1998 Land Rover Discovery — MOT failures & pass rate
8,210 MOT tests on the 1998 Land Rover Discovery are in this dataset, and 76.5% of them passed. Against large SUVs of a similar age (24.5% fail rate), the 1998 Discovery comes out 1.0pp better. Failures cluster in lighting & signalling, body, structure & corrosion and suspension.
What the MOT record shows
Lighting & signalling dominates the failure mix at 16.6% of all tests — 4.7 points clear of body, structure & corrosion, so it is the first thing to check.
At component level the recurring items are prescribed areas, chassis condition and integral vehicle structure condition — prescribed areas alone was recorded 761 times.
Mileage is the strongest signal on the record: 18.2% of 0-30k cars fail, rising to 23.6% once past 150k.
Split by fuel, petrol examples fail 2.8pp more often than diesel ones (26.0% vs 23.2%) — worth weighing if you have a choice.
Advisories point at the next bill rather than this one: suspension was flagged on 33.8% of tests without failing them.
The trend is improving — the fail rate fell from 24.2% in 2021 to 21.3% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 16.6% | 1,362 |
| 2 | Body, structure & corrosion | 11.9% | 976 |
| 3 | Suspension | 10.6% | 871 |
| 4 | Brakes | 9.5% | 783 |
| 5 | Seat belts & restraints | 5.5% | 449 |
| 6 | Steering | 5.2% | 424 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Prescribed areas | 761 |
| 2 | Chassis condition | 705 |
| 3 | Integral vehicle structure condition | 702 |
| 4 | Headlamp aim | 587 |
| 5 | Component mounting prescribed areas | 574 |
| 6 | Position lamp | 435 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 33.8% | 2,778 |
| 2 | Emissions & environmental | 33.0% | 2,708 |
| 3 | Brakes | 26.1% | 2,139 |
| 4 | Body, structure & corrosion | 25.0% | 2,050 |
| 5 | Steering | 16.6% | 1,364 |
| 6 | Lighting & signalling | 13.2% | 1,081 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 33 | 18.2% |
| 30-60k | 133 | 15.0% |
| 60-90k | 475 | 22.3% |
| 90-120k | 1,072 | 23.6% |
| 120-150k | 1,868 | 24.0% |
| 150k+ | 4,606 | 23.6% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 7,506 | 23.2% |
| Petrol | 704 | 26.0% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 2,211 | 24.2% |
| 2022 | 1,937 | 24.9% |
| 2023 | 1,602 | 23.0% |
| 2024 | 1,312 | 22.5% |
| 2025 | 1,148 | 21.3% |
What to check before buying a 1998 Discovery
On a 1998 Discovery, lighting & signalling is what the MOT record says goes wrong most — it appeared in 16.6% of tests. Check these areas before you commit.
- Lighting & signalling (16.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Body, structure & corrosion (11.9% of tests): The one to take seriously on older cars — corrosion to structural areas can be costly and is an MOT failure. Typical repair: £200–£1,500+.
- Suspension (10.6% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 1998 Land Rover Discoverys pass their MOT?
76.5% of the 8,210 1998 Land Rover Discovery MOT tests in this dataset passed — a 23.4% fail rate.
What is the most common MOT failure on a 1998 Land Rover Discovery?
Lighting & signalling, recorded in 16.6% of tests, followed by body, structure & corrosion (11.9%).
Does the 1998 Discovery get worse with mileage?
Its MOT fail rate rises from 18.2% in the 0-30k band to 23.6% in the 150k+ band.
Methodology & source. Based on 8,210 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.