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MG EV Battery Health by Model: Used Buyer’s Guides

Buying a used MG EV? Here's how their batteries age, what the warranty covers, and the model-by-model guides, plus how to check any specific car's battery health by registration.

Published 13 July 2026 · EV All Day

The MG EV battery warranty

MG battery cover is typically 7 years / 80,000 miles on cars registered before 2024, rising to 8 years / 100,000 miles from 2024, both to 70% capacity (and lower again where a car was used for private hire). The warranty usually transfers with the car, so what matters on a used one is how much is left and whether the battery is still comfortably above the capacity threshold. Read more in our guide to how EV battery warranties work.

How MG EV batteries age

MG undercut the market on price and the liquid-cooled packs have generally held up, but the range picture moves fast: the ZS EV changed pack with its facelift and the MG4 offers three battery sizes across two chemistries, so pinning down exactly which car you are looking at is half the job on a used MG. Software and electrics, not the battery, dominate the fault reports.

Whatever the make's reputation, individual cars vary with charging habits, climate and mileage, which is why we always frame battery health as an estimate for the specific vehicle. Our guide to what's normal for EV battery degradation covers the general picture.

MG model guides

A white MG ZS EV parked by the sea at sunset

MG ZS EV

Small SUV · 2019-present · Around 163-273 miles depending on battery

Battery health & range

MG4 EV

Hatchback · 2022-2026 (original shape) · Around 218-323 miles depending on battery

Battery health & range

MG5 EV

Estate · 2020-2025 · Around 199-250 miles depending on battery

Battery health & range

Don't see the model you're looking at? Any EV's battery health can be checked by registration.

What the Used EV Check shows for a MG

Enter the registration and the Used EV Check returns, for that specific car: 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, plus the full MOT and mileage history.

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 MG EV before you buy

Enter a registration to see the car's estimated 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 MG EV battery FAQ

How do I check a used MG EV's battery health?+
You can't see battery state of health on the V5C, the MOT or the advert. Enter the registration into the Used EV Check and it returns the car's estimated real-world range now versus when new, a degradation estimate, a battery-health grade where a manufacturer test record exists, and the remaining battery warranty. It works the same way for any MG EV, and range data is powered by ClearWatt.
What battery warranty do MG electric cars have?+
MG battery cover is typically 7 years / 80,000 miles on cars registered before 2024, rising to 8 years / 100,000 miles from 2024, both to 70% capacity (and lower again where a car was used for private hire). It usually transfers to the next owner, and the Used EV Check shows how much of it is left in miles and months for a specific car.
How long do MG EV batteries last?+
MG undercut the market on price and the liquid-cooled packs have generally held up, but the range picture moves fast: the ZS EV changed pack with its facelift and the MG4 offers three battery sizes across two chemistries, so pinning down exactly which car you are looking at is half the job on a used MG. Software and electrics, not the battery, dominate the fault reports. As a rule of thumb, EV batteries lose their first few percent early on and then settle into a slow decline, so a car that still returns close to its original range for its age and mileage is ageing well.
How long is the battery warranty on a used MG EV?+
It depends on when the car was first registered. MG cars registered before 2024 carry a 7-year / 80,000-mile warranty covering the whole car including the battery; from 2024 the high-voltage battery is covered for 8 years / 100,000 miles. Both guarantee the battery against dropping below 70% capacity, and cover is reduced if the car was used for private hire. The Used EV Check shows how much warranty is left for a specific car.

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Buying or selling used EVs in volume?

EV battery health checks at a flat £3.99 per check for trade accounts, plus a team dashboard and dedicated support.

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