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Vehicle history check Guides Model by model: what fails

Model by model: what fails

Fiat 500 common problems: worn suspension, low miles and the MOT record

Updated · 9 min read · By UK Car History

The short answer

Fiat 500 common problems are, above all, a suspension story. Worn bushes and ball joints, and shock absorbers that are tired or leaking, dominate its MOT failures: in October 2025 the suspension accounted for 32.3% of the failure items recorded on 500s, where the national share was 21.4%. Overall, 34.0% of 500 tests ended in a first-time fail, compared with 28.6% for every car and light van.

Fiat 500 common problems: suspension faults make up almost a third of its MOT failure items, despite its low mileage

We analysed DVSA's anonymised results for all 33,289 MOT tests on Fiat 500s that month. This guide follows the fail rate through the age bands, turns each frequent failure and advisory into plain English, sets the 500's low mileage against its suspension wear, and ends with what to check when buying a used Fiat 500.

Is the Fiat 500 worse than average at the MOT?

Overall, yes: 34.0% of the 500's tests in October 2025 were first-time fails, while the rate across all 3,205,764 car and light van tests that month was 28.6%. But the overall figure hides a turning point, and the age bands show where it falls.

Young 500s beat the average: the three-to-five-year-olds managed a fail rate of 11.2%, under the 12.8% recorded for all cars that age. From six years on the 500 falls behind, and stays behind:

Age bandFiat 500 failing first timeAll cars and light vans
3 to 5 years11.2%12.8%
6 to 8 years22.2%18.1%
9 to 11 years32.8%26.6%
12 to 14 years37.8%34.9%
15 years and over44.1%41.2%

Two bands held most of the cars: 9,885 tests on 500s aged nine to 11, and 10,371 on those aged 12 to 14.

Method in brief: the figures are our own count of DVSA's anonymised MOT results for October 2025, which DVSA makes available under the Open Government Licence. Retests are excluded, and a first-time fail covers both an outright fail and a pass that needed repairs at the test centre. Our guide to the most common MOT failures gives the full method and compares the 14 models tested most often.

Fiat 500 MOT failures by age: bars for the 500 and for all cars in five bands, the 500 lower only at 3 to 5 years
Below the national rate when young, above it from six years old. DVSA anonymised MOT test data, October 2025 (33,289 Fiat 500 tests), Open Government Licence.

Why does the suspension dominate a 500's failure list?

A single failed MOT can record several failure items, and items fixed at the test centre during the test still count. Put each item into its area of the car and the pattern is hard to miss:

Area of the carFiat 500All cars and light vans
Suspension32.3%21.4%
Lights, reflectors and electrics21.7%24.9%
Brakes14.1%14.8%
Tyres11.5%12.6%
Visibility6.4%7.3%
Body, chassis and structure5.6%6.4%
Noise, emissions and leaks5.6%5.9%
Steering1.1%3.7%

Nearly a third of the 500's failure items concern the suspension, where for cars in general it is about a fifth. Every other big area, from lights to tyres, came in a little under the national share, and steering barely registered: 1.1%, against 3.7%.

Fiat 500 MOT failures: what are the commonest items?

The eight items below failed 500s most often. The first column shortens DVSA's wording, and the last explains it with the help of the MOT inspection manual:

Failure itemShare of 500 failure itemsIn plain English
Suspension pin, bush or joint excessively worn9.4%The rubber bushes and pivot pins the suspension arms and anti-roll bars swivel on are worn out. A rubber bush fails only when the rubber or its bonding has visibly deteriorated badly.
Headlamp aim outside the limits6.3%The beam is pointing in the wrong place: up, down or sideways. Repairs are not allowed during a test, but small corrections to the aim are.
Shock absorber bush excessively worn5.4%A damper's rubber end mounting has worn beyond the limit.
Shock absorber not working, or leaking severely4.7%The damper no longer controls the spring, or is losing its fluid. A light film from slight seepage is not a fail.
Tyre tread too shallow3.8%Main grooves below 1.6mm deep within the middle three-quarters of the tread width. Graded dangerous.
Suspension ball joint excessively worn3.8%Excess play in a ball joint, one of the pivots that let the suspension move.
Tyre seriously damaged3.6%Major if a cut goes down to the cords. A lump, bulge or tear means the structure is giving way, which is dangerous.
Washers not working or short of fluid3.5%Dry or feeble washers that cannot clear the glass are a major defect.

Four of the top six are suspension faults, two of them on the shock absorbers, and only headlamp aim breaks the run. After those eight come four more:

  • Tyre cords on show or damaged: 3.1%, graded dangerous
  • A headlamp missing or dead: 3.0%
  • Handbrake too weak on the roller test: 2.9%
  • Exhaust leaking badly, or insecure: 2.9%

Which advisories should worry a Fiat 500 buyer?

An advisory marks a part that passed but is wearing, damaged or corroding, and DVSA pairs each standard advisory with the defect it can turn into. These eight were given to 500s most often:

AdvisoryShare of 500 advisoriesWhat the manual fails
Tyre near the tread limit, or edge-worn15.8%Tread under the legal minimum (dangerous)
Coil spring corroded9.5%A spring fractured or seriously weakened (major)
Tyre slightly damaged, cracking or perishing9.3%A tear from structural failure (dangerous)
Pin or bush worn, no excessive movement8.0%Worn beyond limits: the 500's number one fail (major)
Discs worn, pitted or scored6.8%A disc significantly and obviously worn (major)
Oil misting on a damper5.5%Severe leakage (major)
Minor leak of exhaust gases4.9%A major exhaust leak (major)
Shock absorber bush slightly worn3.8%An excessively worn bush (major)

The next four were an engine oil leak, not excessive (3.5%); sub-frame rust, not serious (3.5%); brake pads wearing thin (2.9%); and greasy or rusty brake pipes (1.8%).

Springs show an odd split. Rust on a coil spring was the second most frequent advisory on 500s, while springs that had actually broken or weakened stayed off the 12 most common failure items. So a corrosion note is a prompt to look under the car and ask what, if anything, has been done since.

For how advisories relate to minor, major and dangerous defects, see MOT advisories explained.

Does low mileage protect a Fiat 500 from MOT failure?

Not on this evidence. The 500 is a low-mileage car, and its average reading sat well below the national figure in each age band:

Age bandFiat 500, average milesAll cars and light vans
3 to 5 years22,13338,187
6 to 8 years36,64455,582
9 to 11 years53,01476,786
12 to 14 years66,68993,592
15 years and over80,824108,155

Even so, it is the 500 that fails more often from six years old. Rubber bushes, springs and dampers age and corrode as well as wearing with use, so a modest odometer reading says little about the state of the suspension.

Nearly every 500 tested was a petrol car (98.9%), with 1.1% diesel and 0.1% hybrid. First registrations ran from 1963 to 2025, most often 2014, 2015 and 2013, and cars recorded as a 500C are included.

However few miles the odometer shows, inspect the suspension of a 500 you are thinking of buying.

Buying a used Fiat 500: what should you check?

Start with its record. Typing the registration into our free car check look-up brings up its full MOT history: results, failures, advisories and mileage, test by test. In the two or three most recent tests, look for notes about coil springs, dampers, and pins or bushes. A seller who says those parts were replaced should be able to show a bill.

Then spend the viewing on the parts the figures single out:

CheckWhat to do
Shock absorbersPress each corner down firmly and let go. Continued bouncing means worn dampers, the Highway Code says
LeaksTorch behind each wheel at the dampers: a heavy leak fails, a light film does not
KnocksRadio off, then take some speed bumps slowly: a knock can mean wear in a bush, a ball joint or a damper mount
TyresAll four, full width and inner edges, for low tread, cuts, bulges, cracking and cords
HandbrakePark on a slope; it should hold the car firmly
Lights and washersEvery lamp on in turn, including brake lights, then the washers

Uneven tyre wear has a cause: the Highway Code links it to brake or suspension faults and to wheels out of alignment. For the drive itself, the test drive checklist covers what to listen and feel for.

The rest of the viewing, from the logbook and VIN to the bodywork, is in our used car checklist.

How do you find out whether a Fiat 500 has an open recall?

A recall is a manufacturer's fix for a serious safety problem, and GOV.UK says owners do not usually pay for the repair or the parts. A recent MOT pass tells you nothing either way, so check the actual car by its registration.

Our free look-up gives DVSA's recall status for the registration in one of four words (outstanding, all fixed, none found, not available). You can also put the registration into the recall checker on GOV.UK. An open recall is the seller's to sort out, so ask for it to be done before money changes hands.

Should the MOT figures put you off a used Fiat 500?

The data favours young cars. At three to five years old the 500 failed first time less often than average, 11.2% against 12.8%; after that it trailed cars of its own age, and the gap was largest in the nine-to-eleven band.

Most of the difference is ordinary wear in suspension, dampers and tyres, exactly the things an MOT history, a torch underneath and a test drive will show you before you pay. As for the engine, clutch and gearbox, they fall outside the MOT altogether, GOV.UK says, so judge them from the service record and an independent mechanic's report.

Finance still owed and insurance write-offs are invisible in MOT records too. Our finance check looks for any agreement still recorded against it, as part of the Premium report (£7.99) with the write-off and stolen checks.

Between two 500s, prefer the one whose recent tests are free of suspension notes over the one with the same worn bushes advised three years running. The model average cannot tell you that; the car's own history can.

Questions and answers

Which Fiat 500 versions do these figures cover?

The 500 and the 500C as they appear in the MOT data, which also takes in cars listed as a 500 Dolcevita MHEV. The 500X and 500L are different models and are left out.

Can MOT data tell me about a 500's engine or gearbox?

No. The engine, clutch and gearbox are outside the MOT, GOV.UK says, so the test data is silent on them. Use the service record and a mechanic's inspection instead.

Will a low-mileage Fiat 500 sail through its MOT?

No. The 500s in the data had covered fewer miles than average in every age band, and still failed more often than average from six years old, mostly on suspension items.

Is rust on a coil spring an MOT fail?

Not on its own: surface corrosion is noted as an advisory. A spring that is fractured or seriously weakened is a major defect in the inspection manual, and that does fail the test.

Why might a Fiat 500 fail on its handbrake?

Because it did not hold hard enough when its efficiency was measured: falling short of the minimum is a major defect. Parking brake efficiency made up 2.9% of 500 failure items.

How many years of MOT results can I see for a 500?

For tests in England, Scotland and Wales, GOV.UK holds results back to 2005, or to 2017 for tests in Northern Ireland, with the failures, advisories and mileage of each. Our free look-up shows the same history from the registration.

Sources

This guide is general information for people buying or owning a car in the UK, not legal or financial advice. UK Car History is an independent service, not affiliated with the DVLA, the DVSA or GOV.UK.