1986 Austin Mini Mayfair — MOT failures & pass rate
The 1986 Austin Mini Mayfair passed 79.0% of its 858 recorded MOT tests. All cars of a similar age fail at 20.4%, so the 1986 Mini Mayfair sits squarely on the average. Failures cluster in lighting & signalling, suspension and emissions & environmental.
What the MOT record shows
Lighting & signalling dominates the failure mix at 13.4% of all tests — 3.8 points clear of suspension, so it is the first thing to check.
At component level the recurring items are non catalyst emissions, service brake performance and headlamp aim — non catalyst emissions alone was recorded 82 times.
Mileage matters less than usual here: the 1986 Mini Mayfair fails 20.5% of the time in the 0-30k band and 19.4% at 90-120k, a spread of only 1.0 points.
Advisories point at the next bill rather than this one: suspension was flagged on 23.2% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 13.4% | 115 |
| 2 | Suspension | 9.6% | 82 |
| 3 | Emissions & environmental | 8.6% | 74 |
| 4 | Brakes | 8.2% | 70 |
| 5 | Visibility | 6.1% | 52 |
| 6 | Body, structure & corrosion | 5.2% | 45 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Non catalyst emissions | 82 |
| 2 | Service brake performance | 53 |
| 3 | Headlamp aim | 51 |
| 4 | Headlamp | 43 |
| 5 | Position lamp | 39 |
| 6 | Washers | 38 |
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 | 23.2% | 199 |
| 2 | Emissions & environmental | 16.1% | 138 |
| 3 | Brakes | 11.1% | 95 |
| 4 | Body, structure & corrosion | 10.8% | 93 |
| 5 | Tyres | 9.1% | 78 |
| 6 | Other defects | 6.8% | 58 |
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 | 210 | 20.5% |
| 30-60k | 309 | 22.0% |
| 60-90k | 296 | 19.9% |
| 90-120k | 36 | 19.4% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 180 | 22.2% |
| 2022 | 180 | 21.1% |
| 2023 | 185 | 18.9% |
| 2024 | 172 | 20.9% |
| 2025 | 141 | 22.0% |
What to check before buying a 1986 Mini Mayfair
On a 1986 Mini Mayfair, lighting & signalling is what the MOT record says goes wrong most — it appeared in 13.4% of tests. Check these areas before you commit.
- Lighting & signalling (13.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (9.6% 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.
- Emissions & environmental (8.6% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
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 1986 Austin Mini Mayfairs pass their MOT?
79.0% of the 858 1986 Austin Mini Mayfair MOT tests in this dataset passed — a 21.0% fail rate.
What is the most common MOT failure on a 1986 Austin Mini Mayfair?
Lighting & signalling, recorded in 13.4% of tests, followed by suspension (9.6%).
Does the 1986 Mini Mayfair get worse with mileage?
Its MOT fail rate rises from 20.5% in the 0-30k band to 19.4% in the 90-120k band.
Methodology & source. Based on 858 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.