Mg Common MOT Problems (2026)
Every Mg model ranked by MOT fail rate, with the most common issues identified for each. Based on 198,129 real MOT tests.
Average Mg MOT pass rate: 86%
Check Your Mg's MOT History
See the specific issues found on your car, plus health score and running cost estimates.
86%
Avg pass rate
14%
Avg fail rate
38
Models tested
Mg Models with the Most MOT Problems
Highest average fail rates across all tested years
| # | Model | Fail Rate | Common Issues | |
|---|---|---|---|---|
| 1 | Mg 6 Se Gt Turbo | 31% | Suspension wear, Structural corrosion, Exhaust deterioration | |
| 2 | Mg Zt-t | 26% | Suspension wear, Brake disc corrosion, Structural corrosion | |
| 3 | Mg 6 | 25% | Suspension wear, Brake disc corrosion, Structural corrosion | |
| 4 | Mg Mgf | 24% | Suspension wear, Structural corrosion, Exhaust deterioration | |
| 5 | Mg Zt | 24% | DPF/emissions, Injector wear, Suspension wear |
Most Reliable Mg Models
Lowest average fail rates; the Mg models least likely to have MOT problems
| # | Model | Pass Rate | |
|---|---|---|---|
| 1 | Mg 5 Se | 97% | |
| 2 | Mg Hs Exclusive Phev Auto | 96% | |
| 3 | Mg Zs Exclusive T-gdi | 95% | |
| 4 | Mg Hs Exclusive S-a | 94% | |
| 5 | Mg 4 Se | 95% |
All Mg Models by Fail Rate
Every Mg model and year combination, sorted by fail rate (highest first)
| Model | Year | Pass Rate | Fail Rate | |
|---|---|---|---|---|
| Zt-t | 2003 | 66% | 34% | |
| Zt-t | 2006 | 67% | 33% | |
| 6 Se Gt Turbo | 2012 | 63% | 31% | |
| Zt | 2006 | 71% | 29% | |
| Zs | 2001 | 70% | 29% | |
| 6 | 2012 | 71% | 28% | |
| Zs | 2003 | 72% | 28% | |
| 6 | 2011 | 71% | 28% | |
| Mgf | 1996 | 71% | 27% | |
| Mgf | 1998 | 72% | 26% | |
| 6 | 2014 | 73% | 26% | |
| Zs | 2002 | 71% | 26% | |
| 6 | 2013 | 72% | 26% | |
| Zr | 2004 | 74% | 25% | |
| Zr | 2003 | 74% | 25% | |
| Zt | 2003 | 74% | 25% | |
| Mgf | 1995 | 71% | 25% | |
| Zr | 2001 | 75% | 25% | |
| Zt | 2001 | 75% | 25% | |
| Mgf | 1999 | 74% | 24% | |
| Mgf | 1997 | 75% | 24% | |
| Zs | 2004 | 75% | 24% | |
| Tf | 2003 | 77% | 23% | |
| Tf | 2002 | 76% | 23% | |
| Mgf | 2001 | 76% | 23% | |
| Mgf | 2000 | 76% | 23% | |
| 6 | 2015 | 77% | 23% | |
| Zt | 2002 | 77% | 23% | |
| Zr | 2002 | 78% | 22% | |
| Zs | 2005 | 78% | 22% | |
| Zt-t | 2005 | 77% | 22% | |
| Zr | 2006 | 76% | 22% | |
| Tf | 2004 | 78% | 21% | |
| 3 | 2014 | 79% | 21% | |
| Zr | 2005 | 78% | 21% | |
| Zt | 2005 | 78% | 21% | |
| Zt-t | 2004 | 77% | 21% | |
| Tf | 2008 | 79% | 21% | |
| Mgf | 2002 | 79% | 21% | |
| Zs | 2006 | 77% | 21% | |
| 3 | 2015 | 79% | 20% | |
| Tf | 2005 | 79% | 20% | |
| Tf | 2007 | 80% | 20% | |
| 3 | 2017 | 80% | 19% | |
| 6 | 2016 | 81% | 19% | |
| Tf | 2006 | 80% | 19% | |
| Zt-t | 2002 | 81% | 19% | |
| 3 | 2016 | 82% | 18% | |
| Zt | 2004 | 81% | 18% | |
| Zs Excite T-gdi Auto | 2020 | 82% | 18% |
Showing top 50 of 141 model/year combinations. View all Mg models
Mg MOT FAQ
What are the most common MOT problems on Mg cars?
The most common MOT problems on Mg cars vary by model and age, but typically include lighting defects, suspension wear, brake component deterioration, and tyre condition issues. Older Mg diesels are more prone to exhaust and emissions failures. The 6 Se Gt Turbo has the highest average fail rate at 31%.
Which Mg model is the most reliable?
The most reliable Mg model in our data is the 5 Se with an average MOT pass rate of 97%. View all Mg models for full reliability data.
What is the average MOT pass rate for Mg?
The average MOT pass rate for Mg is 86%, based on 198,129 MOT tests across 38 models. This means about 14% of Mg cars fail their MOT on the first attempt.
Check a Specific Mg
Enter any reg plate to see the individual MOT history, defects found, health score, and running cost estimate for that specific car.