At a Glance
The Fiat Uno has 48 identified common problems across 1 generation, with the Uno (1983-1995) being the most affected generation and brakes the most common problem category. Based on 47K MOT tests from DVSA data.
Problems are patterns in the DVSA data that occur significantly more often on a specific model than the UK average — confirmed at 99% statistical confidence. Read our DVSA MOT data methodology →
Below: generation-by-generation comparison of Fiat Uno common problems, MOT failure types, and pass-rate data drawn from DVSA records. Click any generation to see fuel- and engine-specific fault patterns, mileage-banded repair guidance, and the most common MOT failures testers record.
MOT Tests & Failures by Generation
Fiat Uno generations by MOT tests, failures, and identified problems from DVSA data
Hover over each bar for a full breakdown. Tap any bar to view that generation's problems.
Showing total MOT tests, failures, and known problems per make. Hover over each bar for a full breakdown.
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Browse Fiat Uno Generations
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Most Common Fiat Uno MOT Failures
Every reason Fiat Uno vehicles fail their MOT, ranked by frequency. Select an individual year to see only that year’s failures, or stay on ‘All time’ for the combined picture across our 20 years of DVSA data. Scroll inside the table for the full list.
| # | Failure | % of failures |
|---|---|---|
| 1 | Tyre tread depth below limit | 15.39% |
| 2 | Brake performance below minimum | 7.92% |
| 3 | Suspension mounting corroded | 7.01% |
| 4 | Front lamp not working | 5.04% |
| 5 | Exhaust system fault | 4.94% |
| 6 | Brake hydraulic component worn | 3.19% |
| 7 | Headlamp aim defect | 3.14% |
| 8 | Stop lamp not working | 3.08% |
| 9 | Wiper blades deteriorated | 3.06% |
| 10 | Body corrosion or damage | 2.90% |
| 11 | Windscreen washer not working | 2.73% |
| 12 | Rear lamp not working | 2.69% |
| 13 | Suspension joint or bush worn | 2.56% |
| 14 | Number plate lamp not working | 2.47% |
| 15 | Shock absorber worn or leaking | 2.44% |
| 16 | Driveshaft fault | 2.26% |
| 17 | Tyre condition | 2.10% |
| 18 | Indicator fault | 1.82% |
| 19 | Catalytic converter efficiency low | 1.70% |
| 20 | Chassis condition | 1.60% |
| 21 | Subframe mounting corroded | 1.37% |
| 22 | Fog lamp not working | 1.35% |
| 23 | Brake disc or drum worn | 1.30% |
| 24 | Front suspension joint worn | 1.27% |
| 25 | Track rod end worn | 1.22% |
| 26 | Brake pads or linings worn | 1.13% |
| 27 | Horn not working | 1.11% |
| 28 | Parking brake condition | 0.96% |
| 29 | Rear suspension fault | 0.80% |
| 30 | Windscreen damage affecting view | 0.80% |
| 31 | Steering rack fault | 0.66% |
| 32 | Front suspension fault | 0.66% |
| 33 | Coil spring broken or corroded | 0.50% |
| 34 | Spring mounting corroded | 0.40% |
| 35 | Seat belt condition | 0.39% |
| 36 | Exhaust emissions above threshold (non-catalyst) | 0.39% |
| 37 | MacPherson strut worn | 0.39% |
| 38 | Subframe corrosion or damage | 0.39% |
| 39 | Mirror damaged or missing | 0.37% |
| 40 | CV joint worn | 0.33% |
| 41 | Position lamp not working | 0.33% |
| 42 | Brake pedal fault | 0.32% |
| 43 | Handbrake cable fault | 0.29% |
| 44 | Suspension arm worn or corroded | 0.27% |
| 45 | Fuel cap damaged or missing | 0.23% |
| 46 | Brake pedal movement restricted | 0.23% |
| 47 | Parking brake performance below minimum | 0.23% |
| 48 | Steering operation fault | 0.22% |
| 49 | Spark ignition emissions above threshold | 0.21% |
| 50 | Brake caliper fault | 0.21% |
| 51 | Tyre size or type not matched | 0.18% |
| 52 | Steering column fault | 0.17% |
| 53 | Fuel hose damaged or leaking | 0.16% |
| 54 | Brake clevis joint worn | 0.15% |
| 55 | Brake fluid leak | 0.15% |
| 56 | Electrical switch fault | 0.15% |
| 57 | Dashboard warning lamp fault | 0.14% |
| 58 | Brake air or vacuum system fault | 0.14% |
| 59 | Battery loose or leaking | 0.13% |
| 60 | Body security fault | 0.12% |
| 61 | Suspension linkage fault | 0.12% |
| 62 | Brake lever fault | 0.12% |
| 63 | Brake relay lever fault | 0.10% |
| 64 | Fuel pipe corroded or damaged | 0.10% |
| 65 | Suspension unit fault | 0.10% |
| 66 | Brake wheel cylinder fault | 0.09% |
| 67 | Handbrake mechanism or mounting fault | 0.09% |
| 68 | Steering free play excessive | 0.09% |
| 69 | Steering lock fault | 0.08% |
| 70 | Rear reflector damaged or missing | 0.08% |
| 71 | Ball joint dust cover split | 0.07% |
| 72 | Tyre valve stem damaged | 0.07% |
| 73 | Bonnet catch or hinge fault | 0.06% |
| 74 | Flexible brake hose damaged | 0.05% |
| 75 | Brake back plate corroded or damaged | 0.05% |
| 76 | Vehicle structure corrosion | 0.05% |
| 77 | Brake linkage mounting fault | 0.05% |
| 78 | Headlamp fault | 0.05% |
| 79 | Bonded suspension condition | 0.05% |
| 80 | Rigid brake pipe corroded or damaged | 0.05% |
| 81 | Fuel tank corroded or leaking | 0.04% |
| 82 | Rear fog lamp not working | 0.04% |
| 83 | Load sensing valve fault | 0.03% |
| 84 | Steering arm worn | 0.03% |
| 85 | Steering wheel damaged or insecure | 0.03% |
| 86 | Suspension retaining or locking device fault | 0.02% |
| 87 | Wheel bearing worn | 0.02% |
| 88 | Electrical wiring fault | 0.02% |
| 89 | Brake master cylinder or servo mounting fault | 0.02% |
| 90 | Driver seat fault | 0.02% |
| 91 | Engine mounting worn or broken | 0.02% |
| 92 | Engine oil leak | 0.02% |
| 93 | Vehicle floor corroded | 0.02% |
| 94 | Brake fluid warning light on | 0.02% |
| 95 | Tailgate damaged or insecure | 0.02% |
| 96 | Brake pressure or vacuum buildup insufficient | 0.01% |
| 97 | Handbrake lever fault | 0.01% |
| 98 | Semaphore indicator fault | 0.01% |
| 99 | Suspension coupling worn | 0.01% |
| 100 | Trailing arm worn or corroded | 0.01% |
| 101 | Anti-roll bar worn or corroded | 0.01% |
| 102 | Boot lid damaged or insecure | 0.01% |
| 103 | Steering shaft fault | 0.01% |
| 104 | Axle beam corroded or cracked | <0.01% |
| 105 | Brake cable, rod, lever or linkage fault | <0.01% |
| 106 | Bumper damaged or insecure | <0.01% |
| 107 | Compression ignition emissions above threshold | <0.01% |
| 108 | Steering coupling worn | <0.01% |
| 109 | ABS fault | <0.01% |
| 110 | Brake slack adjuster fault | <0.01% |
| 111 | Brake stationary pin worn | <0.01% |
| 112 | Drag link end worn | <0.01% |
| 113 | Indicator warning light fault | <0.01% |
| 114 | Outline marker lamp not working | <0.01% |
| 115 | Rear fog lamp warning light fault | <0.01% |
| 116 | Speedometer fault | <0.01% |
| 117 | Steering damper fault | <0.01% |
| 118 | Towbar fault | <0.01% |
| 119 | Axle corroded or damaged | <0.01% |
| 120 | Brake fluid level low or contaminated | <0.01% |
| 121 | Brake master cylinder fault | <0.01% |
| 122 | Brake pedal linkage fault | <0.01% |
| 123 | Brake servo fault | <0.01% |
| 124 | Dip switch fault | <0.01% |
| 125 | Electronic stability control fault | <0.01% |
| 126 | Front passenger door fault | <0.01% |
| 127 | Hand-operated brake valve condition | <0.01% |
| 128 | Hazard warning light fault | <0.01% |
| 129 | Hydraulic brake cylinder fault | <0.01% |
| 130 | Hydraulic suspension accumulator fault | <0.01% |
| 131 | Propshaft fault | <0.01% |
| 132 | Steering intermediate drop arm worn | <0.01% |
| 133 | Torsion bar worn or corroded | <0.01% |
| 134 | King pin or swivel pin worn | <0.01% |
Showing all 134 reasons — scroll inside the table for the full list.
Fiat Uno MOT Failures by Category
Total MOT failure occurrences for the Fiat Uno, grouped by category. Same data as the failures table above — just sliced by category instead of fault title. Hover a slice for the top failures in each category.
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Frequently Asked Questions
What are the most common Fiat Uno problems?
Based on analysis of 47K Fiat Uno MOT tests from DVSA data, we have 48 identified common problems across 1 generation. The most frequently flagged issue is "Brake hydraulic component worn". Brakes is the most common problem category.
Which Fiat Uno generation has the most problems?
The Fiat Uno Uno (1983-1995) (1983–1995) has the highest number of identified common problems (60). Click the generation card above for the full breakdown.
How is this data calculated?
We analyse anonymised DVSA MOT test records under the Open Government Licence. An issue is classified as a "Common Problem" when it occurs significantly more often on a specific model than the UK average, confirmed at 99% statistical confidence. Read the full methodology page for details.
Can I report a problem with my Fiat Uno?
Yes — use the "Tell Us About Your Problem" form on this page. Your report helps other Fiat Uno owners spot problems early. All submissions are reviewed before being added to the public database.
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