BMW 5 series, G60 / G90 / G91 (USA)

Transfer case fluid capacity & service interval

BMW 5 series, G60 / G90 / G91 (USA) models require transfer case fluid with a capacity of 0,65 liter. The data covers 3 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

Type	Specifications
550e Plug-in Hybrid xDrive (2024- )	Use: Normal Capacity 0,65 liter Code: ATC 14
530i Mild-Hybrid xDrive (2023- )	Use: Normal Capacity 0,65 liter Code: ATC 14
540i Mild-Hybrid xDrive (2023- )	Use: Normal Capacity 0,65 liter Code: ATC 14

All three xDrive configurations in the BMW 5 Series G60/G90/G91 (USA) share an identical transfer case fluid capacity of 0.65 liter, indicating a compact transfer box unit across the lineup.
The 0.65 liter figure represents a service fill capacity, which is the amount of fluid the transfer box holds during a standard fluid service rather than a full mechanical overhaul.
The 530i Mild-Hybrid xDrive, 540i Mild-Hybrid xDrive, and 550e Plug-in Hybrid xDrive all carry the same 0.65 liter transfer case capacity despite differing powertrain architectures spanning mild-hybrid and plug-in hybrid configurations.
All three configurations list a normal use condition tied to the 0.65 liter capacity, meaning the specification applies to standard operating conditions rather than severe-duty or first-change-only scenarios.