2021 Mg 3 Exclusive Vti- — MOT failures & pass rate
Across 2,608 MOT tests analysed for the 2021 Mg 3 Exclusive Vti-, the most common recorded failure areas were lighting & signalling, tyres and visibility. Its pass rate of 91.0% was in line with the average for cars of a similar age (91.2%). Higher-mileage examples failed more often — 18.2% in the 60-90k group versus 7.8% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 6.8% | 176 |
| 2 | Tyres | 4.8% | 124 |
| 3 | Visibility | 2.1% | 56 |
| 4 | Brakes | 1.8% | 48 |
| 5 | Suspension | 0.8% | 20 |
| 6 | Body, structure & corrosion | 0.3% | 7 |
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 | 185 |
| 2 | Wipers | 36 |
| 3 | Headlamp | 35 |
| 4 | Washers | 27 |
| 5 | Stop lamp | 26 |
| 6 | Tread depth | 24 |
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 | 22.9% | 596 |
| 2 | Brakes | 11.2% | 292 |
| 3 | Other defects | 5.9% | 155 |
| 4 | Visibility | 2.1% | 56 |
| 5 | Suspension | 1.2% | 32 |
| 6 | Lighting & signalling | 0.8% | 21 |
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 | 2,002 | 7.8% |
| 30-60k | 566 | 12.7% |
| 60-90k | 33 | 18.2% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 35 | 5.7% |
| 2024 | 1,271 | 8.8% |
| 2025 | 1,302 | 9.4% |
What to check before buying a 2021 3 Exclusive Vti-
Before buying a 2021 Mg 3 Exclusive Vti-, focus on the areas it most often fails on. Lighting & signalling accounted for 6.8% of tests for this year.
- Lighting & signalling (6.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (4.8% 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.
- Visibility (2.1% 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 Mg 3 Exclusive Vti-s pass their MOT?
91.0% of the 2,608 2021 Mg 3 Exclusive Vti- MOT tests in this dataset passed — a 9.0% fail rate.
What is the most common MOT failure on a 2021 Mg 3 Exclusive Vti-?
Lighting & signalling, recorded in 6.8% of tests, followed by tyres (4.8%).
Does the 2021 3 Exclusive Vti- get worse with mileage?
Its MOT fail rate rises from 7.8% in the 0-30k band to 18.2% in the 60-90k band.
Methodology & source. Based on 2,608 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.