2021 Ford Fiesta X Turbo Mhev — MOT failures & pass rate
Across 2,645 MOT tests analysed for the 2021 Ford Fiesta X Turbo Mhev, the most common recorded failure areas were lighting & signalling, tyres and visibility. Its pass rate of 93.8% was above the average for cars of a similar age (91.3%). Higher-mileage examples failed more often — 12.2% in the 60-90k group versus 4.9% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 6.6% | 175 |
| 2 | Tyres | 3.5% | 93 |
| 3 | Visibility | 1.4% | 37 |
| 4 | Brakes | 0.6% | 16 |
| 5 | Suspension | 0.4% | 10 |
| 6 | Emissions & environmental | 0.3% | 9 |
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 | 252 |
| 2 | Tread depth | 43 |
| 3 | Washers | 27 |
| 4 | Wipers | 12 |
| 5 | Catalyst emissions | 9 |
| 6 | Shock absorbers | 9 |
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 | 18.9% | 500 |
| 2 | Other defects | 4.0% | 106 |
| 3 | Brakes | 3.5% | 92 |
| 4 | Road wheels | 1.9% | 51 |
| 5 | Visibility | 1.3% | 34 |
| 6 | Suspension | 1.0% | 26 |
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 | 1,855 | 4.9% |
| 30-60k | 743 | 9.2% |
| 60-90k | 41 | 12.2% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 2,608 | 6.1% |
| Hybrid | 37 | 8.1% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 93 | 4.3% |
| 2024 | 1,290 | 6.5% |
| 2025 | 1,262 | 5.9% |
What to check before buying a 2021 Fiesta X Turbo Mhev
Before buying a 2021 Ford Fiesta X Turbo Mhev, focus on the areas it most often fails on. Lighting & signalling accounted for 6.6% of tests for this year.
- Lighting & signalling (6.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- 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.
- Visibility (1.4% 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 2021 Ford Fiesta X Turbo Mhevs pass their MOT?
93.8% of the 2,645 2021 Ford Fiesta X Turbo Mhev MOT tests in this dataset passed — a 6.2% fail rate.
What is the most common MOT failure on a 2021 Ford Fiesta X Turbo Mhev?
Lighting & signalling, recorded in 6.6% of tests, followed by tyres (3.5%).
Does the 2021 Fiesta X Turbo Mhev get worse with mileage?
Its MOT fail rate rises from 4.9% in the 0-30k band to 12.2% in the 60-90k band.
Methodology & source. Based on 2,645 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.