88.9%
MG4
MG4 MOT pass rate and common problems
The MG4 passed 88.9% of its initial MOT tests in 2025, 16.6 percentage points above the 72.3% UK average. The item testers recorded most often was headlamp aim too low.
Checking a specific car? Its own results, advisories and recorded mileages are in a free MOT history check.
How the MG4 compares
Initial MOT tests in 2025, retests excluded. A car that failed and was repaired at the test station counts as a fail.
80.9%
MG average
72.3%
UK average, all cars
The MG4 runs 8 points ahead of the MG average. It is 1st of the 12 MG models in the data. The average MG4 arrived at its test 2.6 years old with 30,107 miles recorded.
A pass rate records whether cars met the roadworthiness standard on test day. It is not a reliability score, and part of any gap reflects how old the tested cars were.
MG4 MOT pass rate by age
The same 2025 tests split by the car's age at test.
| Age at test | Tests | Pass rate | vs UK average |
|---|---|---|---|
| 3 to 5 years | 350 | 83.4% | 11.1 pts above |
Every MG4 tested in 2025 was aged 3 to 5 years, so there is no other age group to compare with. The UK average of 72.3% covers cars of every age, so compare like with like.
Where MG4 failures cluster
Every failure item recorded on MG4 cars in 2025, grouped into the DVSA's test areas.
Tyres and lamps, reflectors and electrical equipment together account for 71.9% of recorded failure items. These are recorded failures across the model, not faults every car has.
The 10 most common MG4 MOT failures
Specific items recorded on MG4 cars that failed their 2025 MOT, as a share of all recorded failure items.
Together these 10 items make up 84.9% of everything testers recorded against failed MG4 cars. The rest is spread across many smaller items, and one failed test often records several at once.
What to look at on a MG4
The recorded failures above, grouped by area, biggest first.
1
Tyres
Recorded most often: tread depth below requirements of 1.6mm, condition has a cut in excess of the requirements deep enough to reach the ply or cords and condition has ply or cords exposed. 39.4% of failure items.
2
Lamps, reflectors and electrical equipment
Recorded most often: headlamp aim too low and headlamp aim too high. 24% of failure items.
3
Visibility
Recorded most often: wipers does not clear the windscreen effectively, washers provides insufficient washer liquid and washers not working. 15.4% of failure items.
4
Suspension
Recorded most often: pins and bushes pin or bush excessively worn and coil spring fractured or broken. 6.2% of failure items.
The car's own MOT history matters more than any model average. A free MOT history check shows whether a specific MG4 has failed on these items before, or had them noted as advisories. Buying one? See the used MG4 buying guide.
Already found one?
Check its finance, write-off, theft, mileage and keeper history with a £15 vehicle history report.
MG4 MOT FAQs
What is the MG4 MOT pass rate?
88.9% of MG4 cars passed their initial MOT first time in 2025, from 4,402 tests. That is 16.6 percentage points above the 72.3% average for all cars, and ranks 54th of 575 models.
What does a MG4 most commonly fail its MOT on?
The item testers recorded most often on MG4 cars failing their 2025 MOT was headlamp aim too low, on 18.9% of failure items. Next were tread depth below requirements of 1.6mm (16.7%) and condition has a cut in excess of the requirements deep enough to reach the ply or cords (15.6%).
Which area causes the most MG4 MOT failures?
Across every recorded failure item, the largest area was tyres at 43.2%, followed by lamps, reflectors and electrical equipment at 28.7%.
Does this mean every MG4 has these problems?
No. These are the items testers recorded across every MG4 that failed in 2025. They show where the model most often needs attention, not the condition of any individual car.
How do I see a specific MG4's MOT history?
Enter its registration on the free Carpeep MOT history check to see that car's own test results, failures, advisories and recorded mileages.
MOT figures are aggregated from the DVSA MOT Anonymised data set for 2025: class 4 initial tests, retests excluded, with failure items from failed tests (advisories and minor defects excluded), licensed under the Open Government Licence v3.0. MOT results describe roadworthiness at test, not mechanical reliability.