Capacity differences between 60Ah, 94Ah and 120Ah cars
- Typically appears
- Any
- What to inspect
- Confirm the battery version and run a state-of-health check

A 2022 BMW i3 is now 4 years old, so an average example has covered around 54,000 miles. The final model year of the generation · generally the most sorted build, so mileage, servicing and condition matter more than build-year faults. Check the state safety inspection and service history alongside the documented faults below, which are sorted by whether a 2022 car has usually reached the mileage where they appear.
Compiled & reviewed by the VehicleFaults Research Team
The 2022 BMW i3 is 4 years old, so an average example has covered roughly 54,000 miles. At that mileage most documented faults are still ahead of it, so servicing evidence matters more than wear. A further 4 typically appear later in the car's life.
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Build the inspection planAge, electronics and build-related issues that are not mileage-driven.
Capacity differences between 60Ah, 94Ah and 120Ah cars
Range extender fuel system faults from lack of use
Carbon body repair complexity after accident damage
Spurious 'Drivetrain Malfunction' errors, locked charging cables, or complete vehicle immobilisation due to a degraded 12V battery.
Typically appear later than this year's average mileage · worth budgeting for rather than inspecting.
Narrow tyre availability and rear bush wear
Rear end clunking under acceleration or regen braking due to sheared plastic motor mount brackets (primarily pre-2016 models).
AC compressor failure, which can send metal swarf into the high-voltage battery cooling loop, causing catastrophic battery damage.
Creaking or knocking noises when steering, caused by perished top strut mounts and split shock absorber dust boots.
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Build my inspection planThe 120Ah cars. Range on early 60Ah examples is now too short for most buyers.
Only when unused. Fuel system issues appear on cars where the generator never runs.
The carbon structure needs specialist repair, so poor previous work is both a safety and a value issue.
You can access the hidden service menu via the instrument cluster. Hold the trip reset button, sum the last five digits of the VIN to unlock it, and navigate to the 'Batt. Kapa. max' menu. This displays the usable battery capacity in kWh, giving a quick snapshot of degradation without diagnostic tools.
The KLE is the onboard charger responsible for AC charging. Early units were prone to overheating and failure, limiting the car to slow charging speeds or preventing charging entirely. Always plug the car into a Type 2 fast charger on the forecourt to verify it pulls the expected 7.4kW or 11kW.
The rear-hinged doors are generally robust, but the lower latches are prone to water ingress and seizing. If the latches stick, the door will not close properly, resulting in an immediate MOT failure. Check that both rear doors open smoothly and latch securely without requiring excessive force.
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