BMW i5 Battery Health & Range: Used Buyer’s Guide

Quick answer

A used BMW i5 (2023-present) typically has usable ~81 kwh (84 total), a single liquid-cooled pack, a WLTP range of around 314-394 miles depending on version when new, and a battery warranty of 8 years / 100,000 miles 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.

BMW i5 at a glance

Body type	Executive saloon (Touring estate also sold)
Years	2023-present
Battery (usable)	Usable ~81 kWh (84 total), a single liquid-cooled pack
WLTP range (new)	Around 314-394 miles depending on version
Real-world range	Roughly 250-320 miles in real use, less in winter
Battery warranty	8 years / 100,000 miles 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 i5'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 i5s 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 BMW i5

eDrive40 rear-drive vs M60 all-wheel-drive changes range and running costs
Options-heavy cars, confirm which features (and any subscriptions) transfer
Large alloys and tyres add to running costs, check condition
Newer, higher-value car, so buy with plenty of battery warranty left

What the Used EV Check shows for a BMW i5

Enter the registration and the Used EV Check returns, for that specific i5: 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 BMW i5 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 BMW i5 before you buy

Enter a registration to see this i5'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 BMW i5 FAQ

How do I check a used BMW i5'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 BMW i5'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 BMW i5?+

The i5 is the electric version of the latest 5 Series and uses BMW’s current liquid-cooled battery, which follows the durable pattern of the brand’s earlier packs with a healthy capacity buffer. It is a recent car, so long-term data is limited, but the platform and cooling are proven and capacity loss is unlikely to be the main concern. 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 i5 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 BMW i5 have?+

BMW i5 battery warranty is typically 8 years / 100,000 miles 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 BMW i5?+

Around 314-394 miles depending on version is the WLTP figure when new. In real use expect roughly 250-320 miles in real use, less in winter, 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.

Is the BMW i5 battery the same as the i4?+

They are closely related, both use BMW’s current-generation liquid-cooled battery technology, with the i5 carrying a slightly larger pack of around 81 kWh usable suited to the bigger saloon. Both have the reassuring durability record of BMW’s earlier EVs. On a used i5, a used EV check estimates the pack’s health and its real-world range now versus when new.