1999 Toyota Hi=Ace — MOT failures & pass rate
The 1999 Toyota Hi=Ace passed 74.9% of its 2,303 recorded MOT tests. Against all cars of a similar age (26.2% fail rate), the 1999 Hi=Ace comes out 1.1pp better. Failures cluster in suspension, lighting & signalling and body, structure & corrosion.
What the MOT record shows
No single area dominates — suspension (15.2%) and lighting & signalling (13.0%) 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, integral vehicle structure condition and wipers — component mounting prescribed areas alone was recorded 389 times.
Mileage is the strongest signal on the record: 15.5% of 60-90k cars fail, rising to 28.0% once past 150k.
Advisories point at the next bill rather than this one: suspension was flagged on 50.3% of tests without failing them.
The trend is improving — the fail rate fell from 26.6% in 2021 to 24.6% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 15.2% | 351 |
| 2 | Lighting & signalling | 13.0% | 299 |
| 3 | Body, structure & corrosion | 8.6% | 198 |
| 4 | Brakes | 8.0% | 183 |
| 5 | Visibility | 7.0% | 162 |
| 6 | Tyres | 3.6% | 83 |
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 | 389 |
| 2 | Integral vehicle structure condition | 187 |
| 3 | Wipers | 148 |
| 4 | Stop lamp | 130 |
| 5 | Chassis condition | 128 |
| 6 | Position lamp | 125 |
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 | 50.3% | 1,159 |
| 2 | Brakes | 31.3% | 720 |
| 3 | Body, structure & corrosion | 23.8% | 549 |
| 4 | Tyres | 22.1% | 510 |
| 5 | Emissions & environmental | 16.4% | 378 |
| 6 | Other defects | 14.3% | 330 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 60-90k | 245 | 15.5% |
| 90-120k | 496 | 21.4% |
| 120-150k | 487 | 28.1% |
| 150k+ | 1,039 | 28.0% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 2,106 | 25.4% |
| Petrol | 191 | 21.5% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 606 | 26.6% |
| 2022 | 520 | 23.8% |
| 2023 | 452 | 24.8% |
| 2024 | 391 | 25.3% |
| 2025 | 334 | 24.6% |
What to check before buying a 1999 Hi=Ace
On a 1999 Hi=Ace, suspension is what the MOT record says goes wrong most — it appeared in 15.2% of tests. Check these areas before you commit.
- Suspension (15.2% 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.
- Lighting & signalling (13.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Body, structure & corrosion (8.6% 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+.
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 Toyota Hi=Aces pass their MOT?
74.9% of the 2,303 1999 Toyota Hi=Ace MOT tests in this dataset passed — a 25.1% fail rate.
What is the most common MOT failure on a 1999 Toyota Hi=Ace?
Suspension, recorded in 15.2% of tests, followed by lighting & signalling (13.0%).
Does the 1999 Hi=Ace get worse with mileage?
Its MOT fail rate rises from 15.5% in the 60-90k band to 28.0% in the 150k+ band.
Methodology & source. Based on 2,303 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.