1990 Land Rover Discovery — MOT failures & pass rate
The 1990 Land Rover Discovery passed 81.8% of its 551 recorded MOT tests. Large SUVs of a similar age fail 23.6% of the time, so this is 5.4pp better than the group it competes with. Failures cluster in lighting & signalling, body, structure & corrosion and visibility.
What the MOT record shows
Lighting & signalling dominates the failure mix at 13.8% of all tests — 7.1 points clear of body, structure & corrosion, so it is the first thing to check.
At component level the recurring items are headlamp aim, headlamp and wipers — headlamp aim alone was recorded 39 times.
Mileage matters less than usual here: the 1990 Discovery fails 19.2% of the time in the 60-90k band and 17.9% at 150k+, a spread of only 1.3 points.
Advisories point at the next bill rather than this one: emissions & environmental was flagged on 20.7% of tests without failing them.
The trend is improving — the fail rate fell from 19.8% in 2021 to 15.5% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 13.8% | 76 |
| 2 | Body, structure & corrosion | 6.7% | 37 |
| 3 | Visibility | 5.6% | 31 |
| 4 | Brakes | 5.4% | 30 |
| 5 | Suspension | 5.3% | 29 |
| 6 | Steering | 4.4% | 24 |
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 | 39 |
| 2 | Headlamp | 34 |
| 3 | Wipers | 22 |
| 4 | Prescribed areas | 21 |
| 5 | Chassis condition | 21 |
| 6 | Integral vehicle structure condition | 20 |
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 | 20.7% | 114 |
| 2 | Body, structure & corrosion | 18.9% | 104 |
| 3 | Brakes | 17.6% | 97 |
| 4 | Suspension | 17.2% | 95 |
| 5 | Steering | 13.6% | 75 |
| 6 | Tyres | 8.9% | 49 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 60-90k | 52 | 19.2% |
| 90-120k | 99 | 18.2% |
| 120-150k | 122 | 16.4% |
| 150k+ | 229 | 17.9% |
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 446 | 15.9% |
| Petrol | 105 | 27.6% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 126 | 19.8% |
| 2022 | 119 | 16.8% |
| 2023 | 108 | 19.4% |
| 2024 | 101 | 18.8% |
| 2025 | 97 | 15.5% |
What to check before buying a 1990 Discovery
On a 1990 Discovery, lighting & signalling is what the MOT record says goes wrong most — it appeared in 13.8% of tests. Check these areas before you commit.
- Lighting & signalling (13.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Body, structure & corrosion (6.7% 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+.
- Visibility (5.6% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£150.
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 1990 Land Rover Discoverys pass their MOT?
81.8% of the 551 1990 Land Rover Discovery MOT tests in this dataset passed — a 18.1% fail rate.
What is the most common MOT failure on a 1990 Land Rover Discovery?
Lighting & signalling, recorded in 13.8% of tests, followed by body, structure & corrosion (6.7%).
Does the 1990 Discovery get worse with mileage?
Its MOT fail rate rises from 19.2% in the 60-90k band to 17.9% in the 150k+ band.
Methodology & source. Based on 551 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.