Model Reports 4 min read Updated 18 Oct 2026

Suzuki Jimny 2003: reliability & common MOT faults

In 2025, 60 in every 100 first MOTs on a 2003 Suzuki Jimny were passes. Most common reason for a fail: Chassis condition (rear).

Summary

The 2003 Suzuki Jimny follows the pattern of the model years either side.

At a glance

How 1,448 first tests went in 2025.

Passed first time
60 in every 100
Did not pass first time
40 in every 100580 failed first-attempt tests
The typical car
22 yearsabout 88,806 miles
First tests counted
1,448

What failed most often

  1. Chassis condition (rear)14 in every 100 failed tests
  2. Individual sidelight or tail light (front)11 in every 100 failed tests
  3. Petrol emissions (with catalyst)11 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.

Note:

These are patterns across 2003 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): 8.5 times as often as on similar cars.

Figures below are measured across the 579 of 580 failed first attempts (99.8%) 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)

Failed on 79 first tests8.5 times as often as similar carsLikely evidence

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 55 first tests, 6.5 times as often as on similar cars.

Chassis condition (front)

Failed on 43 first tests7.6 times as often as similar carsLikely evidence

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.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage. Advisories count notes recorded on failed first tests only.

Seat belts and restraints

One fault: seat belt mounting area (rear), 7.3 times as often as on similar cars.

Seat belt mounting area (rear)

Failed on 39 first tests7.3 times as often as similar carsLikely evidence

What it means

A seat belt anchorage likely to become detached in the event of a collision is graded Dangerous. The load bearing structure near an anchorage, called a prescribed area, is Major when its strength or continuity is significantly reduced or it is inadequately repaired. Anchorage points are inspected for all seat belts fitted, except a belt with no corresponding seat.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage.

Suspension

One fault: wheel bearings (front), 4.2 times as often as on similar cars.

Wheel bearings (front)

Failed on 37 first tests4.2 times as often as similar carsLikely evidence

What it means

Excessive play in a wheel bearing, or a bearing that is excessively rough, is Major. Play so excessive that the bearing is likely to break up or directional control is impaired is Dangerous, and so is a bearing so rough that it is likely to overheat or break up.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 26 first tests, 2.8 times as often as on similar cars.

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

Two faults. The strongest is the rigid brake pipes: 3.4 times as often as on similar cars.

Rigid brake pipes

Failed on 21 first tests3.4 times as often as similar carsPossible evidence

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.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 75 first tests, 2.8 times as often as on similar cars.

Brake efficiency below minimum (roller test)

Failed on 25 first tests2.4 times as often as similar carsPossible evidence

What it means

Service brake efficiency below the minimum requirement is Major, and efficiency less than half of the required value is graded Dangerous. On a roller brake tester, if more than half of the wheels of a brake system lock, the efficiency requirement for that system counts as met.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage. Advisories count notes recorded on failed first tests only.

Lamps and electrical

One fault: horn, 2.2 times as often as on similar cars.

Horn

Failed on 20 first tests2.2 times as often as similar carsPossible evidence

What it means

A horn that does not work, or is likely to be confused with an emergency vehicle siren, is graded Major. Gongs, bells, sirens and anything with more than one tone, which includes a horn that alternates between its notes, are not allowed, except a gong, bell or siren on vehicles first used before a set date. Sound defects are Minor for named cases such as a bell or harsh sound, and Major under a general row.

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.

Swivel pins and bushes (front)

Noted on 20 first tests73 times as often as similar carsPossible evidence

Vehicle structure condition

Noted on 25 first tests3.6 times as often as similar carsElevated evidence

Non-component advisories

Noted on 81 first tests2.7 times as often as similar carsElevated evidence

Suspension arm pins and bushes (rear)

Noted on 24 first tests2.4 times as often as similar carsElevated evidence

Coil spring (front)

Noted on 49 first tests2.2 times as often as similar carsElevated evidence

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
6in every 100
Failed, then fixed at the test station the same day.
Failed
34in every 100
Did not pass, and were not fixed at the test station.

First-attempt pass 59.9% of 1,448 first tests (2025): only cars that passed first time count. Official-style pass 66.0%: cars fixed at the test station also count as a pass. The 6 fixed and the 34 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.

40608010020002003201020152020Older carsNewer cars
4060801002000200320102020Newer cars

Newer cars are younger, so look for a jump rather than the climb.

YearPassed first timeFirst tests
200060 in every 100558
200160 in every 100709
200260 in every 1001,092
2003 This car60 in every 1001,448
200459 in every 1001,707
200559 in every 1001,424
200658 in every 1001,308
200757 in every 1001,370
200867 in every 1001,036
200965 in every 100769
201065 in every 100617
201171 in every 100699
201270 in every 100854
201375 in every 100891
201476 in every 100844
201576 in every 100949
201678 in every 1001,008
201778 in every 100912
201881 in every 100489
201989 in every 1001,175
202091 in every 100879
202195 in every 100399
202296 in every 100428

FAQs

Short answers about how to read this model-year guide.

The 2003 Suzuki Jimny follows the pattern of the model years either side. Its main cause of failure was Chassis condition (rear), about 14 in every 100 failed tests. In 2025, 59.9% of 1,448 first MOTs on the 2003 Suzuki Jimny passed first time (PRS: items fixed at the station the same day, counted as a fail). The official-style rate including PRS is 66.0%. Among 580 failed first-attempt MOT tests (test year 2025), Chassis condition (rear) appears more often than on similar cars (13.6% of those tests; 79 observed failures; about 8.5× more often than similar cars). There is no single reliability score here; this is a pre-purchase checklist built from DVSA open data, not a guarantee for any individual car.
Ranked by how often they were actually recorded, the items that most often failed a 2003 Suzuki Jimny at the first attempt were Chassis condition (rear) (13.6%), Individual sidelight or tail light (front) (10.9%) and Petrol emissions (with catalyst) (10.7%), each as a share of the year's failed first attempts. That is what goes wrong most often on the car. The common faults table shows a different measure: faults that are unusual compared with similar cars.
Among failed first-attempt tests we highlight patterns that appear more often than on similar cars. Top example: Chassis condition (rear) (13.6% of those tests; 79 observed failures; about 8.5× more often than similar cars). These are statistical signals, not a diagnosis of any individual car.
Chassis condition (rear) shows up more often than on similar cars (13.6% of those tests; 79 observed failures; about 8.5× more often than similar cars). That does not prove a design fault. Age, mileage, and how the car was used still matter. Treat it as a pre-purchase checkpoint, not a manufacturer service bulletin.
Common MOT problem areas for the 2003 Suzuki Jimny include Chassis condition (rear), Seat belt mounting area (rear), Wheel bearings (front). These are the faults that stand out compared with similar cars, not a complete list of what can go wrong on any individual car.
Advisories flag issues noted at the test and are not a fail rate. We show advisory patterns that appear more often than on similar cars among failed first-attempt tests, separate from common failure rows. Use them as early-warning checks, not as a pass/fail score.
This page highlights MOT failure patterns for the 2003 Suzuki Jimny (registration year) using UK DVSA open data for the selected test year. Patterns are compared with cars of a similar age and mileage. It is a buyer checklist from MOT defect statistics, not a full service history or manufacturer service-bulletin list.
No. MOT tests do not cover engine internals, gearboxes, or many electronic modules. Patterns here come from MOT defect statistics only and should not be read as engine or gearbox reliability scores.

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.

2024 2025

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.

Check any vehicle’s MOT history

Full MOT history, mileage records, and reliability insights for any UK vehicle.

Run a free check