Model Reports 8 min read Updated 11 Sep 2026 DVSA open data · 5,295 tests analysed

Land Rover Discovery 2004: reliability & common MOT faults

1,860 first-attempt MOT failures were recorded on the 2004 Land Rover Discovery in 2025. Figures are among first-attempt failed MOT tests, not among all tests.

Position lamp (front) was the most common reason a 2004 Discovery failed its MOT — 12.3% of its failed first attempts.

First-attempt pass

64.9%

of 5,295 first tests (2025)

First tests

5,295

test year 2025

Failed first attempts

1,860

failed first-attempt tests

MOT pass rates

First-attempt and official-style rates among class 4 first tests of the year.

First-attempt pass

64.9%

of 5,295 first tests (2025)

Official-style pass

71.2%

incl. same-day PRS fixes

First tests

5,295

class 4 · first MOT of the year

Typical age 21.0 yrs · median mileage 150,810 mi

vs 2024: +1.5 pp first-attempt

Note:

  • Class 4 cars · first MOT of the year per vehicle · P/PRS/F outcomes (2025 data).
  • PRS (fixed at the station the same day) counts as a fail in the first-attempt rate.
  • Raw outcomes for this cohort — not adjusted for age, mileage, or peer mix.
  • MOT doesn't test engine or gearbox internals.

Common faults

Failure patterns that show up more often on this registration year than on similar cars.

These MOT failure patterns show up more often on this registration year than on similar cars of the same class, age, and mileage.

Shares below are measured across the 1,857 of 1,860 failed first attempts (99.8%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.

Standout: Chassis condition (rear) — 11.3% of this year's failed first attempts

Recorded on 210 of those tests. It tops the table on elevation — about 5.8× more often than on similar cars of the same age and mileage. That is what makes it unusual for its class, which is a different question from what is most likely to fail; the buying checklist ranks by that. The full ranked list is in the table below.

Fault pattern Location Failures vs similar cars Share of fails Confidence
Master cylinder/servo mounting (front)
Brakes > Other components and prescribed areas > Prescribed areas > Master cylinder/servo mounting
 Front 49 ×95 2.6% Likely
Drag link end (front)
Steering > Steering linkage components > Drag link end
 Front 48 ×17 2.6% Likely
System
Body, chassis, structure > Fuel system > System
 Any 42 ×7.9 2.3% Likely
Linkage ball joints (rear)
Suspension > Anti-roll bars > Linkage ball joints
 Rear 88 ×6.2 4.7% Likely
Chassis condition (rear)
Body, chassis, structure > Chassis > Chassis condition
 Rear 210 ×5.8 11.3% Strong
Pins and bushes (rear)
Suspension > Suspension arms > Pins and bushes
 Rear 76 ×4.1 4.1% Likely
Electronic stability control
Brakes > ABS / EBS / ESC > Electronic stability control
 Any 51 ×3.4 2.7% Likely
Chassis condition (front)
Body, chassis, structure > Chassis > Chassis condition
 Front 74 ×3.2 4.0% Likely
Prescribed areas (rear)
Seat belts and supplementary restraint systems > Seat belts > Prescribed areas
 Rear 57 ×2.9 3.1% Possible
Anti-lock braking system
Brakes > ABS / EBS / ESC > Anti-lock braking system
 Any 172 ×2.5 9.3% Possible

Only patterns that clear minimum sample and elevation thresholds are shown (at least 20 failures and about 2.0× more often than similar cars).

Note: Rates and comparisons are among first-attempt failed tests, not all MOTs. Patterns come from MOT defect codes — not manufacturer service bulletins, recalls, or a diagnosis of any individual car. Failures and advisories are listed separately.

Advisories

Notes recorded at the test that appear more often than on similar cars.

Advisory notes recorded on failed first-attempt tests that appear more often than on similar cars.

Advisory pattern Location Notes vs similar cars Share Confidence
Steering box
Steering > Steering play > Steering box
 Any 20 ×7.2 1.1% Elevated
Ball joint (front)
Suspension > Other suspension component > Ball joint
 Front 33 ×6.4 1.8% Likely
Chassis condition (rear)
Body, chassis, structure > Chassis > Chassis condition
 Rear 166 ×4.9 8.9% Strong
Linkage ball joints (rear)
Suspension > Anti-roll bars > Linkage ball joints
 Rear 74 ×4.1 4.0% Likely
Chassis condition (front)
Body, chassis, structure > Chassis > Chassis condition
 Front 60 ×4.0 3.2% Likely
Transmission oil leaks (front)
Noise, emissions and leaks > Fluid leaks > Transmission oil leaks
 Front 25 ×3.8 1.3% Elevated
Transmission oil leaks (rear)
Noise, emissions and leaks > Fluid leaks > Transmission oil leaks
 Rear 121 ×3.7 6.5% Elevated
Seat belts — Condition (rear)
Seat belts and supplementary restraint systems > Seat belts > Condition
 Rear 30 ×3.1 1.6% Elevated
Note: Advisories are not a fail rate — they flag issues noted at the test, often before they become failures.

If you are buying one

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

Nothing separates this year from the Discoverys either side of it, so buy on the individual car. The checks below are the items that actually failed 2004 Discoverys, commonest first.

Other Discovery years worth knowing about

Newer cars always pass more often, so a plain "best year" list would just rank by age. These are the years that beat or miss the trend their own neighbouring years set — the only age-adjusted signal this data supports.

Year vs the years either side First-attempt pass (rises with newer cars) First tests
2006 Discovery -2.3 pp worse 61.1% 6,150

What to check on a 2004 Discovery

The items that failed 2004 Discoverys most often, as a share of the year's failed first attempts. This is what goes wrong, not what is unusual — the table further up the page covers that.

  • Position lamp (front) — recorded on 12.3% of failed first attempts
  • Chassis condition (rear) — recorded on 11.3% of failed first attempts
  • Component mounting prescribed areas (rear) — recorded on 9.9% of failed first attempts
  • Anti-lock braking system — recorded on 9.3% of failed first attempts
  • Headlamp aim — recorded on 9.2% of failed first attempts

Every figure here is a first-attempt MOT rate from DVSA open data for this model line. 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.

Position lamp (front) was the most common reason a 2004 Discovery failed its MOT — 12.3% of its failed first attempts. In 2025, 64.9% of 5,295 first MOTs on the 2004 Land Rover Discovery passed first time (PRS — items fixed at the station the same day — counted as a fail). The official-style rate including PRS is 71.2%. Among 1,860 failed first-attempt MOT tests (test year 2025), Chassis condition (rear) appears mor…
Ranked by how often they were actually recorded, the items that failed 2004 Land Rover Discoverys most often at the first attempt were Position lamp (front) (12.3%), Chassis condition (rear) (11.3%) and Component mounting prescribed areas (rear) (9.9%) — each as a share of the year's failed first attempts. That is what goes wrong on the car. It is a different question from which patterns are unusual for the class, w…
Among failed first-attempt tests we highlight patterns that appear more often than on similar cars. Top example: Chassis condition (rear) (11.3% of those tests; 210 observed failures; about 5.8× 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 (11.3% of those tests; 210 observed failures; about 5.8× 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 check point, not a manufacturer service bulletin.
Common MOT problem areas for the 2004 Land Rover Discovery include Chassis condition (rear), Master cylinder/servo mounting (front), Drag link end (front). These patterns show up more often than on similar cars after we filter out sparse noise — not a full list of every possible fault on an 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 Land Rover Discovery (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.
  • We never invent pass rates, star scores, or ranks when those data marts are missing.

Contains public sector information licensed under the Open Government Licence v3.0.

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