How reliable is the Fiat Hymer compared with other cars?

We do not publish a comparison for the Fiat Hymer, because the cars of this model that have been tested do not cover a wide enough range of ages and mileages.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 74.8% across 1,636 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 Fiat Hymer?

The item recorded most often is "The aim of a headlamp is not within limits laid down in the requirements", which appears in 13.8% of failed Fiat Hymer 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 Fiat Hymer?

The most common advisory is "A wheel bearing with excessive play", noted on 14.1% of all Fiat Hymer tests. An advisory is not a failure: it flags something that will likely need attention before the next test.

What mileage does a Fiat Hymer usually have at its MOT?

The average odometer reading recorded at test is 59,122 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.

Does a Fiat Hymer get harder to pass as it ages?

Yes. At 3 to 5 years old, 88.8% of Fiat Hymer tests pass. By fifteen years or more, that falls to 63.5%. Nearly every model follows this pattern, which is why comparing raw pass rates between models is misleading unless age is accounted for.

Model reliability file

Fiat Hymer MOT pass rate & common failures

From 1,636 recorded MOT tests of the Fiat Hymer, published by DVSA.

Data updated 29 July 2026

Quick answer

Across 1,636 MOT tests, 74.8% of Fiat Hymer tests ended in a pass. This figure is not adjusted for age or mileage, so it is not a reliability ranking: the Fiat Hymer 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 aim of a headlamp is not within limits laid down in the requirements, which appears in 13.8% of failed tests. Cars of this model average 59,122 miles on the odometer when tested.

At a glance

Recorded pass rate

74.8%unadjusted, not comparable1,636 tests

We are not publishing a ranking for the Hymer. 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 1,636 tests and are worth reading on their own terms.

DVSA recorded wording

Most common failure items

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

1.The aim of a headlamp is not within limits laid down in the requirements13.8%
46 occurrencesHeadlamp aim incorrect explained
2.Wiper blade missing or obviously not clearing the windscreen12.6%
42 occurrencesWiper or washer not working properly explained
3.Parking brake efficiency below minimum requirement12.6%
42 occurrencesParking brake efficiency too low explained
4.A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning11.7%
39 occurrencesLamp not working explained
5.Service brake efficiency below minimum requirement9.6%
32 occurrencesBraking efficiency below requirement explained
6.Significant brake effort recorded with no brake applied indicating a binding brake9.3%
31 occurrencesBrake binding or imbalanced across an axle explained
7.A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning8.4%
28 occurrencesLamp not working explained
8.Audible warning inoperative7.5%
25 occurrencesHorn not working, or of the wrong type explained
9.A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc7.2%
24 occurrencesDriveshaft CV joint gaiter split or missing explained
10.Windscreen washers not working or not providing sufficient fluid to clear the windscreen6.9%
23 occurrencesWiper or washer not working properly explained

Warnings without a failure

Most common advisories

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

1.A wheel bearing with excessive play14.1%
231 testsWheel bearing has excessive play or is rough explained
2.A tyre seriously damaged10.7%
175 testsTyre damaged or deteriorated explained
3.Brake disc or drum excessively weakened, insecure or fractured8.0%
131 testsBrake disc worn, pitted or scored explained
4.Brake pipe damaged or excessively corroded7.9%
129 testsBrake pipe corroded explained
5.Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users7.3%
119 tests
6.Tyre tread depth not in accordance with the requirements5.2%
85 testsTyre worn close to the legal limit explained
7.Exhaust system leaking or insecure3.1%
50 testsExhaust leaking or insecure explained
8.Significant brake effort recorded with no brake applied indicating a binding brake2.8%
45 testsBrake binding or imbalanced across an axle explained

How wear changes the picture

Pass rate by vehicle age

3–5 yrs89%

6–8 yrs90%

9–11 yrs86%

15+ yrs64%

Bands holding too few tests to be meaningful are omitted rather than shown as a rate.

What gets tested

The Hymer fleet

Average mileage recorded at test: 59,122
Fuel mix of tested cars: Diesel99.9%

Trim names grouped into this model (17)

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

HYMER 2.3
HYMER B524
HYMER B534
HYMER B544
HYMER B564
HYMER B584
HYMER B584 MOTORHOME
HYMER B644 MOTORHOME
HYMER B674
HYMER B694 MOTORHOME
HYMER C644
HYMER E650
HYMER LWB MOTORHOME
HYMER MOTOR HOME
HYMER MOTORHOME
HYMER MULTIJET
HYMER STAR EDITION

Check a specific Fiat Hymer

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

Compare within the range

Other Fiat models

Fiat 500 — 65.3% adjusted
Fiat Panda — 65.2% adjusted
Fiat Ducato — 73.4% adjusted
Fiat Punto — 56.5% adjusted
Fiat Doblo — 65.4% adjusted
Fiat 500X — 75.2% adjusted
All Fiat models

Common questions

How reliable is the Fiat Hymer compared with other cars?: We do not publish a comparison for the Fiat Hymer, 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 74.8% across 1,636 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 Fiat Hymer?: The item recorded most often is "The aim of a headlamp is not within limits laid down in the requirements", which appears in 13.8% of failed Fiat Hymer 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 Fiat Hymer?: The most common advisory is "A wheel bearing with excessive play", noted on 14.1% of all Fiat Hymer tests. An advisory is not a failure: it flags something that will likely need attention before the next test.
What mileage does a Fiat Hymer usually have at its MOT?: The average odometer reading recorded at test is 59,122 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.
Does a Fiat Hymer get harder to pass as it ages?: Yes. At 3 to 5 years old, 88.8% of Fiat Hymer tests pass. By fifteen years or more, that falls to 63.5%. Nearly every model follows this pattern, which is why comparing raw pass rates between models is misleading unless age is accounted for.

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.