MG4 EV Battery Health & Range: Used Buyer’s Guide

Quick answer

A used MG4 EV (2022-2026 (original shape)) typically has usable ~50.8 kwh (51, lfp), ~61.7 kwh (64) or ~74.4 kwh (77, extended range), a WLTP range of around 218-323 miles depending on battery when new, and a battery warranty of 7 years / 80,000 miles on cars registered before 2024, 8 years / 100,000 miles from 2024, to 70% capacity. The value of any individual car comes down to its battery health, check the real-world range now versus when new before you buy.

MG4 EV at a glance

Body type	Hatchback
Years	2022-2026 (original shape)
Battery (usable)	Usable ~50.8 kWh (51, LFP), ~61.7 kWh (64) or ~74.4 kWh (77, Extended Range)
WLTP range (new)	Around 218-323 miles depending on battery
Real-world range	Roughly 185-260 miles in real use depending on battery and season
Battery warranty	7 years / 80,000 miles on cars registered before 2024, 8 years / 100,000 miles from 2024, to 70% capacity
Battery cooling	Active liquid cooling

Figures are typical across the model's life and vary by year and trim, treat them as a guide, not a guarantee for a specific car.

How the MG4's battery ages

Battery cooling is a big part of the story: this car uses active liquid cooling. Cars that have spent their life on rapid chargers, been left sitting at 100%, or lived somewhere hot tend to lose capacity faster, which is why two identical MG4s on the same mileage can be worth different amounts. Read more in our guide to what's normal for EV battery degradation.

What to watch out for on a used MG4 EV

The SE badge covers two very different cars: 51 kWh LFP (218 miles) and 64 kWh (281 miles), confirm which you’re viewing
A weak reliability-survey record (electrics and infotainment), buy on evidence of software updates and dealer fixes
A 2023 recall covered early cars that could superlock with the driver inside, check it was done on 2022 builds
Registration date changes the battery warranty (7yr/80k before 2024, 8yr/100k after), and private-hire history cuts it further

What the Used EV Check shows for a MG4 EV

Enter the registration and the Used EV Check returns, for that specific MG4: its expected real-world range now versus when new, an estimated degradation figure, a battery-health grade where a manufacturer test record exists, and the battery warranty remaining in miles and months. It also pulls the full MOT and mileage history so you can spot clocking or a car that has covered far more motorway miles than the advert suggests.

It's the fastest way to tell a good MG4 EV from a tired one before you drive out to view it. For the wider process, see our complete used-EV buyer's guide and how to check an EV's battery health.

Range and battery-health figures are estimates modelled from real-world data and are shown for the specific vehicle in the Used EV Check. Range data is powered by ClearWatt. A battery-health grade is shown where a manufacturer test record exists, it is a comparative grade, not a measured state-of-health percentage.

Range data powered by ClearWatt

Check a used MG4 EV before you buy

Enter a registration to see this MG4's battery health, real-world range now vs when new and remaining battery warranty, an instant report.

See the Used EV Check (£9.99) →Try the free EV check

Used MG4 EV FAQ

How do I check a used MG4 EV's battery health?+

You can't see battery state of health on the V5C, the MOT or the advert, and DVLA doesn't publish it. Enter the registration into the Used EV Check and it returns this MG4 EV's estimated real-world range now versus when new, its degradation estimate, a battery-health grade where a manufacturer test record exists, and the remaining battery warranty. Range data is powered by ClearWatt.

How much battery degradation is normal on a used MG4 EV?+

Too new for long-term degradation data, and the packs have not been the problem: software and electrics dominate the MG4’s fault reports. The battery habit that matters is the monthly slow "equalisation" charge MG’s own manual asks for, especially on the LFP (51 kWh) car. As a rule of thumb, most EV batteries lose the first few percent early on and then settle to a slow decline, so a used MG4 that still returns close to its original range for its age and mileage is a good sign. The Used EV Check estimates this specific car's degradation for you.

What battery warranty does the MG4 EV have?+

MG4 EV battery warranty is typically 7 years / 80,000 miles on cars registered before 2024, 8 years / 100,000 miles from 2024, to 70% capacity. It covers the battery falling below a set capacity within that time or mileage, and it usually transfers to you as the next owner. The Used EV Check shows how much of the warranty is left in miles and months.

What is the real-world range of a used MG4 EV?+

Around 218-323 miles depending on battery is the WLTP figure when new. In real use expect roughly 185-260 miles in real use depending on battery and season, and less again in cold weather or at motorway speeds. What matters on a used car is the expected range now, which the Used EV Check estimates for the specific vehicle rather than quoting the brochure.

Do MG4 batteries need special charging?+

A little. MG’s own manual asks for a full slow "equalisation" charge at least monthly, and the car displays a reminder when one is overdue. The 51 kWh SE Standard Range uses an LFP battery that is happy being charged to 100% routinely; the 64 and 77 kWh cars use NMC cells that prefer a lower daily limit via the built-in charge target. Rapid charging is best kept for longer trips.