1997 Volvo 800 Series — MOT failures & pass rate
The 1997 Volvo 800 Series passed 70.1% of its 1,136 recorded MOT tests. Against all cars of a similar age (25.1% fail rate), the 1997 800 Series comes out 4.8pp worse. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
No single area dominates — lighting & signalling (16.7%) and brakes (15.8%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are catalyst emissions, rbt (sp) and anti-lock braking system — catalyst emissions alone was recorded 72 times.
Condition tracks the odometer closely. Failures run at 37.5% in the 30-60k band and 32.1% in the 150k+ band, a 5.4-point spread.
Suspension is the most common advisory, noted on 28.7% of tests — work that passed today but is likely due soon.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 16.7% | 190 |
| 2 | Brakes | 15.8% | 180 |
| 3 | Suspension | 11.4% | 130 |
| 4 | Body, structure & corrosion | 9.1% | 103 |
| 5 | Emissions & environmental | 7.1% | 81 |
| 6 | Visibility | 5.7% | 65 |
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 | 72 |
| 2 | Rbt (sp) | 72 |
| 3 | Anti-lock braking system | 66 |
| 4 | Position lamp | 63 |
| 5 | Headlamp aim | 61 |
| 6 | Ball joint | 60 |
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 | 28.7% | 326 |
| 2 | Tyres | 26.9% | 305 |
| 3 | Brakes | 23.9% | 272 |
| 4 | Emissions & environmental | 22.4% | 254 |
| 5 | Body, structure & corrosion | 20.5% | 233 |
| 6 | Other defects | 17.2% | 195 |
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 | 32 | 37.5% |
| 60-90k | 65 | 24.6% |
| 90-120k | 195 | 29.7% |
| 120-150k | 235 | 25.1% |
| 150k+ | 586 | 32.1% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 1,046 | 29.6% |
| Diesel | 90 | 33.3% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 327 | 30.6% |
| 2022 | 229 | 28.8% |
| 2023 | 206 | 28.6% |
| 2024 | 206 | 30.1% |
| 2025 | 168 | 31.6% |
What to check before buying a 1997 800 Series
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 16.7% of tests. Start there.
- Lighting & signalling (16.7% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (15.8% 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 (11.4% 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 1997 Volvo 800 Seriess pass their MOT?
70.1% of the 1,136 1997 Volvo 800 Series MOT tests in this dataset passed — a 29.9% fail rate.
What is the most common MOT failure on a 1997 Volvo 800 Series?
Lighting & signalling, recorded in 16.7% of tests, followed by brakes (15.8%).
Does the 1997 800 Series get worse with mileage?
Its MOT fail rate rises from 37.5% in the 30-60k band to 32.1% in the 150k+ band.
Methodology & source. Based on 1,136 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.