1987 BMW 3 Series — MOT failures & pass rate
Across 2,200 MOT tests, the 1987 BMW 3 Series recorded an 83.9% pass rate. Against executive cars of a similar age (17.3% fail rate), the 1987 3 Series comes out 1.2pp better. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 11.2% of tests against 6.0% for the next-worst category.
At component level the recurring items are headlamp aim, washers and component mounting prescribed areas — headlamp aim alone was recorded 100 times.
A 150k+ example is materially riskier than a 0-30k one: 17.6% versus 8.0%.
Suspension is the most common advisory, noted on 20.6% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 18.3% in 2021 to 13.2% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 11.2% | 246 |
| 2 | Brakes | 6.0% | 133 |
| 3 | Suspension | 5.9% | 129 |
| 4 | Visibility | 5.0% | 110 |
| 5 | Body, structure & corrosion | 4.2% | 93 |
| 6 | Emissions & environmental | 3.0% | 66 |
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 | 100 |
| 2 | Washers | 95 |
| 3 | Component mounting prescribed areas | 88 |
| 4 | Headlamp | 64 |
| 5 | Position lamp | 58 |
| 6 | Individual direction indicators | 49 |
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 | 20.6% | 454 |
| 2 | Brakes | 19.6% | 430 |
| 3 | Emissions & environmental | 16.1% | 354 |
| 4 | Other defects | 11.3% | 249 |
| 5 | Body, structure & corrosion | 10.9% | 241 |
| 6 | Tyres | 10.0% | 220 |
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 | 50 | 8.0% |
| 30-60k | 160 | 13.1% |
| 60-90k | 379 | 16.6% |
| 90-120k | 644 | 16.9% |
| 120-150k | 560 | 15.2% |
| 150k+ | 398 | 17.6% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 503 | 18.3% |
| 2022 | 468 | 16.4% |
| 2023 | 423 | 16.6% |
| 2024 | 396 | 15.4% |
| 2025 | 410 | 13.2% |
What to check before buying a 1987 3 Series
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 11.2% of tests. Start there.
- Lighting & signalling (11.2% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (6.0% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
- Suspension (5.9% 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 1987 BMW 3 Seriess pass their MOT?
83.9% of the 2,200 1987 BMW 3 Series MOT tests in this dataset passed — a 16.1% fail rate.
What is the most common MOT failure on a 1987 BMW 3 Series?
Lighting & signalling, recorded in 11.2% of tests, followed by brakes (6.0%).
Does the 1987 3 Series get worse with mileage?
Its MOT fail rate rises from 8.0% in the 0-30k band to 17.6% in the 150k+ band.
Methodology & source. Based on 2,200 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.