BMW 8 series Coupé, G15 / F92 (USA)

Differential fluid capacity & service interval

BMW 8 series Coupé, G15 / F92 (USA) differential fluid capacity ranges from 0,6 to 1 liter. Service intervals include changes at 1200 miles and 50000 miles. The data covers 12 configurations.

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

TypeSpecifications
  • M8 Competition Coupé xDrive (2020- )
  • Front, as of 03/2020
  • Use: Normal
  • Capacity 0,6 liter
  • Code: 175AL
  • M8 Competition Coupé xDrive (2020- )
  • Rear
  • Use: First change only
  • Capacity 1 liter
  • Change 1200 miles
  • Code: 225 M SA2T4
  • M8 Competition Coupé xDrive (2020- )
  • Rear
  • Use: Flexible (on board maintenance system)
  • Capacity 1 liter
  • Change 50000 miles
  • Code: 225 M SA2T4
  • 840i xDrive Coupé (2019- )
  • Front, as of 03/2020
  • Use: Normal
  • Capacity 0,6 liter
  • Code: 170AL
  • 840i xDrive Coupé (2019- )
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Code: HAG 225 ALS SA2T4
  • M8 xDrive Coupé (2019- )
  • Front, as of 03/2020
  • Use: Normal
  • Capacity 0,6 liter
  • Code: 175AL
  • M8 xDrive Coupé (2019- )
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Change 50000 miles
  • Code: 225 M SA2T4
  • M8 xDrive Coupé (2019- )
  • Rear
  • Use: First change only
  • Capacity 1 liter
  • Change 1200 miles
  • Code: 225 M SA2T4
  • M850i xDrive Coupé (2019- )
  • Front, as of 03/2020
  • Use: Normal
  • Capacity 0,6 liter
  • Code: 175AL
  • M850i xDrive Coupé (2019- )
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Code: HAG 225 ALS SA2T4
  • M850i xDrive Coupé (2018-2019)
  • Front
  • Use: Normal
  • Capacity 0,6 liter
  • Code: 175AL
  • M850i xDrive Coupé (2018-2019)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Code: HAG 225 ALS SA2T4

Additional Notes

  • Across all xDrive configurations in the BMW 8 Series Coupé G15/F92 USA range, the front differential holds 0.6 liter, while the rear differential holds 1 liter, making the rear unit the larger of the two service points on every listed variant.
  • The front differential capacity note for the 840i xDrive Coupé, M8 xDrive Coupé, M8 Competition Coupé xDrive, and the revised M850i xDrive Coupé specifies an "as of 03/2020" qualifier, indicating a production change point that applies to front differential servicing from that date forward.
  • The M850i xDrive Coupé carries two separate front differential entries: one covering 2018-2019 without a production date qualifier, and a second entry starting in 2019 with the "as of 03/2020" notation, both sharing the same 0.6 liter capacity.
  • The M8 Competition Coupé xDrive rear differential is the only entry in the dataset that carries a first-change-only interval, set at 1,200 miles with a 1 liter capacity. A first-change interval at such low mileage is typically associated with break-in fluid replacement to remove metal particles generated during initial component wear-in.
  • Following the first-change service, the M8 Competition Coupé xDrive rear differential transitions to a flexible interval governed by the on-board maintenance system, with a maximum interval of 50,000 miles and the same 1 liter capacity.
  • The M8 xDrive Coupé rear differential shares the same dual-interval structure as the M8 Competition Coupé xDrive, with a first-change interval at 1,200 miles and a normal-use interval at 50,000 miles, both at 1 liter capacity.
  • The 840i xDrive Coupé and M850i xDrive Coupé rear differentials carry no stated change interval in the specifications, with only a 1 liter capacity listed under normal use conditions.

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