1998 SEAT Arosa — MOT failures & pass rate
Across 773 MOT tests, the 1998 SEAT Arosa recorded a 72.8% pass rate. Against all cars of a similar age (25.7% fail rate), the 1998 Arosa comes out 1.4pp worse. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 13.7% of tests against 10.5% for the next-worst category.
At component level the recurring items are catalyst emissions, service brake performance and stop lamp — catalyst emissions alone was recorded 66 times.
Mileage is the strongest signal on the record: 10.2% of 0-30k cars fail, rising to 46.7% once past 150k — 4.6× the risk.
Suspension is the most common advisory, noted on 39.7% of tests — work that passed today but is likely due soon.
The trend is worsening — 27.1% of tests failed in 2021 against 28.9% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 13.7% | 106 |
| 2 | Brakes | 10.5% | 81 |
| 3 | Suspension | 9.7% | 75 |
| 4 | Emissions & environmental | 8.4% | 65 |
| 5 | Body, structure & corrosion | 6.6% | 51 |
| 6 | Tyres | 5.3% | 41 |
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 | 66 |
| 2 | Service brake performance | 42 |
| 3 | Stop lamp | 41 |
| 4 | Wipers | 40 |
| 5 | Wheel bearings | 36 |
| 6 | Headlamp aim | 29 |
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 | 39.7% | 307 |
| 2 | Brakes | 32.1% | 248 |
| 3 | Tyres | 23.7% | 183 |
| 4 | Emissions & environmental | 23.2% | 179 |
| 5 | Other defects | 18.2% | 141 |
| 6 | Body, structure & corrosion | 14.1% | 109 |
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 | 49 | 10.2% |
| 30-60k | 273 | 23.8% |
| 60-90k | 265 | 29.8% |
| 90-120k | 110 | 30.0% |
| 120-150k | 46 | 30.4% |
| 150k+ | 30 | 46.7% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 710 | 26.6% |
| Diesel | 63 | 33.3% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 229 | 27.1% |
| 2022 | 191 | 28.8% |
| 2023 | 149 | 26.9% |
| 2024 | 107 | 23.4% |
| 2025 | 97 | 28.9% |
What to check before buying a 1998 Arosa
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 13.7% of tests. Start there.
- Lighting & signalling (13.7% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (10.5% 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 (9.7% 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 SEAT Arosas pass their MOT?
72.8% of the 773 1998 SEAT Arosa MOT tests in this dataset passed — a 27.2% fail rate.
What is the most common MOT failure on a 1998 SEAT Arosa?
Lighting & signalling, recorded in 13.7% of tests, followed by brakes (10.5%).
Does the 1998 Arosa get worse with mileage?
Its MOT fail rate rises from 10.2% in the 0-30k band to 46.7% in the 150k+ band.
Methodology & source. Based on 773 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.