The BMW i4 battery: what it is worth, year by year
BMW i4, since 2021, pack of about 83.9 kWh. Versions and capacities, manufacturer warranty, expected state of health, possible battery lease and the cost of a failure.
Indicative estimate, excluding diagnosis.
Is this i4 still under warranty?What is this car’s battery worth?
Remaining warranty, expected state of health, battery lease and cost of a failure. All at once — and nothing you enter leaves your browser.
We check, we don’t certify. The date of first registration is shown in box B of the V5C logbook. The state of health given is a range calculated from the battery’s age, mileage and chemistry: only a measurement on the vehicle gives a figure.
Battery versions of the BMW i4
A model sold over several years does not have the same battery from start to finish, and two versions are often sold side by side. Identify yours: capacity and chemistry change the range, the expected degradation and the cost of a replacement.
- eDrive40, M50 (80,7 kWh)2021 – 202480.7 kWhNMC
battery sold with the car
- 2022 recall on cars built from 15 September to 30 November 2021: the crush cushions for the high-voltage battery may not have been fitted, with a fire risk in the event of a crash.
- 2022 recall on cars built from 5 July 2021 to 8 July 2022: a manufacturing fault may cause the high-voltage battery to fail, with a fire risk. Check by VIN.
- Recall issued in January 2026 on cars built from 7 July 2021 to 14 February 2024: non-compliant cell modules may have their frame fail, with the high-voltage system shutting down and a fire risk; module replacement.
- eDrive35 (66 kWh)2022 – 202466 kWh
battery sold with the car
- Recall issued in January 2026 on cars built from 7 July 2021 to 14 February 2024: non-compliant cell modules may have their frame fail, with the high-voltage system shutting down and a fire risk; module replacement.
- eDrive40, xDrive40, M50 (81,3 kWh)since 202481.3 kWh
battery sold with the car
- eDrive35 (67,1 kWh)since 202467.1 kWh
battery sold with the car
- M60 xDrivesince 2025
Usable capacity not established for this version: read it on the car or in its documents.
battery sold with the car
The expected state of health of a BMW i4 battery
Three model years of this car, at the average French annual mileage of 9,321 miles, each with its chemistry. These ranges describe where a comparable battery usually sits, not yours: use, climate and charging habits spread the fleet widely.
- 2021 model year83 to 92%5 years, 46,603 miles, NMC chemistry
- 2024 model year91 to 97%2 years, 18,641 miles, NMC chemistry
- 2026 model year98 to 100%under a year, chemistry not recorded
For a figure rather than a range, you need a measurement on the car. What state of health means and how it is measured.
What the energy costs per 100 miles
Charged at home, a BMW i4 uses between £6.40 and £11.91 of electricity per 100 miles.
By comparison, a recent petrol car averages 38.7 mpg (7.3 L/100 km) in real-world use: about £20.30 of fuel per 100 miles, at the average price of unleaded petrol (£1.728 per litre on 2 November 2026).
Bottom of the range: the WLTP official consumption, from 2.8 to 4.1 miles/kWh depending on the version. Top: 25% more, the measured gap between official figures and real-world use. Electricity at £0.2632 per kWh, the Ofgem price cap.
Charging at a public charge point: prices vary too much from one operator to another to be given here.
Compare the cost of every modelSources: consumption from the manufacturer or the European registration database; electricity: Ofgem Energy Price Cap, 1 October to 31 December 2026, direct debit, Great Britain average, no VAT (announced 26 August 2026); real-world gap: TNO 2025 and ICCT 2025; petrol: JRC 2025 and weekly road fuel prices from the Department for Energy Security and Net Zero (DESNZ). Checked on 21 September 2026.
Charging at home: a night on a plug
Plugged in for 8 hours on a 3-pin plug, a BMW i4 adds between 40 and 75 miles; on a 16 A commando socket, between 65 and 120 miles, depending on the version and how it is driven.
Every model compared, the cable to check and what installation involvesAdvertisement
Specifications and price ranges given as an order of magnitude, still being confirmed with garages. Only a price given after diagnosis is binding.
The BMW i4 battery
Sold since 2021, with a pack of about 83.9 kWh.
The BMW i4 pack can be repaired module by module. When only one module is at fault, the repair costs far less than a new pack.
Faults reported by garages in France
- Recent cars, pack failures still rare.
Find out what your i4 is worth
The model, the date of first registration and the mileage are all it takes: remaining warranty, expected state of health, possible battery lease and the cost of a failure. Nothing is sent, the calculation runs in your browser.
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