1999 Land Rover Defender — MOT failures & pass rate
18,948 MOT tests on the 1999 Land Rover Defender are in this dataset, and 74.4% of them passed. Large SUVs of a similar age fail at 24.6%, so the 1999 Defender sits squarely on the average. Failures cluster in lighting & signalling, suspension and body, structure & corrosion.
What the MOT record shows
Lighting & signalling dominates the failure mix at 15.3% of all tests — 4.3 points clear of suspension, so it is the first thing to check.
At component level the recurring items are chassis condition, component mounting prescribed areas and headlamp aim — chassis condition alone was recorded 1,446 times.
Condition tracks the odometer closely. Failures run at 17.4% in the 0-30k band and 26.6% in the 150k+ band, a 9.2-point spread.
Advisories point at the next bill rather than this one: suspension was flagged on 29.7% of tests without failing them.
The trend is improving — the fail rate fell from 26.8% in 2021 to 24.1% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 15.3% | 2,905 |
| 2 | Suspension | 11.1% | 2,097 |
| 3 | Body, structure & corrosion | 10.4% | 1,971 |
| 4 | Steering | 8.6% | 1,637 |
| 5 | Brakes | 7.8% | 1,487 |
| 6 | Visibility | 6.6% | 1,246 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Chassis condition | 1,446 |
| 2 | Component mounting prescribed areas | 1,103 |
| 3 | Headlamp aim | 1,078 |
| 4 | Shock absorbers | 915 |
| 5 | Track rod end | 833 |
| 6 | Washers | 788 |
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 | 29.7% | 5,627 |
| 2 | Brakes | 26.3% | 4,975 |
| 3 | Emissions & environmental | 25.3% | 4,785 |
| 4 | Steering | 18.7% | 3,547 |
| 5 | Body, structure & corrosion | 17.7% | 3,348 |
| 6 | Seat belts & restraints | 14.0% | 2,649 |
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 | 397 | 17.4% |
| 30-60k | 816 | 20.7% |
| 60-90k | 2,339 | 23.0% |
| 90-120k | 3,747 | 25.3% |
| 120-150k | 4,546 | 27.2% |
| 150k+ | 7,037 | 26.6% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 18,532 | 25.7% |
| Petrol | 410 | 19.5% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 4,037 | 26.8% |
| 2022 | 3,942 | 26.6% |
| 2023 | 3,792 | 24.7% |
| 2024 | 3,692 | 25.5% |
| 2025 | 3,485 | 24.1% |
What to check before buying a 1999 Defender
On a 1999 Defender, lighting & signalling is what the MOT record says goes wrong most — it appeared in 15.3% of tests. Check these areas before you commit.
- Lighting & signalling (15.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (11.1% 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.
- Body, structure & corrosion (10.4% 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+.
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 1999 Land Rover Defenders pass their MOT?
74.4% of the 18,948 1999 Land Rover Defender MOT tests in this dataset passed — a 25.6% fail rate.
What is the most common MOT failure on a 1999 Land Rover Defender?
Lighting & signalling, recorded in 15.3% of tests, followed by suspension (11.1%).
Does the 1999 Defender get worse with mileage?
Its MOT fail rate rises from 17.4% in the 0-30k band to 26.6% in the 150k+ band.
Methodology & source. Based on 18,948 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.