Model Reports 5 min read Updated 18 Oct 2026

BMW X5 2004: reliability & common MOT faults

In 2025, 63 in every 100 first MOTs on a 2004 BMW X5 were passes. Most common reason for a fail: Drive shaft joints and boots (front).

Summary

The 2004 BMW X5 follows the pattern of the model years either side.

At a glance

How 2,090 first tests went in 2025.

Passed first time
63 in every 100
Did not pass first time
37 in every 100776 failed first-attempt tests
The typical car
21 yearsabout 146,159 miles
First tests counted
2,090

What failed most often

  1. Drive shaft joints and boots (front)21 in every 100 failed tests
  2. Handbrake efficiency below minimum (roller test)14 in every 100 failed tests
  3. Suspension arm ball joint (front)13 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 2004 BMW X5 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 suspension arm ball joint (rear): 38 times as often as on similar cars.

Figures below are measured across the 768 of 776 failed first attempts (99.0%) 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.

Suspension arm ball joint (rear)

Failed on 39 first tests38 times as often as similar carsLikely evidence

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.

Suspension sub-frame (rear)

Failed on 20 first tests7.3 times as often as similar carsPossible evidence

What it means

A suspension sub-frame insecurely attached to the chassis or axle is Major, and Dangerous when it is insecure and impairing directional stability. A sub-frame that is missing, likely to become detached, fractured or likely to fail is also Dangerous. Excessive damage or corrosion that seriously weakens it is Major.

Suspension arm pins and bushes (rear)

Failed on 20 first tests2.6 times as often as similar carsPossible evidence

What it means

Pins and bushes on suspension arms fail as Major when they are excessively worn. They are graded Dangerous when likely to become detached. DVSA uses the same wording for a suspension joint.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 51 first tests, 2.6 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.

Body and structure

Four faults. The strongest is the front passenger door condition: 22 times as often as on similar cars.

Front passenger door condition

Failed on 21 first tests22 times as often as similar carsPossible evidence

What it means

A front passenger door that will not open from inside or outside, or does not latch securely closed, is Major. The opening defects do not apply on goods vehicles modified to carry high value cargoes, such as armoured security vehicles, or where the aperture was permanently filled as a specialised customisation with no obvious gaps. A hinged door likely to open inadvertently is Dangerous, the sliding door version Major.

Driver's door condition

Failed on 21 first tests17 times as often as similar carsPossible evidence

What it means

Doors without handles by original design or specialist modification are not a defect so long as the door latches securely closed and can still be opened using the relevant control, such as a button or a fob. A door likely to open inadvertently or not remain closed is Major on a sliding door and graded Dangerous on a hinged one.

Other passenger door condition (rear)

Failed on 29 first tests6.8 times as often as similar carsPossible evidence

What it means

A lack of door handles is not a defect where it comes from the original design or a specialist modification, provided the door latches securely closed and opens using a control such as a button or a fob. Hinges, catches and pillars are rejected for deterioration only if the doors stop working as intended. A hinged door likely to open inadvertently or not remain closed is graded Dangerous.

Drive shaft joints and boots (front)

Failed on 163 first tests3.1 times as often as similar carsLikely evidence

What it means

A constant velocity boot that is only severely deteriorated is Minor. It is Major once it is missing, split or insecure so that it no longer prevents the ingress of dirt. A transmission joint excessively worn is Major, and graded Dangerous when it is so worn it is likely to fail.

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

Brakes

One fault: handbrake efficiency below minimum (decelerometer test), 13 times as often as on similar cars.

Handbrake efficiency below minimum (decelerometer test)

Failed on 59 first tests13 times as often as similar carsLikely evidence

What it means

A parking brake with efficiency below the minimum requirement is graded Major, and efficiency less than half of the required value is graded Dangerous. This check applies only to vehicles whose parking brake has not already been tested as the secondary brake.

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

Seat belts and restraints

One fault: seat belt condition (rear), 3.0 times as often as on similar cars.

Seat belt condition (rear)

Failed on 24 first tests3.0 times as often as similar carsPossible evidence

What it means

Any sign of overstretching is a deficiency, and so is a cut anywhere on a child seat belt. On other belts the size of a cut decides it, with a stricter limit at the webbing edge than away from it. Webbing significantly stretched or weakened has rows in both Major and Dangerous grades.

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

Tyres

Two wear patterns. The strongest is the tyre tread depth (rear): 2.4 times as often as on similar cars.

Tyre tread depth (rear)

Failed on 50 first tests2.4 times as often as similar carsWear pattern

What it means

Only primary grooves count when tread depth is assessed: those holding the wear indicators, or cut as deep as those when new. Shallower secondary grooves are ignored. Tread depth below the minimum for the vehicle is Dangerous, and so is a pattern not visible over the whole tread, but that second row applies only to vehicles that need the lower minimum.

Tyre condition (rear)

Failed on 76 first tests2.2 times as often as similar carsWear pattern

What it means

Exposed or damaged ply or cords are graded Dangerous. A cut in excess of the requirements and deep enough to reach the ply or cords is Major, and testers may open the cut with a blunt instrument to check its depth. A tyre contacting the vehicle through flexing or suspension movement is not a defect; fouling fails only at the time of test.

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.

Rigid brake pipes (front)

Noted on 122 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
63in 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
31in every 100
Did not pass, and were not fixed at the test station.

First-attempt pass 62.9% of 2,090 first tests (2025): only cars that passed first time count. Official-style pass 69.0%: cars fixed at the test station also count as a pass. The 6 fixed and the 31 not fixed make the 37 in every 100 that did not pass first time.

Petrol and diesel

First testsTypical mileagePassed first time, as testedPassed first time, same mileage
Diesel1,400156,693 miles6262
Petrol682127,402 miles6464

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.

4060801002004201020152020Older carsNewer cars
406080100200420102020Newer cars

Newer cars are younger, so look for a jump rather than the climb. A year earlier (2024), when these cars were a year younger, 61 in every 100 passed first time.

YearPassed first timeFirst tests
200164 in every 100379
200260 in every 100737
200362 in every 1001,326
2004 This car63 in every 1002,090
200562 in every 1003,827
200661 in every 1002,310
200769 in every 1002,666
200872 in every 1002,738
200971 in every 1003,386
201076 in every 1003,202
201176 in every 1003,423
201276 in every 1003,583
201378 in every 1003,113
201484 in every 1004,982
201585 in every 1006,460
201687 in every 1005,995
201786 in every 1005,716
201885 in every 1006,560
201987 in every 1007,936
202088 in every 1004,592
202185 in every 1005,891
202284 in every 1007,199

If you are buying one

What this year's MOT record means for the decision in front of you.

Mileage makes little difference on a 2004 BMW X5.

Of 2004 BMW X5 vehicles with under 114,000 miles, 61 in every 100 passed their 2025 MOT first time. With 177,000 miles or more, 62 in every 100 did.

Under 114,000417 tests
61
114,000–137,000409 tests
61
137,000–156,000 Typical car410 tests
69
156,000–177,000420 tests
63
177,000 and over417 tests
62

Petrol or diesel?

Typical mileagePassed first time,
as tested		Passed first time,
same mileage
Diesel156,693 miles6262
Petrol127,402 miles6464

Figures are in every 100 first tests. Petrol cars look better on the raw figures only because diesel cars have done more miles (typically 156,693 against 127,402). 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 114,000137,000–156,000177,000 and over
Drive shaft joints and boots (front)7.46.67.9
Handbrake efficiency below minimum (roller test)2.25.97.0
Suspension arm ball joint (front)4.64.46.0
Tyre condition (rear)3.62.72.6
Individual sidelight or tail light (front)3.43.42.4

Faults per 100 first tests, by the car's mileage at the test.

When a car fails

22in every 100

of failed cars had one item to fix.

59in every 100

of failed cars had three or more items to fix.

11in every 100

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.

The 2004 BMW X5 follows the pattern of the model years either side. Its main cause of failure was Drive shaft joints and boots (front), about 21 in every 100 failed tests. In 2025, 62.9% of 2,090 first MOTs on the 2004 BMW X5 passed first time (PRS: items fixed at the station the same day, counted as a fail). The official-style rate including PRS is 69.0%. Among 776 failed first-attempt MOT tests (test year 2025), Suspension arm ball joint (rear) appears more often than on similar cars (5.1% of those tests; 39 observed failures; about 38× 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 2004 BMW X5 at the first attempt were Drive shaft joints and boots (front) (21.2%), Handbrake efficiency below minimum (roller test) (13.5%) and Suspension arm ball joint (front) (13.4%), 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: Suspension arm ball joint (rear) (5.1% of those tests; 39 observed failures; about 38× more often than similar cars). These are statistical signals, not a diagnosis of any individual car.
Suspension arm ball joint (rear) shows up more often than on similar cars (5.1% of those tests; 39 observed failures; about 38× 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 2004 BMW X5 include Suspension arm ball joint (rear), Front passenger door condition, Driver's door condition. 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 2004 BMW X5 (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.

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