UK Reliability Directory

MG MG4

Production Years: 2022 - 20245 Documented Faults

The MG4 EV, launched in 2022, has been an absolute disruptor in the UK electric vehicle market, offering rear-wheel-drive dynamics and class-leading battery range at a price point that undercuts almost all of its European rivals. Built on a dedicated EV platform (the Modular Scalable Platform), it represents a huge step forward for the brand compared to the older ZS EV, offering sharp styling and a minimalist interior. In the UK, it is highly prized for its exceptional value for money and genuinely engaging handling, making it a favorite for both private buyers and company car fleets. However, the MG4’s reputation as a budget champion is somewhat marred by a series of frustrating "teething" issues and software glitches that have plagued early production models. Owners frequently report sluggish or freezing infotainment screens, and the Lane Keep Assist (LKA) system is notoriously over-intrusive, often requiring a software update to behave predictably. Additionally, there have been some reports of the onboard AC charger failing, which prevents home charging, and minor build quality complaints regarding thin exterior paint and interior trim rattles over broken UK roads. When buying a used MG4 in the UK, it is absolutely essential to verify that the car has a full MG main dealer service history to maintain the crucial 7-year/80,000-mile warranty. Prospective owners should ask for a battery "State of Health" (SOH) report, especially on older or high-mileage examples, and thoroughly test the touchscreen to ensure it is running the latest software version. It is also important to test drive the car to evaluate the Lane Keep Assist system and ensure there are no "HV System" warning lights on the dashboard. Despite the electronic niggles, a well-maintained MG4 remains one of the most compelling and affordable ways to transition to electric motoring.

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Common Faults & Reliability

These are the most common documented problems for the MG MG4, sorted by their typical impact and frequency.

Aggressive Lane Keep Assist (LKA)

low severity

The LKA system on early software can provide sudden and intrusive steering inputs. Which? found it could pull the car onto the wrong side of the road. Software updates have improved this significantly.

Est. repair cost:Software Update / £0

Rear Drive Unit Oil Leak

high severity

Some early MG4 models have suffered from oil leaks from the rear motor/drive unit.

Est. repair cost:£0 (Warranty)

Infotainment Screen Blackouts

medium severity

The central touchscreen can go black or freeze during driving, sometimes requiring a full system restart. This is a known software issue addressed by updates.

Est. repair cost:Software Update / £0
View All 5 Documented Issues

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