Second Hand BMW 8 Series Window Winder Motor

No — the E31 (1990–1999) and the current-generation 8 Series (G14/G15/G16, 2018 onwards) are completely different platforms with no shared door architecture, so the motors are not interchangeable. Always quote your registration to the breaker so they can pull the correct part for your exact generation.

Yes — the G15 is a two-door coupé and the G16 is a four-door Gran Coupé, so their door structures are different and the motors are not the same; always specify which body style you have. Make sure you also tell the breaker which side you need — NS (nearside, passenger left) or OS (offside, driver right) — as these are handed parts.

Trim level does not affect window winder motor fitment on the G15 8 Series; the door and motor assembly is the same across 840i, 840d, M Sport, and M850i variants. One cosmetic note: door cards and switch surrounds may differ between trims, but the motor itself is interchangeable within the same generation, door position, and side.

Both years fall within the current G14/G15/G16 generation (2018 onwards), so a same-body-style, same-side motor from a 2022 car is likely to be compatible with a 2018 car. However, confirm this with the breaker against both registrations before purchasing, as mid-production running changes can occasionally affect component fitment.

Give the breaker your full registration, confirm whether you have the two-door G15 Coupé, G14 Convertible, or four-door G16 Gran Coupé, and state clearly whether the faulty motor is on the NS (nearside, passenger/left) or OS (offside, driver/right). The generation and door position are the critical fitment details here.

Both years sit within the single E31 generation (1990–1999), so a motor from 1993 and one from 1997 are broadly from the same platform — however, confirm the exact door position and side (NS or OS) with the breaker, and ask them to verify against both registrations in case of any mid-production changes during that run.