2005 SEAT Arosa — MOT failures & pass rate
The 2005 SEAT Arosa passed 72.9% of its 388 recorded MOT tests. That is effectively the same as all cars of a similar age (27.6% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in lighting & signalling, body, structure & corrosion and suspension.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 14.7% of tests against 9.8% for the next-worst category.
At component level the recurring items are headlamp aim, catalyst emissions and wipers — headlamp aim alone was recorded 29 times.
Condition tracks the odometer closely. Failures run at 16.0% in the 0-30k band and 37.8% in the 90-120k band, a 21.8-point spread — more than double.
Suspension is the most common advisory, noted on 33.8% of tests — work that passed today but is likely due soon.
The trend is worsening — 25.3% of tests failed in 2021 against 29.0% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 14.7% | 57 |
| 2 | Body, structure & corrosion | 9.8% | 38 |
| 3 | Suspension | 9.5% | 37 |
| 4 | Brakes | 8.5% | 33 |
| 5 | Emissions & environmental | 8.3% | 32 |
| 6 | Visibility | 5.4% | 21 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp aim | 29 |
| 2 | Catalyst emissions | 24 |
| 3 | Wipers | 22 |
| 4 | Position lamp | 21 |
| 5 | Exhaust system | 21 |
| 6 | Stop lamp | 19 |
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 | 33.8% | 131 |
| 2 | Brakes | 30.1% | 117 |
| 3 | Tyres | 28.3% | 110 |
| 4 | Emissions & environmental | 20.1% | 78 |
| 5 | Body, structure & corrosion | 18.3% | 71 |
| 6 | Lighting & signalling | 13.7% | 53 |
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 | 50 | 16.0% |
| 30-60k | 121 | 19.8% |
| 60-90k | 138 | 32.6% |
| 90-120k | 74 | 37.8% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 87 | 25.3% |
| 2022 | 83 | 28.9% |
| 2023 | 76 | 26.3% |
| 2024 | 73 | 26.0% |
| 2025 | 69 | 29.0% |
What to check before buying a 2005 Arosa
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 14.7% of tests. Start there.
- Lighting & signalling (14.7% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Body, structure & corrosion (9.8% 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+.
- Suspension (9.5% 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 2005 SEAT Arosas pass their MOT?
72.9% of the 388 2005 SEAT Arosa MOT tests in this dataset passed — a 27.1% fail rate.
What is the most common MOT failure on a 2005 SEAT Arosa?
Lighting & signalling, recorded in 14.7% of tests, followed by body, structure & corrosion (9.8%).
Does the 2005 Arosa get worse with mileage?
Its MOT fail rate rises from 16.0% in the 0-30k band to 37.8% in the 90-120k band.
Methodology & source. Based on 388 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.