BMW 4 series Gran Coupé, G26 (EU)

Differential fluid capacity & service interval

BMW 4 series Gran Coupé, G26 (EU) differential fluid capacity ranges from 0,6 to 1 liter. Service intervals include normal and flexible on board maintenance system options. The data covers 3 configurations.

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

TypeSpecifications
  • Alpina B4 xDrive PF (364 kW) (2022-2024)
  • Front
  • Use: Normal
  • Capacity 0,6 liter
  • Code: 170AL
  • Alpina B4 xDrive PF (364 kW) (2022-2024)
  • Rear
  • Use: Flexible (on board maintenance system)
  • Capacity 1 liter
  • Code: 215 LWS SA2T4
  • Alpina D4 S Mild-Hybrid xDrive (261 kW) (2022-2024)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Code: 215 LWS SA2T4

Additional Notes

  • The front differential of the BMW 4 Series Gran Coupé G26 Alpina B4 xDrive PF (364 kW) holds 0.6 liters, a notably smaller capacity than the rear unit, which reflects the compact housing typical of front-mounted differentials in xDrive all-wheel-drive layouts.
  • The rear differential on the Alpina B4 xDrive PF (364 kW) carries a 1-liter capacity and is serviced under a flexible interval governed by the on-board maintenance system, meaning service timing adjusts dynamically based on operating conditions rather than a fixed mileage or time schedule.
  • The Alpina D4 S Mild-Hybrid xDrive (261 kW) rear differential also holds 1 liter, with service performed under normal use conditions rather than the flexible on-board maintenance system interval applied to the Alpina B4 xDrive PF rear differential.
  • Both the Alpina B4 xDrive PF and the Alpina D4 S Mild-Hybrid xDrive share a 1-liter rear differential capacity across the 2022-2024 model years, despite differing in powertrain type and output.
  • The front differential capacity of 0.6 liters on the Alpina B4 xDrive PF is serviced under normal use conditions, in contrast to the rear differential on the same vehicle, which follows the flexible on-board maintenance system interval.

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