BMW 4 series Gran Coupé, G26 (USA)

Differential fluid capacity & service interval

BMW 4 series Gran Coupé, G26 (USA) differential fluid capacity ranges from 0,6 liter to 1 liter. The data covers 9 configurations.

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

TypeSpecifications
  • 430i Gran Coupé (2024- )
  • Rear
  • Use: Normal
  • Capacity 0,8 liter
  • Code: 190AL
  • 430i Gran Coupé (2024- )
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Code: 215 LWS SA2T4
  • 430i xDrive Gran Coupé (2024- )
  • Rear
  • Use: Normal
  • Capacity 0,8 liter
  • Code: 190AL
  • 430i xDrive Gran Coupé (2024- )
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Code: 215 LWS SA2T4
  • M440i Mild-Hybrid xDrive Gran Coupé (2024- )
  • Front
  • Use: Normal
  • Capacity 0,6 liter
  • Code: 170AL
  • M440i Mild-Hybrid xDrive Gran Coupé (2024- )
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • M440i Mild-Hybrid Gran Coupé (2022-2024)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Code: 215 LWS SA2T4
  • M440i Mild-Hybrid xDrive Gran Coupé (2021-2024)
  • Front
  • Use: Normal
  • Capacity 0,6 liter
  • Code: 170AL
  • M440i Mild-Hybrid xDrive Gran Coupé (2021-2024)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Code: 215 LWS SA2T4

Additional Notes

  • The BMW 4 Series Gran Coupé G26 rear differential carries either 0.8 liter or 1 liter of fluid depending on the specific unit fitted, and both capacities are listed under normal use conditions for the 430i Gran Coupé starting from 2024.
  • The dual rear differential capacity entries for the 430i Gran Coupé reflect the presence of two different rear differential assemblies that may be installed in the same model, each requiring a distinct service fill volume.
  • The 430i xDrive Gran Coupé starting from 2024 shares the same dual rear differential capacity pattern of 0.8 liter and 1 liter seen in the rear-wheel-drive 430i variant, indicating the rear axle unit varies independently of the drivetrain configuration.
  • The M440i Mild-Hybrid Gran Coupé covering 2022-2024 lists a single rear differential capacity of 1 liter under normal use, with no dual-capacity variation noted for that configuration.
  • The M440i Mild-Hybrid xDrive Gran Coupé adds a front differential to the service scope, carrying 0.6 liter under normal use conditions, a figure that applies across both the 2021-2024 and the 2024-onward entries for that variant.
  • The rear differential on the M440i Mild-Hybrid xDrive Gran Coupé holds 1 liter under normal use, consistent across both the 2021-2024 and the later entry starting from 2024, suggesting no capacity revision was introduced at that point.
  • The front differential capacity of 0.6 liter on the xDrive variants is notably smaller than the 1 liter rear differential capacity, which is consistent with the front unit serving a torque-vectoring or supplementary role rather than carrying the primary drive load.
  • All differential fluid capacities across the G26 lineup are specified exclusively under normal use conditions, with no separate severe-use interval or capacity listed in the specifications.

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