Used BMW i7 Differential

The BMW i7 (G70) launched in 2023 as a single generation with no facelift boundary to worry about yet, so year-to-year variation within that run is your main concern. Fitment of the differential is driven primarily by the drive configuration and motor/engine code — xDrive50 and eDrive50 variants use different hardware, for instance. Confirm the exact variant code against your registration with the breaker before buying, as mid-production running changes can affect mounts and ancillaries.

These are fundamentally different configurations — the eDrive50 is rear-wheel drive with a single rear motor, while the xDrive50 has dual motors and a front axle as well, meaning the rear differential and drive units are not the same part. You should not assume interchangeability between these two variants even within the same model year. Always quote your full variant and registration to the breaker so they can match against the correct drive system.

Trim level itself does not determine differential fitment — what matters is the drivetrain configuration and motor/variant code underneath. However, the M70 xDrive is a genuinely different performance variant with higher-output dual motors, so it is likely to use a different rear drive unit to the eDrive50 or xDrive50 rather than simply a badged-up version of the same part. Confirm your variant code with the breaker; the M70's diff is not the same as a standard i7's and should not be treated as interchangeable.

The i7 (G70) is a distinct platform from the iX (U11), and differential and drive unit components are not cross-compatible across those model lines. Even where BMW shares electric drivetrain technology, physical fitment, mounting points, and software pairing differ between platforms. Only source a differential confirmed as pulled from the same i7 variant as your vehicle, and confirm coding requirements with the breaker.

Whether the drive unit or differential control module requires coding or pairing to your vehicle after fitting a used unit is something you must confirm with the breaker and your chosen installer rather than assume. BMW electric drivetrains can involve electronic pairing between components, and this is not something that can be guaranteed in advance from the part listing alone. Raise this directly with the breaker against your registration before purchasing.