How reliable is the Isuzu Trooper compared with other cars?

We do not publish a comparison for the Isuzu Trooper, because the cars of this model that have been tested do not cover a wide enough range of ages and mileages. Its raw pass rate is 62.4% across 1,897 tests, but comparing a raw rate between models mostly ranks them by how new they are rather than how good they are. The failure and advisory patterns further down the page are still drawn from real tests and are worth reading.

What do testers most often warn about on a Isuzu Trooper?

The most common advisory is "Brake pipe damaged or excessively corroded", noted on 36.9% of all Isuzu Trooper tests. An advisory is not a failure: it flags something that will likely need attention before the next test.

What mileage does a Isuzu Trooper usually have at its MOT?

The average odometer reading recorded at test is 140,124 miles. This is the mileage across all tested examples of every age, not an annual figure, so treat it as a description of the fleet rather than a target for one car.

Are most Isuzu Trooper models petrol or diesel?

Of the Isuzu Trooper cars tested, 92% are diesel, 8% are petrol. Fuel type affects which items tend to fail, particularly emissions and exhaust components.

Model reliability file

Isuzu Trooper MOT pass rate & common failures

From 1,897 recorded MOT tests of the Isuzu Trooper, published by DVSA.

Data updated 29 July 2026

Quick answer

Across 1,897 MOT tests, 62.4% of Isuzu Trooper tests ended in a pass. This figure is not adjusted for age or mileage, so it is not a reliability ranking: the Isuzu Trooper fleet does not yet cover a wide enough spread of ages and distances to compare it fairly against other models. Its most commonly recorded failure is transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, which appears in 23.2% of failed tests. Cars of this model average 140,124 miles on the odometer when tested.

At a glance

Recorded pass rate

62.4%unadjusted, not comparable1,897 tests

We are not publishing a ranking for the Trooper. The examples tested do not cover a wide enough spread of ages and mileages to compare it fairly, and an unadjusted pass rate mostly sorts models by how recently they were bought rather than how well they were built. The failure and advisory patterns below come from the same 1,897 tests and are worth reading on their own terms.

DVSA recorded wording

Most common failure items

Share of failed Isuzu Trooper tests in which each item was recorded. One failed test often lists several items, so these do not sum to 100%.

1.A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc23.2%
141 occurrencesDriveshaft CV joint gaiter split or missing explained
2.Body, cab or chassis excessively corroded at a mounting point17.8%
108 occurrencesCorrosion in a structural area explained
3.A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning16.4%
100 occurrencesLamp not working explained
4.The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired15.3%
93 occurrencesSeat belt anchorage corroded or weakened explained
5.Brake pipe damaged or excessively corroded13.7%
83 occurrencesBrake pipe corroded explained
6.Exhaust system leaking or insecure13.7%
83 occurrencesExhaust leaking or insecure explained
7.A suspension pin, bush or joint excessively worn11.7%
71 occurrencesSuspension arm bush worn explained
8.Wiper blade missing or obviously not clearing the windscreen10.9%
66 occurrencesWiper or washer not working properly explained
9.The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired10.9%
66 occurrencesSuspension mounting corroded or insecure explained
10.A suspension pin, bush or joint excessively worn9.0%
55 occurrencesSuspension arm bush worn explained

Warnings without a failure

Most common advisories

Share of all Isuzu Trooper tests carrying each advisory. The denominator differs from the failure list above because an advisory can be issued on a car that passed.

1.Brake pipe damaged or excessively corroded36.9%
699 testsBrake pipe corroded explained
2.Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users26.1%
495 tests
3.A wheel bearing with excessive play20.7%
393 testsWheel bearing has excessive play or is rough explained
4.A tyre seriously damaged14.1%
267 testsTyre damaged or deteriorated explained
5.Brake disc or drum excessively weakened, insecure or fractured11.8%
223 testsBrake disc worn, pitted or scored explained
6.Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced11.6%
219 testsCorrosion in a structural area explained
7.Tyre tread depth not in accordance with the requirements11.5%
218 testsTyre worn close to the legal limit explained
8.A spring or spring component fractured or seriously weakened9.9%
188 testsRoad spring broken or fractured explained

What gets tested

The Trooper fleet

Average mileage recorded at test: 140,124
Fuel mix of tested cars: Diesel92.4%
Petrol7.5%

Trim names grouped into this model (6)

Recorded exactly as DVSA holds them. Trim-level names are rolled up so one model is not split across a dozen thin pages.

TROOPER LWB
TROOPER LWB TURBO D
TROOPER SE
TROOPER SWB
TROOPER SWB TURBO D
TROOPER TD LWB

Check a specific Isuzu Trooper

A model average tells you the pattern. Its own MOT record tells you the car.

Compare within the range

Other Isuzu models

Isuzu D-Max — 72.3% adjusted
Isuzu Rodeo — 55.1% unadjusted
Isuzu TF — 52.7% unadjusted
All Isuzu models

Common questions

How reliable is the Isuzu Trooper compared with other cars?: We do not publish a comparison for the Isuzu Trooper, because the cars of this model that have been tested do not cover a wide enough range of ages and mileages. Its raw pass rate is 62.4% across 1,897 tests, but comparing a raw rate between models mostly ranks them by how new they are rather than how good they are. The failure and advisory patterns further down the page are still drawn from real tests and are worth reading.
What is the most common MOT failure on a Isuzu Trooper?: The item recorded most often is "A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc", which appears in 23.2% of failed Isuzu Trooper tests. Because one failed test can list several items, these shares do not add up to 100%.
What do testers most often warn about on a Isuzu Trooper?: The most common advisory is "Brake pipe damaged or excessively corroded", noted on 36.9% of all Isuzu Trooper tests. An advisory is not a failure: it flags something that will likely need attention before the next test.
What mileage does a Isuzu Trooper usually have at its MOT?: The average odometer reading recorded at test is 140,124 miles. This is the mileage across all tested examples of every age, not an annual figure, so treat it as a description of the fleet rather than a target for one car.
Are most Isuzu Trooper models petrol or diesel?: Of the Isuzu Trooper cars tested, 92% are diesel, 8% are petrol. Fuel type affects which items tend to fail, particularly emissions and exhaust components.

How this was worked out

Method and limits

Figures come from the DVSA anonymised MOT testing dataset, published under the Open Government Licence. Only class 4 initial tests are counted: retests are excluded so a car appears once, and abandoned tests are excluded entirely. No adjusted rate is shown because this model's tested examples do not cover enough of the national age and mileage range for standardisation to mean anything.

An MOT measures whether a car met a legal standard on the day. It is not a breakdown record, a service history or a running-cost estimate, and a pass rate is a property of a fleet rather than a prediction about one car.