Fiat 500 — Common MOT Faults
Model-level fault breakdown for the Fiat 500 (2007–present): top failure categories, dangerous defect and retest rates, mileage benchmarks, and an AI-calculated reliability score.
Fiat 500 fault snapshot: first-time MOT pass rate 77.5% (failure rate 22.5%), ranks above the UK average of 64%. Dangerous defect rate 1.9%, retest rate 15%. Composite reliability score 72/100 (good). Top failure category: lamps, reflectors and electrical equipment at 17.5% of tests.
Fiat 500 · reliability score
72/100
MOT Checkup reliability score: Good · combines pass rate, dangerous defect rate and retest rate.
77.5%
vs UK 64%
1.9%
15%
Top MOT failure categories — Fiat 500
Categories most likely to trigger an MOT failure on the Fiat 500. The first three account for the majority of fails.
Lamps, reflectors and electrical equipment
Suspension
Brakes
Tyres
Exhaust, fuel and emissions
Where on the car faults cluster
Front
32%
Rear
28%
Offside
19%
Mileage benchmarks — Fiat 500
From ages 3 to 5, average mileage on a Fiat 500 rises from around 16,000 miles to 28,000 miles — about 6,000 miles a year, which is in line with the UK average use pattern. A specific car well below or above these averages warrants extra scrutiny — very low mileage on an older car can mean infrequent maintenance just as easily as low use.
Age 3
16,000 mi
Age 5
28,000 mi
Age 10
52,000 mi
Run a free MOT check on this Fiat 500
Enter the registration to see the actual MOT history for the car you’re looking at — pass/fail, advisories, dangerous defects, mileage at every test. Free and instant.
Free MOT history check at /free-mot-check.
Pre-purchase checklist for a Fiat 500
- Pull the MOT history first. A pattern of repeat advisories in the same category (e.g. suspension knock noted on three tests in a row) usually means a deferred repair waiting for you.
- Sanity-check the mileage. Compare what’s on the odometer with the readings logged at each MOT. Any backward step or implausibly large jump is a red flag.
- Inspect the top failure points yourself. For this model the cluster is lamps, reflectors and electrical equipment and suspension — both are easy to assess in a short test drive.
- Ask for the last service record. A Fiat with consistent dealer or independent service stamps will normally outperform the model-average pass rate of 77.5%.
Compare and explore
Fiat 500 MOT check
Free registration lookup for this model.
Fiat reliability
Brand-wide reliability profile and model ranking.
Fiat 500 repair costs
Indicative repair costs for the common faults above.
Land Rover Discovery Sport — common faults
Sibling page at a similar pass rate (77.5%).
Ford Focus — common faults
Sibling page at a similar pass rate (77.8%).
Volkswagen Touran — common faults
Sibling page at a similar pass rate (77.8%).
Fiat 500 — FAQ
Is the Fiat 500 reliable for MOT?
What are the most common MOT failures on a Fiat 500?
What's the dangerous defect rate on a Fiat 500?
How do I check a specific Fiat 500's MOT history?
Check the MOT history of a Fiat 500
Free, instant lookup. Every test result, advisory and mileage reading since 2005.
Source: MOT Checkup reliability dataset. Reliability score is a composite metric blending first-time pass rate, dangerous defect rate and retest rate — see /methodology for the formula. Individual cars vary considerably; the registration-level MOT history is the canonical record.