BatteryHigh
State of health variation on rapid charged cars
- Typically appears
- 30,000+ miles
- What to inspect
- Get a battery health readout before purchase
2022–2025 MG MG4 · common problems & known faults
A value electric hatch where battery health and software version decide the price.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed August 2026
Quick answer
The most commonly reported faults on the 2022–2025 MG MG4 are State of health variation on rapid charged cars, Charging port locking pin actuator failure, preventing charge initiation or trapping the charging cable and Infotainment and driver assist software faults. 2 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.
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Build the inspection planReliability snapshot
Based on the documented faults on this page for the MG MG4.
5.2/ 10
- Critical
- 0
- High
- 2
- Medium
- 4
- Low
- 2
Guidance only · reflects reported patterns, not a specific car's condition.
Known faults to check
SoftwareMedium
Infotainment and driver assist software faults
- Typically appears
- Age-related
- What to inspect
- Confirm software updates have been applied
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Build the inspection planBrakesMedium
Disc corrosion from regen braking
- Typically appears
- 20,000+ miles
- What to inspect
- Inspect disc faces for pitting
InteriorLow
Trim rattles and seat wear
- Typically appears
- 30,000+ miles
- What to inspect
- Drive a rough road and inspect the seats
DrivetrainMedium
Oil misting or dripping from the rear motor reduction gear casing due to breather or seal issues.
- Typically appears
- 10,000-30,000 miles
- What to inspect
- Look under the rear of the vehicle with a torch at the reduction gear casing for signs of oil weeping or fresh drips on the undertray.
SteeringMedium
Clunking or knocking noise from the steering column or rack when manoeuvring at low speeds.
- Typically appears
- 5,000-20,000 miles
- What to inspect
- With the vehicle stationary and powered on, rock the steering wheel left and right rapidly to listen for a distinct mechanical knock from the column.
ElectricalHigh
Charging port locking pin actuator failure, preventing charge initiation or trapping the charging cable.
- Typically appears
- 12-24 months
- What to inspect
- Plug in a dummy Type 2 cable, lock the car to engage the pin, and gently tug the cable to ensure the actuator holds and releases correctly.
BodyworkLow
Tailgate misalignment causing the lower edge to rub against the rear bumper, leading to paint damage.
- Typically appears
- 10,000-25,000 miles
- What to inspect
- Open and close the tailgate, checking the panel gaps along the lower edge and inspecting the top of the rear bumper for paint rub marks.
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Build my inspection planFrequently asked questions
Is the MG4 a good used EV?
Yes on price, provided battery health checks out.
What do buyers ask?
Real world range and warranty remaining.
Any recurring complaint?
Driver assistance chimes, often improved by a software update.
What is the service schedule and coolant replacement interval?
The MG4 requires servicing every 12 months or 15,000 miles, whichever comes first. A critical maintenance item is the EV battery coolant, which must be replaced at 48,000 miles or four years. Ensure this has been completed on older or higher-mileage examples to maintain the high-voltage battery warranty.
How does the real-world range compare to the official WLTP figures?
While the Long Range model claims a WLTP figure of 281 miles, real-world UK driving typically yields around 220 to 240 miles in mild weather. During winter months, increased heater usage and cold battery temperatures can drop this to approximately 180 miles. The standard range model sees proportional reductions.
Why do these vehicles suffer from accelerated rear tyre wear?
The MG4 is rear-wheel drive and delivers instant electric torque to the rear axle. Combined with the vehicle's substantial kerb weight, this frequently leads to accelerated wear on the rear tyres. Dealers should carefully check rear tread depths, as replacement is often required much earlier than on equivalent front-wheel-drive hatchbacks.
Sources & further reading
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.
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