Engine Timing Chain Stretch
SeriousEngineThe metal timing chain can stretch over time, leading to rattling noises and, if ignored, catastrophic engine failure.
Est. Repair Cost: £500–£900
Reliability GuideCommon Problems with the
Common Problems with the
2018–2019 MG MG3
We've identified 4 known issues that can affect the 2018–2019 MG MG3. 2 of these are serious faults that could be expensive to repair.
4
Known Issues
2
Serious
2
Moderate
0
Minor
All Known Issues
Clutch Pedal Failure
SeriousGearbox & TransmissionSome MG3 owners have reported the clutch pedal suddenly dropping to the floor and not returning. The cause is typically a failed clutch master or slave cylinder.
Est. Repair Cost: £200–£400
Thin Paint and Surface Rust
ModerateBodywork & RustOwners often report thin paint that chips easily, leading to surface rust if not treated quickly.
Est. Repair Cost: £150–£400
Leaking Radiator
ModerateCooling SystemThe radiators on some MG3s are prone to developing leaks, which can lead to overheating if coolant levels are not monitored.
Est. Repair Cost: £150–£300
Buying Tips for 2018–2019 MG MG3
- ✓Listen for a rattle from the engine on cold starts, which can indicate timing chain stretch.
- ✓Inspect the paintwork carefully, especially on the roof and around the windscreen for signs of early corrosion.
- ✓Check all infotainment functions; the system is known for being laggy and occasionally freezing.