1999 Rover Mini — MOT failures & pass rate
The 1999 Rover Mini passed 77.6% of its 4,578 recorded MOT tests. That is 4.8 percentage points better than city cars of a similar age, which fail at 27.2%. Failures cluster in lighting & signalling, suspension and emissions & environmental.
What the MOT record shows
No single area dominates — lighting & signalling (10.0%) and suspension (8.0%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are catalyst emissions, steering rack and headlamp aim — catalyst emissions alone was recorded 511 times.
Mileage is the strongest signal on the record: 17.6% of 0-30k cars fail, rising to 28.5% once past 90-120k.
Advisories point at the next bill rather than this one: suspension was flagged on 24.1% of tests without failing them.
The trend is improving — the fail rate fell from 25.6% in 2021 to 19.3% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 10.0% | 458 |
| 2 | Suspension | 8.0% | 365 |
| 3 | Emissions & environmental | 8.0% | 365 |
| 4 | Brakes | 6.7% | 306 |
| 5 | Visibility | 5.5% | 253 |
| 6 | Body, structure & corrosion | 5.2% | 236 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Catalyst emissions | 511 |
| 2 | Steering rack | 280 |
| 3 | Headlamp aim | 240 |
| 4 | Washers | 207 |
| 5 | Service brake performance | 172 |
| 6 | Service brake imbalance | 155 |
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 | 24.1% | 1,104 |
| 2 | Emissions & environmental | 11.2% | 513 |
| 3 | Body, structure & corrosion | 9.0% | 413 |
| 4 | Tyres | 8.8% | 404 |
| 5 | Brakes | 8.7% | 399 |
| 6 | Other defects | 5.4% | 249 |
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 | 1,022 | 17.6% |
| 30-60k | 1,927 | 21.9% |
| 60-90k | 1,402 | 25.5% |
| 90-120k | 221 | 28.5% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 942 | 25.6% |
| 2022 | 938 | 22.3% |
| 2023 | 937 | 22.9% |
| 2024 | 884 | 21.5% |
| 2025 | 877 | 19.3% |
What to check before buying a 1999 Mini
On a 1999 Mini, lighting & signalling is what the MOT record says goes wrong most — it appeared in 10.0% of tests. Check these areas before you commit.
- Lighting & signalling (10.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- 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.
- Emissions & environmental (8.0% 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 1999 Rover Minis pass their MOT?
77.6% of the 4,578 1999 Rover Mini MOT tests in this dataset passed — a 22.4% fail rate.
What is the most common MOT failure on a 1999 Rover Mini?
Lighting & signalling, recorded in 10.0% of tests, followed by suspension (8.0%).
Does the 1999 Mini get worse with mileage?
Its MOT fail rate rises from 17.6% in the 0-30k band to 28.5% in the 90-120k band.
Methodology & source. Based on 4,578 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.