Fiat X1/9 MOT Failures
An analysis of 2,464 real DVSA MOT tests on the Fiat X1/9 — what fails, how often, and how that compares to every other car on UK roads.
Where the Fiat X1/9 fails its MOT
The single biggest MOT failure point on the Fiat X1/9 is wheel bearings worn — this model is 59 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 2,464 MOT tests, 13.18% of all Fiat X1/9 tests recorded this as a failure.
Suspension failures typically mean worn bushes, drop links, or dampers. These affect handling and tyre wear. Budget £150–£400 per corner at an independent garage for full suspension overhaul.
Other notable weak points include parking brake efficiency below minimum requirement (13x the fleet average), emissions failure (477x the fleet average), tyre valve seriously damaged or misaligned (79x the fleet average), and structural corrosion (50x the fleet average). These ratios compare the Fiat X1/9'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: Suspension, Brakes, Exhaust & Emissions, Tyres, Bodywork and others. If you're inspecting a Fiat X1/9 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 Fiat X1/9'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 Fiat X1/9 specifically, the DVSA data shows the most common failures at this mileage are wheel bearings worn (59x the average) and structural corrosion (50x). fluid leak (18x) and abs fault (14x) 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 Fiat X1/9 specifically, the DVSA data shows the most common failures at this mileage are emissions failure (477x the average) and tyre valve seriously damaged or misaligned (79x). headlight fault (39x) and brake hoses perished or damaged (17x) also appear frequently.
The shift from wheel bearings worn at lower mileages to emissions failure 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.
What to check before buying a Fiat X1/9
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Fiat X1/9:
Suspension — check for wheel bearings worn. Brakes — check for parking brake efficiency below minimum requirement, brake hoses perished or damaged. Exhaust & Emissions — check for emissions failure, fluid leak. Tyres — check for tyre valve seriously damaged or misaligned.
Always check the car's full MOT history for patterns — recurring advisories often become failures within 12 months. Enter any reg into our free car check to see the complete picture.
Looking at a specific Fiat X1/9?
Enter the reg to see its full MOT history, mileage records, write-off status, and finance checks.
Fiat X1/9 MOT FAQs
What are the most common MOT failures on a Fiat X1/9?
Based on 2,464 DVSA MOT tests, the most common failure is wheel bearings worn — at 59x the national fleet average. Other frequent failures include parking brake efficiency below minimum requirement and emissions failure.
Is the Fiat X1/9 reliable based on MOT data?
The Fiat X1/9 has 10 categories where it fails more often than average. The main concern is wheel bearings worn. Always check a specific car's full history before buying.
What MOT failures should I expect at high mileage?
The most common high-mileage failures include wheel bearings worn, parking brake efficiency below minimum requirement, emissions failure.
How do I check a Fiat X1/9'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.