2021 Ford Mustang Mach-E Std Range — MOT failures & pass rate
Across 2,049 MOT tests analysed for the 2021 Ford Mustang Mach-E Std Range, the most common recorded failure areas were tyres, lighting & signalling and visibility. Its pass rate of 92.9% was above the average for cars of a similar age (91.2%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 5.8% | 118 |
| 2 | Lighting & signalling | 1.8% | 37 |
| 3 | Visibility | 1.0% | 21 |
| 4 | Brakes | 0.4% | 9 |
| 5 | Seat belts & restraints | 0.3% | 6 |
| 6 | Other defects | 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 | Tread depth | 117 |
| 2 | Headlamp aim | 40 |
| 3 | Wipers | 13 |
| 4 | Washers | 11 |
| 5 | Registration plates | 9 |
| 6 | Tyre pressure monitoring system | 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 | 23.9% | 490 |
| 2 | Other defects | 6.2% | 126 |
| 3 | Brakes | 5.9% | 122 |
| 4 | Visibility | 2.2% | 46 |
| 5 | Suspension | 1.2% | 25 |
| 6 | Seat belts & restraints | 0.3% | 6 |
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 | 730 | 5.8% |
| 30-60k | 1,070 | 7.4% |
| 60-90k | 231 | 10.4% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2024 | 1,006 | 7.4% |
| 2025 | 1,037 | 6.9% |
What to check before buying a 2021 Mustang Mach-E Std Range
Before buying a 2021 Ford Mustang Mach-E Std Range, focus on the areas it most often fails on. Tyres accounted for 5.8% of tests for this year.
- Tyres (5.8% 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 (1.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Visibility (1.0% 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 Mustang Mach-E Std Ranges pass their MOT?
92.9% of the 2,049 2021 Ford Mustang Mach-E Std Range MOT tests in this dataset passed — a 7.1% fail rate.
What is the most common MOT failure on a 2021 Ford Mustang Mach-E Std Range?
Tyres, recorded in 5.8% of tests, followed by lighting & signalling (1.8%).
Does the 2021 Mustang Mach-E Std Range get worse with mileage?
Its MOT fail rate rises from 5.8% in the 0-30k band to 10.4% in the 60-90k band.
Methodology & source. Based on 2,049 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.