1998 Volvo 900 Series — MOT failures & pass rate
Across 1,718 MOT tests analysed for the 1998 Volvo 900 Series, the most common recorded failure areas were lighting & signalling, brakes and suspension. Its pass rate of 75.7% was in line with the average for cars of a similar age (76.1%). Higher-mileage examples failed more often — 27.0% in the 150k+ group versus 18.9% in the 60-90k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 13.6% | 234 |
| 2 | Brakes | 10.2% | 176 |
| 3 | Suspension | 8.0% | 138 |
| 4 | Emissions & environmental | 7.3% | 126 |
| 5 | Body, structure & corrosion | 7.0% | 120 |
| 6 | Visibility | 4.8% | 82 |
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 | 98 |
| 2 | Exhaust system | 92 |
| 3 | Position lamp | 92 |
| 4 | Component mounting prescribed areas | 86 |
| 5 | Service brake performance | 66 |
| 6 | Wipers | 62 |
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 | 29.2% | 501 |
| 2 | Brakes | 27.8% | 477 |
| 3 | Tyres | 24.9% | 427 |
| 4 | Emissions & environmental | 24.4% | 419 |
| 5 | Body, structure & corrosion | 18.4% | 316 |
| 6 | Lighting & signalling | 16.0% | 274 |
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 | 164 | 18.9% |
| 90-120k | 219 | 21.9% |
| 120-150k | 413 | 22.8% |
| 150k+ | 894 | 27.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 424 | 24.5% |
| 2022 | 337 | 22.3% |
| 2023 | 357 | 27.5% |
| 2024 | 311 | 26.4% |
| 2025 | 289 | 20.1% |
What to check before buying a 1998 900 Series
Before buying a 1998 Volvo 900 Series, focus on the areas it most often fails on. Lighting & signalling accounted for 13.6% of tests for this year.
- Lighting & signalling (13.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (10.2% 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.
- 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.
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 Volvo 900 Seriess pass their MOT?
75.7% of the 1,718 1998 Volvo 900 Series MOT tests in this dataset passed — a 24.3% fail rate.
What is the most common MOT failure on a 1998 Volvo 900 Series?
Lighting & signalling, recorded in 13.6% of tests, followed by brakes (10.2%).
Does the 1998 900 Series get worse with mileage?
Its MOT fail rate rises from 18.9% in the 60-90k band to 27.0% in the 150k+ band.
Methodology & source. Based on 1,718 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.