1991 Toyota Corolla — MOT failures & pass rate
Across 459 MOT tests, the 1991 Toyota Corolla recorded an 81.0% pass rate. Against small family cars of a similar age (20.3% fail rate), the 1991 Corolla comes out 1.4pp better. Failures cluster in lighting & signalling, body, structure & corrosion and brakes.
What the MOT record shows
No single area dominates — lighting & signalling (10.5%) and body, structure & corrosion (7.6%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are component mounting prescribed areas, steering rack and headlamp aim — component mounting prescribed areas alone was recorded 34 times.
Condition tracks the odometer closely. Failures run at 15.2% in the 30-60k band and 25.0% in the 120-150k band, a 9.8-point spread.
Suspension is the most common advisory, noted on 23.5% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 20.3% in 2021 to 17.6% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 10.5% | 48 |
| 2 | Body, structure & corrosion | 7.6% | 35 |
| 3 | Brakes | 7.0% | 32 |
| 4 | Suspension | 5.9% | 27 |
| 5 | Visibility | 5.7% | 26 |
| 6 | Steering | 4.8% | 22 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Component mounting prescribed areas | 34 |
| 2 | Steering rack | 23 |
| 3 | Headlamp aim | 21 |
| 4 | Wipers | 19 |
| 5 | Tread depth | 16 |
| 6 | Service brake performance | 13 |
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 | 23.5% | 108 |
| 2 | Body, structure & corrosion | 20.0% | 92 |
| 3 | Brakes | 20.0% | 92 |
| 4 | Tyres | 18.9% | 87 |
| 5 | Emissions & environmental | 16.6% | 76 |
| 6 | Other defects | 11.8% | 54 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 30-60k | 105 | 15.2% |
| 60-90k | 134 | 23.1% |
| 90-120k | 136 | 18.4% |
| 120-150k | 40 | 25.0% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 128 | 20.3% |
| 2022 | 100 | 22.0% |
| 2023 | 96 | 16.7% |
| 2024 | 67 | 16.4% |
| 2025 | 68 | 17.6% |
What to check before buying a 1991 Corolla
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 10.5% of tests. Start there.
- Lighting & signalling (10.5% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Body, structure & corrosion (7.6% 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+.
- Brakes (7.0% 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.
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 1991 Toyota Corollas pass their MOT?
81.0% of the 459 1991 Toyota Corolla MOT tests in this dataset passed — a 18.9% fail rate.
What is the most common MOT failure on a 1991 Toyota Corolla?
Lighting & signalling, recorded in 10.5% of tests, followed by body, structure & corrosion (7.6%).
Does the 1991 Corolla get worse with mileage?
Its MOT fail rate rises from 15.2% in the 30-60k band to 25.0% in the 120-150k band.
Methodology & source. Based on 459 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.