2020 Ford Fiesta St-Line X Ed Turbo Auto — MOT failures & pass rate
Across 595 MOT tests analysed for the 2020 Ford Fiesta St-Line X Ed Turbo Auto, the most common recorded failure areas were lighting & signalling, tyres and visibility. Its pass rate of 92.9% was above the average for cars of a similar age (90.6%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 5.0% | 30 |
| 2 | Tyres | 3.7% | 22 |
| 3 | Visibility | 2.5% | 15 |
| 4 | Brakes | 1.0% | 6 |
| 5 | Emissions & environmental | 0.7% | 4 |
| 6 | Seat belts & restraints | 0.2% | 1 |
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 | 41 |
| 2 | Washers | 10 |
| 3 | Brake pads | 7 |
| 4 | Wipers | 5 |
| 5 | Tread depth | 5 |
| 6 | Catalyst emissions | 4 |
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 | 22.2% | 132 |
| 2 | Brakes | 7.9% | 47 |
| 3 | Road wheels | 6.2% | 37 |
| 4 | Other defects | 5.0% | 30 |
| 5 | Body, structure & corrosion | 1.0% | 6 |
| 6 | Suspension | 0.8% | 5 |
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 | 459 | 5.9% |
| 30-60k | 124 | 11.3% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 198 | 7.6% |
| 2024 | 192 | 6.8% |
| 2025 | 199 | 6.5% |
What to check before buying a 2020 Fiesta St-Line X Ed Turbo Auto
Before buying a 2020 Ford Fiesta St-Line X Ed Turbo Auto, focus on the areas it most often fails on. Lighting & signalling accounted for 5.0% of tests for this year.
- Lighting & signalling (5.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (3.7% 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 (2.5% 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 2020 Ford Fiesta St-Line X Ed Turbo Autos pass their MOT?
92.9% of the 595 2020 Ford Fiesta St-Line X Ed Turbo Auto MOT tests in this dataset passed — a 7.1% fail rate.
What is the most common MOT failure on a 2020 Ford Fiesta St-Line X Ed Turbo Auto?
Lighting & signalling, recorded in 5.0% of tests, followed by tyres (3.7%).
Does the 2020 Fiesta St-Line X Ed Turbo Auto get worse with mileage?
Its MOT fail rate rises from 5.9% in the 0-30k band to 11.3% in the 30-60k band.
Methodology & source. Based on 595 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.