro-hydraulic actuation to control intake valve timing and lift continuously. Affects 940; typical independent garage repair cost is £800–£1,200.
Timing chain issues (940) Major
The petrol engines use a timing chain with hydraulic tensioners to drive the camshafts. Affects 940; typical independent garage repair cost is £600–£1,000.
MultiAir actuator failure (940) Major
The MultiAir actuator is the external electronic control module that manages the electro-hydraulic MultiAir system. Affects 940; typical independent garage repair cost is £500–£800.
For the complete picture — including repair costs across independent, specialist, and dealer garages — see the full Alfa Romeo Giulietta common problems breakdown.
What to check before buying a Alfa Romeo Giulietta
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Alfa Romeo Giulietta:
Lights & Electrics — check for light unit fault, reversing lamp inoperative, stop lamp with a multiple light source up to 1/.... Exhaust & Emissions — check for emissions failure. Bodywork — check for body panel damage.
Beyond the MOT items, ask specifically about tct dual clutch failure and multiair unit failure. These won't show up on a standard MOT but can be expensive to fix — repairs start from £1,500. 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.
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Alfa Romeo Giulietta MOT FAQs
What are the most common MOT failures on a Alfa Romeo Giulietta?
Based on 238,742 DVSA MOT tests, the most common failure is light unit fault — at 27x the national fleet average. Other frequent failures include emissions failure and body panel damage.
Is the Alfa Romeo Giulietta reliable based on MOT data?
The Alfa Romeo Giulietta has 13 MOT failure categories above the fleet average. Specialists also flag tct dual clutch failure 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 Alfa Romeo Giulietta most commonly fails on light unit fault and body panel damage. Under 60,000 miles, the main issues are body panel damage and significant brake effort recorded with no brake....
How do I check a Alfa Romeo Giulietta'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.