1985 Land Rover Defender — MOT failures & pass rate
7,759 MOT tests on the 1985 Land Rover Defender are in this dataset, and 77.6% of them passed. That is effectively the same as large SUVs of a similar age (22.4% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in lighting & signalling, body, structure & corrosion and suspension.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 17.0% of tests against 9.2% for the next-worst category.
At component level the recurring items are headlamp aim, position lamp and chassis condition — headlamp aim alone was recorded 519 times.
A 150k+ example is materially riskier than a 0-30k one: 24.3% versus 19.3%.
Fuel type barely separates them — petrol fails 21.4% of the time against 22.6% for diesel.
Emissions & environmental is the most common advisory, noted on 29.7% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 24.1% in 2021 to 20.3% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 17.0% | 1,315 |
| 2 | Body, structure & corrosion | 9.2% | 713 |
| 3 | Suspension | 8.0% | 624 |
| 4 | Brakes | 7.8% | 608 |
| 5 | Steering | 7.5% | 582 |
| 6 | Visibility | 6.1% | 470 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp aim | 519 |
| 2 | Position lamp | 418 |
| 3 | Chassis condition | 386 |
| 4 | Washers | 330 |
| 5 | Rear fog lamp | 318 |
| 6 | Headlamp | 313 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Emissions & environmental | 29.7% | 2,307 |
| 2 | Suspension | 25.7% | 1,990 |
| 3 | Brakes | 18.8% | 1,462 |
| 4 | Steering | 18.8% | 1,461 |
| 5 | Body, structure & corrosion | 15.8% | 1,230 |
| 6 | Tyres | 10.1% | 787 |
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 | 482 | 19.3% |
| 30-60k | 492 | 20.3% |
| 60-90k | 789 | 19.0% |
| 90-120k | 1,541 | 22.7% |
| 120-150k | 1,677 | 21.9% |
| 150k+ | 2,756 | 24.3% |
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 6,396 | 22.6% |
| Petrol | 1,350 | 21.4% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,591 | 24.1% |
| 2022 | 1,692 | 24.2% |
| 2023 | 1,589 | 21.4% |
| 2024 | 1,526 | 21.3% |
| 2025 | 1,361 | 20.3% |
What to check before buying a 1985 Defender
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 17.0% of tests. Start there.
- Lighting & signalling (17.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Body, structure & corrosion (9.2% 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 (8.0% 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 1985 Land Rover Defenders pass their MOT?
77.6% of the 7,759 1985 Land Rover Defender MOT tests in this dataset passed — a 22.4% fail rate.
What is the most common MOT failure on a 1985 Land Rover Defender?
Lighting & signalling, recorded in 17.0% of tests, followed by body, structure & corrosion (9.2%).
Does the 1985 Defender get worse with mileage?
Its MOT fail rate rises from 19.3% in the 0-30k band to 24.3% in the 150k+ band.
Methodology & source. Based on 7,759 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.