At a glance
How 709 first tests went in 2025.
- Passed first time
- 60 in every 100
- Did not pass first time
- 40 in every 100287 failed first-attempt tests
- The typical car
- 24 yearsabout 87,252 miles
- First tests counted
- 709
What failed most often
- Petrol emissions (with catalyst)19 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 2001 Suzuki Jimny vehicles in 2025, not a prediction that any one car will have them. Faults are grouped by part of the car. They come from MOT defect codes, not manufacturer bulletins, recalls or a diagnosis of any one car.
Body and structure
Two faults. The strongest is the chassis condition (rear): 4.6 times as often as on similar cars.
Figures below are measured across the 283 of 287 failed first attempts (98.6%) 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.
Chassis condition (rear)
What it means
A main load-bearing structural member that is fractured, deformed, modified or inadequately repaired is Major when structural rigidity is significantly reduced, and Dangerous where steering or braking is likely to be adversely affected. Corrosion of the body, cab or chassis at a mounting point is Dangerous where overall security or stability is impaired.
Also noted as an advisory
Testers also noted it as an advisory, worn but not yet failing, on 23 first tests, 5.2 times as often as on similar cars.
Exhaust system
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. Advisories count notes recorded on failed first tests only.
Brakes
One fault: rigid brake pipes (rear), 2.8 times as often as on similar cars.
Rigid brake pipes (rear)
What it means
Chafing, corrosion or damage to a rigid brake pipe justifies rejection once its wall thickness is reduced by a set amount, although DVSA accepts this is not easy to determine. If a tester is not sure, the benefit of the doubt applies. A leaking pipe or connection is graded Dangerous on a hydraulic system and Major on an air system.
Data: UK MOT open data, 2025. Compared with cars of the same age and mileage.
Noise, emissions and leaks
One fault: petrol emissions (with catalyst), 2.4 times as often as on similar cars.
Petrol emissions (with catalyst)
What it means
Emissions levels over the manufacturer's specified limits are Major, as are levels over default limits, which apply when no exact match is found for the vehicle. Dense blue or clearly visible black smoke at idle, held for a set period, is Major, except for certain older vehicles and two stroke engines where smoke is unavoidable. An induction or exhaust leak that could affect emissions levels is Major too.
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.
Non-component advisories (rear)
Coil spring (front)
Rigid brake pipes
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
- 60in every 100
- Passed on the first test.
- Fixed at the station
- 5in every 100
- Failed, then fixed at the test station the same day.
- Failed
- 35in every 100
- Did not pass, and were not fixed at the test station.
First-attempt pass 59.5% of 709 first tests (2025): only cars that passed first time count. Official-style pass 65.0%: cars fixed at the test station also count as a pass. The 5 fixed and the 35 not fixed make the 40 in every 100 that did not pass first time.
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 |
|---|---|---|
| 2000 | 60 in every 100 | 558 |
| 2001 This car | 60 in every 100 | 709 |
| 2002 | 60 in every 100 | 1,092 |
| 2003 | 60 in every 100 | 1,448 |
| 2004 | 59 in every 100 | 1,707 |
| 2005 | 59 in every 100 | 1,424 |
| 2006 | 58 in every 100 | 1,308 |
| 2007 | 57 in every 100 | 1,370 |
| 2008 | 67 in every 100 | 1,036 |
| 2009 | 65 in every 100 | 769 |
| 2010 | 65 in every 100 | 617 |
| 2011 | 71 in every 100 | 699 |
| 2012 | 70 in every 100 | 854 |
| 2013 | 75 in every 100 | 891 |
| 2014 | 76 in every 100 | 844 |
| 2015 | 76 in every 100 | 949 |
| 2016 | 78 in every 100 | 1,008 |
| 2017 | 78 in every 100 | 912 |
| 2018 | 81 in every 100 | 489 |
| 2019 | 89 in every 100 | 1,175 |
| 2020 | 91 in every 100 | 879 |
| 2021 | 95 in every 100 | 399 |
| 2022 | 96 in every 100 | 428 |
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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