2021 Seat Arona Fr Red Ecotsi — MOT failures & pass rate
Across 2,363 MOT tests analysed for the 2021 Seat Arona Fr Red Ecotsi, the most common recorded failure areas were brakes, tyres and lighting & signalling. Its pass rate of 91.0% was in line with the average for cars of a similar age (91.2%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 4.6% | 109 |
| 2 | Tyres | 3.5% | 82 |
| 3 | Lighting & signalling | 2.0% | 47 |
| 4 | Visibility | 1.8% | 42 |
| 5 | Seat belts & restraints | 0.9% | 20 |
| 6 | Steering | 0.2% | 5 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Brake discs | 65 |
| 2 | Brake pads | 53 |
| 3 | Service brake performance | 46 |
| 4 | Headlamp aim | 44 |
| 5 | Washers | 33 |
| 6 | Tread depth | 21 |
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 | 23.6% | 558 |
| 2 | Tyres | 17.7% | 418 |
| 3 | Other defects | 6.8% | 161 |
| 4 | Visibility | 1.7% | 40 |
| 5 | Suspension | 0.5% | 11 |
| 6 | Steering | 0.4% | 9 |
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 | 1,547 | 8.0% |
| 30-60k | 783 | 11.1% |
| 60-90k | 31 | 6.5% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2024 | 1,171 | 8.6% |
| 2025 | 1,175 | 9.4% |
What to check before buying a 2021 Arona Fr Red Ecotsi
Before buying a 2021 Seat Arona Fr Red Ecotsi, focus on the areas it most often fails on. Brakes accounted for 4.6% of tests for this year.
- Brakes (4.6% 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.
- Tyres (3.5% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
- Lighting & signalling (2.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
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 2021 Seat Arona Fr Red Ecotsis pass their MOT?
91.0% of the 2,363 2021 Seat Arona Fr Red Ecotsi MOT tests in this dataset passed — a 9.0% fail rate.
What is the most common MOT failure on a 2021 Seat Arona Fr Red Ecotsi?
Brakes, recorded in 4.6% of tests, followed by tyres (3.5%).
Does the 2021 Arona Fr Red Ecotsi get worse with mileage?
Its MOT fail rate rises from 8.0% in the 0-30k band to 6.5% in the 60-90k band.
Methodology & source. Based on 2,363 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.