BMW i3 Battery Health & Range, Used Buyer’s Guide

Quick answer

A used BMW i3 (2013-2022) typically has usable ~19 kwh (60 ah), ~27 kwh (94 ah) and ~37 kwh (120 ah), a WLTP range of around 80-188 miles depending on battery 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 i3 at a glance

Body type	City car / hatchback
Years	2013-2022
Battery (usable)	Usable ~19 kWh (60 Ah), ~27 kWh (94 Ah) and ~37 kWh (120 Ah)
WLTP range (new)	Around 80-188 miles depending on battery
Real-world range	Roughly 60-160 miles in real use
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 i3's battery ages

The i3’s liquid-cooled pack has aged well; the real limiter is simply the small battery on early 60 Ah cars. A REx (range-extender) version adds a small petrol generator to top the battery up.

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 i3s 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 i3

Decide between pure-electric (BEV) and range-extender (REx), the REx has a petrol engine to maintain
Early 60 Ah cars have a small usable battery and short range
The carbon-fibre body needs specialist repair after accident damage
Rear "coach" doors and narrow eco tyres divide opinion

What the Used EV Check shows for a BMW i3

Enter the registration and the Used EV Check returns, for that specific i3: 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 i3 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 i3 before you buy

Enter a registration to see this i3'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 i3 FAQ

How do I check a used BMW i3'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 i3'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 i3?+

The i3’s liquid-cooled pack has aged well; the real limiter is simply the small battery on early 60 Ah cars. A REx (range-extender) version adds a small petrol generator to top the battery up. 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 i3 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 i3 have?+

BMW i3 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 i3?+

Around 80-188 miles depending on battery is the WLTP figure when new. In real use expect roughly 60-160 miles in real use, 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.