2015 Swift Group Ltd Unclassified — MOT failures & pass rate
Across 809 MOT tests analysed for the 2015 Swift Group Ltd Unclassified, the most common recorded failure areas were lighting & signalling, tyres and visibility. Its pass rate of 92.1% was above the average for cars of a similar age (84.3%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 4.9% | 40 |
| 2 | Tyres | 2.5% | 20 |
| 3 | Visibility | 2.2% | 18 |
| 4 | Seat belts & restraints | 1.4% | 11 |
| 5 | Brakes | 1.1% | 9 |
| 6 | Suspension | 1.1% | 9 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 19 |
| 2 | Outline marker lamp | 16 |
| 3 | Headlamp aim | 13 |
| 4 | Tyre pressure monitoring system | 11 |
| 5 | SRS malfunction indicator lamp | 11 |
| 6 | Malfunction indicator lamp | 8 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 8.9% | 72 |
| 2 | Suspension | 2.7% | 22 |
| 3 | Lighting & signalling | 2.2% | 18 |
| 4 | Brakes | 1.6% | 13 |
| 5 | Other defects | 1.5% | 12 |
| 6 | Visibility | 1.4% | 11 |
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 | 620 | 7.4% |
| 30-60k | 176 | 9.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 171 | 8.8% |
| 2022 | 161 | 7.4% |
| 2023 | 164 | 5.5% |
| 2024 | 154 | 9.7% |
| 2025 | 159 | 8.2% |
What to check before buying a 2015 Unclassified
Before buying a 2015 Swift Group Ltd Unclassified, focus on the areas it most often fails on. Lighting & signalling accounted for 4.9% of tests for this year.
- Lighting & signalling (4.9% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (2.5% 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.
- Visibility (2.2% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£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 2015 Swift Group Ltd Unclassifieds pass their MOT?
92.1% of the 809 2015 Swift Group Ltd Unclassified MOT tests in this dataset passed — a 7.9% fail rate.
What is the most common MOT failure on a 2015 Swift Group Ltd Unclassified?
Lighting & signalling, recorded in 4.9% of tests, followed by tyres (2.5%).
Does the 2015 Unclassified get worse with mileage?
Its MOT fail rate rises from 7.4% in the 0-30k band to 9.7% in the 30-60k band.
Methodology & source. Based on 809 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.