MG MOT Failure Rates
MOT failure rates for 20 MG models, ranked from highest to lowest failure rate. The checked-in dataset contains 148,509,908 recorded DVSA MOT tests.
MG Recorded MOT Overview
Across 20 included model groups, MG has a sample-size-weighted historical MOT failure rate of 22.3% from 349,688 tests. That is below the dataset-wide reference of 26.9%. This describes the included groups and does not predict an individual vehicle's result.
The lowest recorded failure rate among the included MG model groups belongs to the MG 4 with a 6.1% failure rate. The highest failure rate belongs to the MG Zt-T at 41.6%.
These figures are calculated from real DVSA MOT test records and represent weighted averages across all vehicle ages and mileage bands. Only model groups with 100 or more test records are included; the sample size is shown for context.
Which MG Models Fail MOT Most?
| Model | Failure Rate | Total Tests |
|---|---|---|
| MG Zt-T | 41.6% | 4,199 |
| MG ZR | 37.8% | 10,816 |
| MG 6 | 37.1% | 9,367 |
| MG ZT | 37.0% | 7,397 |
| MG MGF | 35.2% | 29,288 |
| MG TF | 31.2% | 42,853 |
| MG Maestro | 26.0% | 258 |
| MG Midget | 22.4% | 5,220 |
| MG 3 | 21.5% | 72,418 |
| MG Metro | 21.4% | 571 |
| MG GS | 19.3% | 11,771 |
| MG MGB | 19.0% | 1,896 |
| MG Magnette | 19.0% | 274 |
| MG ZS | 16.1% | 112,017 |
| MG MGC | 15.0% | 213 |
| MG 5 | 13.8% | 13,510 |
| MG Rv8 | 12.3% | 2,648 |
| MG MGA | 12.0% | 325 |
| MG HS | 9.2% | 23,459 |
| MG 4 | 6.1% | 1,188 |
How we calculate failure rates: Rates are weighted averages across all mileage bands for each model group. Only groups with 100+ test records are shown. The checked-in data contains 148,509,908 tests and 39,969,903 failures.
MG MOT FAQs
What is the recorded MG MOT failure rate?
The sample-size-weighted rate across the 20 included MG model groups is 22.3%, based on 349,688 tests. Individual group rates and sample sizes appear above. These historical group outcomes are not an assessment of a specific car.
Which included MG model group has the lowest rate?
The MG 4 has the lowest MOT failure rate at 6.1% among the groups shown. This is a historical population comparison, not a recommendation. See full MG 4 MOT data.
Which MG model fails MOT most?
The MG Zt-T has the highest failure rate at 41.6% among the groups shown. The rate does not describe the condition of a particular car. See full MG Zt-T MOT data.
How can I assess a MG before its MOT?
AutoSafe offers a free MOT-history and comparison report. Enter your registration number and postcode to see the recorded history, mileage source and closest available comparison group.
Check Your MG
Enter your reg to see recorded MOT history and comparable-vehicle failure rates for your MG.
Related Guides
- Top 10 MOT Failure Points
- Pre-MOT Checklist
- MOT Failure Rates by Car
- How to Check MOT History
- Will My Car Pass Its MOT?
Other Makes
Check Your MG
Enter your reg to see recorded MOT history and comparable-vehicle failure rates for your MG.
Compare Your Vehicle Free