Second Hand BMW i3 AC Compressor

The BMW i3 (I01) ran from 2013 to 2022 as a single generation, with a facelift in 2017 that brought interior and exterior updates but no fundamental drivetrain change, so a 2014 and a 2017 share the same core electric drive architecture. That said, whether a specific compressor crosses that 2017 facelift boundary without issue is something you should confirm with the breaker against your exact registration, as ancillary mounting or connector details can change mid-production. Supplying your VIN or registration to the breaker is the safest way to get a confirmed match.

The i3 REx (Range Extender) added a small two-cylinder petrol engine alongside the electric drivetrain, and because the air conditioning system on both variants is electrically driven rather than belt-driven, the compressor design is closely related; however, the presence of additional underbonnet components on the REx means mounting and plumbing positions can differ. Check the engine or drivetrain code on your V5 and give that to the breaker so they can confirm the compressor from their donor car is a direct match for your variant. Never assume fitment based on the i3 badge alone.

Trim levels on the BMW i3 — such as Base, Suite, Loft, and later Atelier — relate to interior finish, upholstery, and optional equipment, and they do not affect which AC compressor is fitted; the compressor follows the drivetrain variant and model year, not the interior specification. You may receive a compressor pulled from a very different interior to your own, but that has no bearing on whether it will work. Focus your search on matching the drivetrain code and year rather than trim name.

Year does matter to a degree, because the i3 ran from 2013 to 2022 and battery pack upgrades were introduced over that time — notably the move to a larger 94Ah (33kWh) pack around 2016 and a 120Ah (42kWh) pack later — and these updates could influence related electrical and cooling system components. Your best guide is the full VIN or registration number, which a good breaker will use to cross-reference their stock against your exact build. Do not rely on model year alone; give the breaker as much detail as possible.

Physically fitting a used AC compressor is a job many independent garages and experienced home mechanics can handle, involving refrigerant recovery, component swap, and recharge — all of which require proper air-conditioning equipment and an F-Gas qualified technician for the refrigerant work in the UK. Whether the replacement unit requires any ECU pairing or coding to your specific vehicle is something you must confirm with the breaker or a BMW specialist, as this can vary and is not something we can state as fact here. Budget for a professional regas and ask your fitting garage about coding before you buy.