1997 Mazda Bongo — MOT failures & pass rate
2,131 MOT tests on the 1997 Mazda Bongo are in this dataset, and 66.1% of them passed. MPVs of a similar age fail 31.5% of the time, so this is 2.4pp worse than the group it competes with. Failures cluster in suspension, lighting & signalling and body, structure & corrosion.
What the MOT record shows
No single area dominates — suspension (19.9%) and lighting & signalling (19.4%) 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 rear fog lamp — component mounting prescribed areas alone was recorded 533 times.
Mileage is the strongest signal on the record: 13.6% of 30-60k cars fail, rising to 37.1% once past 150k — 2.7× the risk.
Suspension is the most common advisory, noted on 32.9% of tests — work that passed today but is likely due soon.
The trend is worsening — 32.8% of tests failed in 2021 against 35.4% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 19.9% | 424 |
| 2 | Lighting & signalling | 19.4% | 414 |
| 3 | Body, structure & corrosion | 12.9% | 274 |
| 4 | Brakes | 10.6% | 225 |
| 5 | Visibility | 6.8% | 144 |
| 6 | Emissions & environmental | 5.0% | 106 |
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 | 533 |
| 2 | Integral vehicle structure condition | 222 |
| 3 | Rear fog lamp | 159 |
| 4 | Chassis condition | 147 |
| 5 | Headlamp | 132 |
| 6 | Service brake performance | 123 |
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 | 32.9% | 702 |
| 2 | Brakes | 28.8% | 613 |
| 3 | Emissions & environmental | 21.7% | 463 |
| 4 | Tyres | 19.2% | 409 |
| 5 | Body, structure & corrosion | 18.7% | 398 |
| 6 | Lighting & signalling | 15.4% | 329 |
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 | 44 | 13.6% |
| 60-90k | 201 | 30.9% |
| 90-120k | 444 | 32.2% |
| 120-150k | 452 | 31.9% |
| 150k+ | 989 | 37.1% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 1,718 | 35.0% |
| Petrol | 413 | 29.1% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 256 | 32.8% |
| 2022 | 262 | 30.1% |
| 2023 | 249 | 32.5% |
| 2024 | 702 | 34.8% |
| 2025 | 662 | 35.4% |
What to check before buying a 1997 Bongo
The failure pattern for this year is specific enough to inspect against: suspension accounted for 19.9% of tests. Start there.
- Suspension (19.9% 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 (19.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Body, structure & corrosion (12.9% 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 1997 Mazda Bongos pass their MOT?
66.1% of the 2,131 1997 Mazda Bongo MOT tests in this dataset passed — a 33.9% fail rate.
What is the most common MOT failure on a 1997 Mazda Bongo?
Suspension, recorded in 19.9% of tests, followed by lighting & signalling (19.4%).
Does the 1997 Bongo get worse with mileage?
Its MOT fail rate rises from 13.6% in the 30-60k band to 37.1% in the 150k+ band.
Methodology & source. Based on 2,131 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.