BMW 8 series Convertible, G14 / F91 (EU)
Transfer case fluid capacity & service interval
BMW 8 series Convertible, G14 / F91 (EU) requires transfer case fluid with a capacity of 0,7 liter. The data covers 5 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 840d Mild-Hybrid xDrive Convertible DPF (250 kW) (2020- ) |
|
| 840d xDrive Convertible DPF (235 kW) (2019-2020) |
|
| M850i xDrive Convertible PF (2019- ) |
|
| 840d xDrive Convertible DPF (235 kW) (2018-2019) |
|
| M850i xDrive Convertible PF (2018-2019) |
|
Additional Notes
- Across all listed configurations of the BMW 8 Series Convertible (G14 / F91), the transfer case fluid capacity is 0.7 liter, applying uniformly to both diesel and petrol xDrive variants.
- A 0.7 liter capacity is characteristic of a compact transfer case unit, consistent with the relatively small fluid volume required for a transverse or longitudinal all-wheel-drive transfer box in a performance-oriented convertible platform.
- All five rows carry a normal use condition tied to the 0.7 liter fill figure, meaning the specified capacity applies under standard operating circumstances rather than severe or first-change-only scenarios.
- The 840d xDrive Convertible DPF rated at 235 kW appears across two separate year band entries, covering 2018-2019 and 2019-2020, both sharing the identical 0.7 liter transfer case specification.
- The 840d Mild-Hybrid xDrive Convertible DPF at 250 kW represents a higher output diesel variant introduced from 2020, yet the transfer case capacity remains at 0.7 liter, unchanged from the non-hybrid 235 kW diesel predecessor.
- The M850i xDrive Convertible PF, a petrol-powered variant, also carries a 0.7 liter transfer case capacity under normal use, placing the petrol and diesel configurations on equal footing for this particular service fill specification.