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BMW i4 Battery Health & Range: Used Buyer’s Guide

Thinking of buying a used BMW i4? Here's the battery, range and warranty picture, and the checks that tell you whether a particular car is a good one before you go and see it.

Published 14 July 2026 · EV All Day

A grey BMW i4 Gran Coupé parked on a city street
Photo by Varun Palaniappan on Unsplash

Quick answer

A used BMW i4 (2022-present) typically has usable ~67 kwh (edrive35) or ~81 kwh (edrive40 and m50, 83.9 total), a WLTP range of around 299-380 miles depending on trim 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 i4 at a glance

Body typeGran Coupé (fastback saloon)
Years2022-present
Battery (usable)Usable ~67 kWh (eDrive35) or ~81 kWh (eDrive40 and M50, 83.9 total)
WLTP range (new)Around 299-380 miles depending on trim
Real-world rangeRoughly 200-310 miles in real use depending on trim
Battery warranty8 years / 100,000 miles to 70% capacity
Battery coolingActive liquid cooling (BMW fifth-generation eDrive) with navigation-based charge preconditioning

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 i4's battery ages

The i4’s liquid-cooled pack has aged well in early data, with owners reporting only around 3.5 to 4% loss at 50,000 miles, a modest front-loaded drop that then settles into a slow decline. There is no pattern of premature failure, though a few early cars had packs replaced under recall, so a battery-health check and a recall check matter more than age alone.

Battery cooling is a big part of the story: this car uses active liquid cooling (bmw fifth-generation edrive) with navigation-based charge preconditioning. 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 i4s 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 i4

  • The eDrive35 and eDrive40 look identical but the 35 has around 13 kWh less usable battery and noticeably less range, confirm which trim you are buying
  • Several 2022-2024 powertrain and high-voltage battery recalls exist, including defective packs, so check the VIN shows the recall work completed
  • iDrive 8 software glitches, sat-nav bugs and CarPlay dropouts are the most common complaints, not the drivetrain
  • It is a heavy car, over 2 tonnes, and the M50 runs wide staggered, often run-flat, tyres, so budget for pricey rubber and check rear wear
  • Euro NCAP scored it 4 stars, marked down on safety assistance, rather than the full 5

What the Used EV Check shows for a BMW i4

Enter the registration and the Used EV Check returns, for that specific i4: 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 i4 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 i4 before you buy

Enter a registration to see this i4's battery health, real-world range now vs when new and remaining battery warranty, an instant report.

Used BMW i4 FAQ

How do I check a used BMW i4'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 i4'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 i4?+
The i4’s liquid-cooled pack has aged well in early data, with owners reporting only around 3.5 to 4% loss at 50,000 miles, a modest front-loaded drop that then settles into a slow decline. There is no pattern of premature failure, though a few early cars had packs replaced under recall, so a battery-health check and a recall check matter more than age alone. 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 i4 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 i4 have?+
BMW i4 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 i4?+
Around 299-380 miles depending on trim is the WLTP figure when new. In real use expect roughly 200-310 miles in real use depending on trim, 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.
Why does the BMW i4 M50 have less range than the eDrive40?+
They use the same 83.9 kWh battery, around 81 kWh usable. The M50's shorter range is purely down to its dual-motor all-wheel drive and performance tune, not a smaller pack, so a used M50 that returns less range than an eDrive40 is behaving exactly as designed. What matters on any used i4 is the expected range now versus when new for that specific car, which the Used EV Check estimates.

Other EV model guides

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