88.9%
MG4 pass rate
Used MG4 buying guide
In 2025, MG4 cars passed 88.9% of 4,402 initial MOT tests, 16.6 points above the 72.3% UK average. Here is where it fails and what to check before you buy.
Looking at a specific MG4? Check its finance, write-off, stolen, mileage and keeper history. £15, no account needed.
MG4 MOT record in brief
Initial MOT tests in 2025, retests excluded.
72.3%
UK average, all cars
+16.6
percentage points above average
Ranked on pass rate the MG4 sits 54th of 575 models in the data. MG as a brand averaged 80.9%, so this model runs 8 points ahead of its own brand.
A pass rate is not a reliability score. The full MG4 MOT record has the pass rate by age, every common failure and how the MG4 compares with similar cars.
MG4 fuel types
Most MG4 cars tested in 2025 were electric. Electric cars need an MOT from three years old like any other car, and their tyres, brakes, suspension and lights are tested the same way.
Where the MG4 fails its MOT
Where MG4 cars that failed their 2025 MOT were marked down, as a share of all recorded failure items.
The specific items testers recorded most often were headlamp aim too low (18.9%), 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%). See every common MG4 MOT failure.
These are DVSA failure records across every MG4 that failed, not a claim that every MG4 has these problems.
What should you check when buying a used MG4?
The areas above, most common first, and what an MOT tester looks at in each.
1
Tyres
Check tread depth across the full width of every tyre (the legal minimum is 1.6mm), and look for cuts, bulges and uneven wear. 43.2% of MG4 failure items.
2
Lamps, reflectors and electrical equipment
Walk round with every light on: headlights, brake lights, indicators, fog lights and the number plate lamp. Check no warning lights stay on after starting. 28.7% of MG4 failure items.
3
Visibility
Check the windscreen for chips or cracks in the driver's view, and that the wipers and washers clear it properly. 15.9% of MG4 failure items.
4
Suspension
Listen for knocks over bumps, check the car sits level, and look for leaking shock absorbers and split rubber gaiters. 7.1% of MG4 failure items.
5
Brakes
Make sure the pedal feels firm, the car stops in a straight line, the handbrake holds on a slope and no brake warning light is showing. 1.7% of MG4 failure items.
None of this replaces the car's own record. Run a free MOT history check on the registration to see every test, advisory and recorded mileage for that car.
What the MOT record doesn't tell you
Knowing MG4 failures cluster around tyres and lamps, reflectors and electrical equipment tells you what to inspect. It tells you nothing about whether the car is safe to buy. An MOT does not show money still owed on the car, a write-off, a theft record or a clocked odometer.
Check the exact MG4 you are looking at. One £15 report, instant results, backed by a £30,000 data guarantee. More on the MG history check.
- Outstanding finance
- Write-off records
- Stolen markers
- Mileage history
- Previous keepers
Other used MG models
The most-tested MG models in 2025, with how their MOT pass rate compares with the MG4.
Used MG4 FAQs
Is the MG4 reliable?
MOT data does not measure reliability. It records whether a car met the roadworthiness standard on the day of its test. What it does show is an 88.9% first-time pass rate for the MG4 across 4,402 tests in 2025, above the 72.3% average for all cars.
What should I check before buying a used MG4?
On the car itself, start with the areas it most often fails on: tyres, lamps, reflectors and electrical equipment and visibility. Then check the individual car's history: outstanding finance, insurance write-off records, stolen markers, mileage and previous keepers. None of these appear in the MOT record or on the V5C.
How do I check a MG4's history?
Enter the registration of the specific car. A Carpeep car history check reports outstanding finance, write-off category, stolen markers, mileage history, previous keepers, MOT and tax status, import and export markers and scrapped status in one £15 report.
MOT figures are aggregated from the DVSA MOT Anonymised data set for 2025 (class 4 initial tests, retests excluded), licensed under the Open Government Licence v3.0. MOT results describe roadworthiness at test, not mechanical reliability.