Top fixes

Top MG MG4 fixes every owner should know

Cheap, practical fixes for the MG MG4 faults you actually meet, with rough costs and what a garage will charge.

Updated 4th September 2026

TL;DR

The MG MG4 is known for its practicality but has common faults like battery issues, faulty sensors, and interior trim problems. Owners can perform some DIY fixes, while others may require garage assistance, with costs varying from £20 to £300 for parts and £50 to £200 for labour.

Common Battery Issues

One of the most frequent complaints is related to the battery. Owners may find that the battery drains quickly or fails to hold a charge. This is often due to a faulty battery management system.

Fix: Replace the battery and check the management system. This is a DIY job if you have basic tools and knowledge.

Faulty Sensors

Another common issue is faulty sensors, particularly the parking sensors and tyre pressure monitoring sensors. These can lead to inaccurate readings and warning lights.

Fix: Replacing a faulty sensor is usually straightforward.

Interior Trim Problems

Owners have reported issues with loose or damaged interior trim. This can be annoying but is generally not a major safety concern.

Fix: Most trim repairs can be done at home with adhesive or clips.

Software Updates

Occasionally, the vehicle may require software updates to improve functionality or fix bugs. These updates can resolve various electronic issues.

Fix: This is best handled at a garage. It is not a DIY fix, as it requires specific equipment.

Brake System Checks

Some MG4 owners have reported issues with the braking system, including squeaking noises or reduced effectiveness. This is critical for safety.

Fix: Inspecting the brake pads and discs is essential. It’s important to address this issue promptly.

MG MG4 recall record

1 recall has been issued for the MG MG4, in 2023.

  1. Potential for MG4 vehicles to superlock whilst still in running mode

    R/2022/355

    Issued 7 January 2023

    On affected vehicles there is potential for MG4 vehicles to superlock whilst still in running mode when the vehicle comes to a stop. The doors are locked and cannot be opened by the interior/exterior handles the remote key is disabled and the windows will not function.

    Remedy:The remedy involves a software update.

    Affects cars built Jun 2022 to Oct 2022

A recall applies to a build range, not to every car of this model. Check a registration to see whether one specific vehicle has an outstanding recall.

Frequently asked questions

What are common faults with the MG MG4?

Common faults include battery issues, faulty sensors, and interior trim problems.

Can I fix these issues myself?

Many issues are DIY-able, especially minor electrical and trim repairs.

Is it worth fixing minor interior trim problems?

Yes, fixing trim issues can improve resale value and comfort.

Sources