Used BMW i4 Ignition Barrel

No — the BMW i4 is a fully electric vehicle and has no ignition barrel at all. Like all EVs, it uses a push-button start system combined with a key fob or BMW digital key, so there is no physical barrel for a key to turn. If you are looking for a replacement start button, keyless entry module, or EWS/immobiliser component, a breaker who specialises in BMW EVs would be the right person to speak to.

Almost certainly not — the i4 has no ignition barrel in any of its variants (eDrive35, eDrive40, M50, or xDrive40), as it is a pure electric car with push-button start throughout the entire range. The part a seller is describing may be a start/stop button assembly, steering column switch cluster, or a related electronic component — it is worth going back to the breaker and clarifying exactly what they are listing. Do not purchase a part described as an ignition barrel for an i4, as no such part was ever fitted to this model.

The BMW i4 (G26) shares its bodyshell with the 4 Series Gran Coupé, and combustion G26 models do have an ignition barrel — but because the i4 itself has no barrel, there is nothing to swap it into. If you are actually sourcing a start button or steering column component from a donor G26 4 Series Gran Coupé for your i4, the electronic architecture differs between EV and ICE variants, so confirm with the breaker that the specific part number matches your i4's registration before buying.

Depending on the fault you are experiencing, the part you need is most likely the push-button start/stop switch, the steering column electronics module, the comfort access module, or a key fob and its associated receiver. Describe your exact symptom — for example, the car not recognising the key, or the start button not responding — to a BMW EV-specialist breaker so they can identify the correct used part. Searching for these by your vehicle's VIN or registration will give the breaker the best chance of finding a compatible unit.