Austin Mini Mayfair MOT pass rate & common failures
Across 15 model years and 6,283 tests, the Austin Mini Mayfair passes its MOT 77.3% of the time. Against all cars of a similar age (20.4% fail rate), the Mini Mayfair comes out 2.3pp worse. Its most common failure areas are lighting & signalling, emissions & environmental and brakes.
What the MOT record shows
Lighting & signalling dominates the failure mix at 14.2% of all tests — 5.0 points clear of emissions & environmental, so it is the first thing to check.
At component level the recurring items are non catalyst emissions, headlamp aim and service brake performance — non catalyst emissions alone was recorded 604 times.
Condition tracks the odometer closely. Failures run at 20.0% in the 0-30k band and 24.6% in the 90-120k band, a 4.6-point spread.
Advisories point at the next bill rather than this one: suspension was flagged on 24.2% of tests without failing them.
The trend is improving — the fail rate fell from 25.2% in 2021 to 21.2% in 2025, as the worst-kept examples leave the fleet.
How it compares
By model year
Every Mini Mayfair model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 1982 | 91 | 76.9% | 23.1% | Lighting & signalling |
| 1983 | 540 | 79.1% | 20.9% | Lighting & signalling |
| 1984 | 580 | 79.1% | 20.9% | Lighting & signalling |
| 1985 | 1,108 | 77.8% | 22.2% | Lighting & signalling |
| 1986 | 858 | 79.0% | 21.0% | Lighting & signalling |
| 1987 | 863 | 78.2% | 21.8% | Lighting & signalling |
| 1988 | 1,077 | 75.2% | 24.8% | Lighting & signalling |
| 1989 | 1,122 | 75.0% | 25.0% | Lighting & signalling |
| 1990 | 35 | 74.3% | 25.7% | Lighting & signalling |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 14.2% | 891 |
| 2 | Emissions & environmental | 9.2% | 576 |
| 3 | Brakes | 8.8% | 554 |
| 4 | Suspension | 8.6% | 542 |
| 5 | Body, structure & corrosion | 6.2% | 392 |
| 6 | Visibility | 5.8% | 366 |
| 7 | Steering | 3.8% | 239 |
| 8 | Tyres | 1.5% | 95 |
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 | 604 |
| 2 | Headlamp aim | 423 |
| 3 | Service brake performance | 396 |
| 4 | Position lamp | 284 |
| 5 | Headlamp | 264 |
| 6 | Washers | 252 |
| 7 | Rear fog lamp | 227 |
| 8 | Service brake imbalance | 213 |
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 | 24.2% | 1,518 |
| 2 | Emissions & environmental | 14.9% | 937 |
| 3 | Body, structure & corrosion | 12.2% | 764 |
| 4 | Brakes | 10.5% | 662 |
| 5 | Tyres | 8.8% | 551 |
| 6 | Other defects | 7.6% | 480 |
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 | 1,627 | 20.0% |
| 30-60k | 2,132 | 22.8% |
| 60-90k | 2,040 | 24.3% |
| 90-120k | 426 | 24.6% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,472 | 25.2% |
| 2022 | 1,422 | 23.2% |
| 2023 | 1,321 | 22.1% |
| 2024 | 1,095 | 20.8% |
| 2025 | 973 | 21.2% |
What to check before buying a Austin Mini Mayfair
- Lighting & signalling (14.2% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Emissions & environmental (9.2% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
- Brakes (8.8% 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.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
What is the MOT pass rate for the Austin Mini Mayfair?
77.3% of the 6,283 Austin Mini Mayfair MOT tests in this dataset passed, a 22.7% fail rate, across model years 1982–1996.
What does the Austin Mini Mayfair most often fail its MOT on?
Lighting & signalling, recorded in 14.2% of tests, then emissions & environmental (9.2%).
How much does mileage affect Mini Mayfair MOT results?
Fail rates run at 20.0% for cars in the 0-30k band and 24.6% for 90-120k, a 4.6-point difference.
Methodology & source. Based on 6,283 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.