At a glance
How 78,060 first tests went in 2025.
- Passed first time
- 55 in every 100
- Did not pass first time
- 45 in every 10035,217 failed first-attempt tests
- The typical car
- 15 yearsabout 93,626 miles
- First tests counted
- 78,060
What failed most often
- Suspension arm ball joint (front)20 in every 100 failed tests
- Individual sidelight or tail light (front)14 in every 100 failed tests
- Tyre condition (front)10 in every 100 failed tests
How we count this. Data: UK MOT open data, 2025. Only Class 4 cars on their first MOT of the year are counted. A car that fails and is fixed at the test station still counts as a fail in the first-attempt rate. These are raw results, not adjusted for age, mileage, or peer mix. The MOT does not test engine or gearbox internals.
These are patterns across 2010 Ford Fiesta vehicles in 2025, not a prediction that any one car will have them. Faults are grouped by part of the car. A wear pattern follows age and use more than the way the car was built. They come from MOT defect codes, not manufacturer bulletins, recalls or a diagnosis of any one car.
Suspension
Three faults. The strongest is the swivel pins and bushes (rear): 18 times as often as on similar cars.
Figures below are measured across the 35,176 of 35,217 failed first attempts (99.9%) that recorded an odometer reading in 2025. Mileage is needed to compare like with like.
We only list faults with at least 20 failures and a rate of about 2.0 times that of similar cars, which keeps one-off results out of the list.
Swivel pins and bushes (rear)
Also noted as an advisory
Testers also noted it as an advisory, worn but not yet failing, on 2,061 first tests, 8.9 times as often as on similar cars.
Suspension arm ball joint (front)
What it means
A suspension arm ball joint is failed under the general suspension pin, bush or joint wording. Excessively worn is Major, and likely to become detached is graded Dangerous.
Also noted as an advisory
Testers also noted it as an advisory, worn but not yet failing, on 1,956 first tests, 2.5 times as often as on similar cars.
Suspension mounting area (rear)
What it means
The load bearing structure within a set distance of a sub-frame, spring or suspension component mounting is a prescribed area. Major applies when its strength or continuity is significantly reduced or it is inadequately repaired. Dangerous applies when it is so weakened that control of the vehicle is likely to be adversely affected.
Data: UK MOT open data, 2025. Compared with cars of the same age and mileage. Advisories count notes recorded on failed first tests only.
Body and structure
One fault: exhaust system (rear), 3.0 times as often as on similar cars.
Exhaust system (rear)
What it means
Exhaust fumes causing a danger to health of persons on board are graded Dangerous, and so is a silencer likely to become detached. Fumes entering the cabin are Major. One or more missing or defective mountings does not necessarily make the exhaust insecure, since testers assess the overall security of the system.
Data: UK MOT open data, 2025. Compared with cars of the same age and mileage.
Tyres
One wear pattern: tyre size or type (front), 2.6 times as often as on similar cars.
Tyre size or type (front)
What it means
Tyres of different sizes or different aspect ratios on the same axle, or on twin wheels, are graded Major, as are tyres of different structure on the same axle, such as radial-ply and cross-ply. Steel and fabric radial-ply count as the same structure. The manual treats a standard car tyre and one of a single stated lower aspect ratio as almost identical in size, so that pair is allowed in any mix.
Data: UK MOT open data, 2025. Compared with cars of the same age and mileage.
Noise, emissions and leaks
One fault: petrol emissions not tested, 2.0 times as often as on similar cars.
Petrol emissions not tested
What it means
On a petrol car, an emissions test recorded as not tested or unable to be completed is failed as Major. DVSA's wording gives no reason why.
Data: UK MOT open data, 2025. Compared with cars of the same age and mileage.
Advisories
Other things testers noted as worn or close to failing, more often than on similar cars.
An advisory is a note from the tester about something that has not failed yet. It is an early warning, not a fail. Advisories for the faults above are shown with those faults.
Steering universal joint (front)
Suspension sub-frame pins and bushes (rear)
Wheel condition (rear)
Steering gear operation
Steering rack play (front)
Transmission belts
Steering column
Data: UK MOT open data, 2025. Counts cover advisories recorded on failed first tests only, compared with cars of the same age and mileage.
MOT pass rates
How first tests ended, and how the pass rates are counted.
- Passed first time
- 55in every 100
- Passed on the first test.
- Fixed at the station
- 9in every 100
- Failed, then fixed at the test station the same day.
- Failed
- 36in every 100
- Did not pass, and were not fixed at the test station.
First-attempt pass 54.9% of 78,060 first tests (2025): only cars that passed first time count. Official-style pass 63.6%: cars fixed at the test station also count as a pass. The 9 fixed and the 36 not fixed make the 45 in every 100 that did not pass first time.
Petrol and diesel
Figures are in every 100 first tests. Cars with more miles usually fail more often, so the same-mileage figure gives every fuel the mileage mix of all the cars in this year.
Same model, other years
Passed first time in every 100, all tested in 2025.
Newer cars are younger, so look for a jump rather than the climb.
| Year | Passed first time | First tests |
|---|---|---|
| 1997 | 53 in every 100 | 407 |
| 1998 | 52 in every 100 | 879 |
| 1999 | 56 in every 100 | 1,115 |
| 2000 | 54 in every 100 | 1,109 |
| 2001 | 55 in every 100 | 1,907 |
| 2002 | 56 in every 100 | 5,496 |
| 2003 | 55 in every 100 | 11,632 |
| 2004 | 53 in every 100 | 15,586 |
| 2005 | 53 in every 100 | 19,163 |
| 2006 | 52 in every 100 | 32,932 |
| 2007 | 53 in every 100 | 42,015 |
| 2008 | 52 in every 100 | 46,538 |
| 2009 | 53 in every 100 | 80,926 |
| 2010 This car | 55 in every 100 | 78,060 |
| 2011 | 57 in every 100 | 77,995 |
| 2012 | 58 in every 100 | 92,486 |
| 2013 | 60 in every 100 | 105,711 |
| 2014 | 62 in every 100 | 115,867 |
| 2015 | 65 in every 100 | 119,208 |
| 2016 | 67 in every 100 | 108,889 |
| 2017 | 74 in every 100 | 86,424 |
| 2018 | 83 in every 100 | 89,668 |
| 2019 | 85 in every 100 | 75,408 |
| 2020 | 86 in every 100 | 48,062 |
| 2021 | 89 in every 100 | 26,736 |
| 2022 | 91 in every 100 | 24,525 |
If you are buying one
What this year's MOT record means for the decision in front of you.
Mileage matters most on a 2010 Fiesta.
Of 2010 Fiesta vehicles with under 65,000 miles, 69 in every 100 passed their 2025 MOT first time. With 125,000 miles or more, 48 in every 100 did.
Petrol or diesel?
| Typical mileage | Passed first time, as tested | Passed first time, same mileage | |
|---|---|---|---|
| Petrol | 87,068 miles | 56 | 55 |
| Diesel | 118,354 miles | 51 | 54 |
Figures are in every 100 first tests. Petrol cars look better on the raw figures only because diesel cars have done more miles (typically 118,354 against 87,068). At the same mileage there is no clear difference between the two.
What to check at your mileage
How often each fault turned up on a failed first test, by the car's mileage. Read it as: what is likely to need looking at on a car like the one in front of you.
| Under 65,000 | 85,000–103,000 | 125,000 and over | |
|---|---|---|---|
| Suspension arm ball joint (front) | 4.3 | 10.0 | 11.0 |
| Individual sidelight or tail light (front) | 1.4 | 7.8 | 8.9 |
| Tyre condition (front) | 3.6 | 4.9 | 5.2 |
| Brake light | 3.1 | 4.6 | 4.6 |
| Coil spring (front) | 2.8 | 3.7 | 4.3 |
Faults per 100 first tests, by the car's mileage at the test.
When a car fails
of failed cars had one item to fix.
of failed cars had three or more items to fix.
of all first tests had a defect the tester marked dangerous (unsafe to drive away).
Every figure here is a first-attempt MOT rate from DVSA open data for this model line, for cars of this model year tested in 2025. Each mileage band holds a fifth of the tests. MOTs do not test engine or gearbox internals, so this is a pre-purchase checklist, not a full reliability score.
FAQs
Short answers about how to read this model-year guide.
About this data
How this page is built and what it can (and can't) say.
These figures come from UK MOT open data for this model year. We surface common failure patterns against similar cars, not a full reliability score, and not a pass/fail verdict on any individual vehicle.
What we include
UK Class 4 cars only. Normal MOT tests (not retests); first test per vehicle per calendar year; results pass, PRS, or fail.
Same-day repairs
PRS means the car failed items that were fixed at the test station and then passed the same day. We count PRS as a first-attempt fail in headline rates so same-day repairs do not hide problems.
How we compare
We compare this model year with other Class 4 cars of similar age and mileage in the same test year. This model family is left out of the peer group so the car is not measured against itself.
What this does not cover
- MOTs do not cover engine internals, gearboxes, or many electronics; this is not a full reliability score.
- Common faults come from MOT defect stats, not manufacturer TSBs or recalls.
- Age and mileage matching reduces, but does not remove, differences in how cars were used and maintained.
- If the data for a car is too thin to say anything useful, we say so rather than guess.
Contains public sector information licensed under the Open Government Licence v3.0.
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