2018–2020 MG3
Browse our directory of 2018–2020 MG3 vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2018–2020 MG3 has 4 known issues. 2 of these are classified as serious faults that could be expensive to repair. 2 are moderate concerns worth inspecting before purchase.
Engine Timing Chain Stretch
SeriousThe metal timing chain can stretch over time, leading to rattling noises and, if ignored, catastrophic engine failure.
Symptoms: Metallic rattling on cold start, Check engine light...
Est. repair cost: £500–£900
Clutch Pedal Failure
SeriousSome 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.
Symptoms: Clutch pedal drops to the floor, Gears difficult to select...
Est. repair cost: £200–£400
Thin Paint and Surface Rust
ModerateOwners often report thin paint that chips easily, leading to surface rust if not treated quickly.
Symptoms: Rust spots on the roof edge, Corrosion around the windscreen seal
Est. repair cost: £150–£400
Leaking Radiator
ModerateThe radiators on some MG3s are prone to developing leaks, which can lead to overheating if coolant levels are not monitored.
Symptoms: Coolant smell after a drive, Visible pink/orange staining on the radiator...
Est. repair cost: £150–£300
Buying Tips for the 2018–2020 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.
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