2022 MG MG4 — MOT failures & pass rate
Across 3,262 MOT tests, the 2022 MG MG4 recorded a 92.8% pass rate. That is effectively the same as all cars of a similar age (8.0% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in tyres, lighting & signalling and visibility.
What the MOT record shows
No single area dominates — tyres (4.9%) and lighting & signalling (3.6%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, tread depth and wipers — headlamp aim alone was recorded 169 times.
Mileage is the strongest signal on the record: 4.9% of 0-30k cars fail, rising to 12.8% once past 60-90k — 2.6× the risk.
Tyres is the most common advisory, noted on 23.9% of tests — work that passed today but is likely due soon.
The trend is worsening — 1.4% of tests failed in 2023 against 7.3% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 4.9% | 160 |
| 2 | Lighting & signalling | 3.6% | 118 |
| 3 | Visibility | 2.2% | 72 |
| 4 | Suspension | 1.1% | 35 |
| 5 | Brakes | 0.3% | 10 |
| 6 | Seat belts & restraints | 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 | 169 |
| 2 | Tread depth | 100 |
| 3 | Wipers | 48 |
| 4 | Washers | 29 |
| 5 | Pins and bushes | 21 |
| 6 | Coil spring | 18 |
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% | 781 |
| 2 | Brakes | 10.5% | 344 |
| 3 | Other defects | 6.3% | 204 |
| 4 | Suspension | 5.2% | 171 |
| 5 | Visibility | 3.0% | 98 |
| 6 | Lighting & signalling | 0.4% | 14 |
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 | 2,033 | 4.9% |
| 30-60k | 1,035 | 10.4% |
| 60-90k | 172 | 12.8% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 71 | 1.4% |
| 2024 | 180 | 7.8% |
| 2025 | 3,007 | 7.3% |
What to check before buying a 2022 MG4
The failure pattern for this year is specific enough to inspect against: tyres accounted for 4.9% of tests. Start there.
- Tyres (4.9% 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 (3.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- 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 2022 MG MG4s pass their MOT?
92.8% of the 3,262 2022 MG MG4 MOT tests in this dataset passed — a 7.2% fail rate.
What is the most common MOT failure on a 2022 MG MG4?
Tyres, recorded in 4.9% of tests, followed by lighting & signalling (3.6%).
Does the 2022 MG4 get worse with mileage?
Its MOT fail rate rises from 4.9% in the 0-30k band to 12.8% in the 60-90k band.
Methodology & source. Based on 3,262 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.