1998 Vauxhall Vectra — MOT failures & pass rate
Across 1,426 MOT tests, the 1998 Vauxhall Vectra recorded a 75.5% pass rate. Large family cars of a similar age fail 27.3% of the time, so this is 2.8pp better than the group it competes with. Failures cluster in lighting & signalling, suspension and emissions & environmental.
What the MOT record shows
No single area dominates — lighting & signalling (12.8%) and suspension (10.3%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are catalyst emissions, headlamp aim and rigid brake pipes — catalyst emissions alone was recorded 173 times.
Mileage matters less than usual here: the 1998 Vectra fails 26.7% of the time in the 0-30k band and 27.9% at 150k+, a spread of only 1.3 points.
Advisories point at the next bill rather than this one: brakes was flagged on 34.8% of tests without failing them.
The trend is improving — the fail rate fell from 25.5% in 2021 to 21.8% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 12.8% | 182 |
| 2 | Suspension | 10.3% | 147 |
| 3 | Emissions & environmental | 8.8% | 126 |
| 4 | Brakes | 8.1% | 116 |
| 5 | Body, structure & corrosion | 6.4% | 91 |
| 6 | Visibility | 4.8% | 68 |
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 | 173 |
| 2 | Headlamp aim | 90 |
| 3 | Rigid brake pipes | 77 |
| 4 | Prescribed areas | 60 |
| 5 | Component mounting prescribed areas | 54 |
| 6 | Washers | 45 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 34.8% | 496 |
| 2 | Suspension | 29.6% | 422 |
| 3 | Emissions & environmental | 19.4% | 277 |
| 4 | Tyres | 19.4% | 277 |
| 5 | Body, structure & corrosion | 18.3% | 261 |
| 6 | Other defects | 12.4% | 177 |
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 | 30 | 26.7% |
| 30-60k | 231 | 16.9% |
| 60-90k | 358 | 20.4% |
| 90-120k | 386 | 28.0% |
| 120-150k | 247 | 29.5% |
| 150k+ | 136 | 27.9% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 1,358 | 24.7% |
| Diesel | 68 | 22.1% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 416 | 25.5% |
| 2022 | 357 | 25.5% |
| 2023 | 261 | 22.2% |
| 2024 | 213 | 26.3% |
| 2025 | 179 | 21.8% |
What to check before buying a 1998 Vectra
On a 1998 Vectra, lighting & signalling is what the MOT record says goes wrong most — it appeared in 12.8% of tests. Check these areas before you commit.
- Lighting & signalling (12.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (10.3% 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 (8.8% 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 1998 Vauxhall Vectras pass their MOT?
75.5% of the 1,426 1998 Vauxhall Vectra MOT tests in this dataset passed — a 24.5% fail rate.
What is the most common MOT failure on a 1998 Vauxhall Vectra?
Lighting & signalling, recorded in 12.8% of tests, followed by suspension (10.3%).
Does the 1998 Vectra get worse with mileage?
Its MOT fail rate rises from 26.7% in the 0-30k band to 27.9% in the 150k+ band.
Methodology & source. Based on 1,426 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.