BMW X4, G02 / F98 (USA)

Differential fluid capacity & service interval

BMW X4, G02 / F98 (USA) differential fluid capacity ranges from 0,8 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
  • X4 M (2019- )
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Change 50000 miles
  • Code: SA2T4
  • X4 M (2019- )
  • Rear
  • Use: First change only
  • Capacity 1 liter
  • Change 1200 miles
  • Code: SA2T4
  • X4 M Competition (2019- )
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Change 50000 miles
  • Code: SA2T4
  • X4 M Competition (2019- )
  • Rear
  • Use: First change only
  • Capacity 1 liter
  • Change 1200 miles
  • Code: SA2T4
  • X4 xDrive M40i (2019- )
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Code: 215 LWS SA2T4
  • X4 xDrive M40i (2019- )
  • Rear, as of 03/2020
  • Use: Normal
  • Capacity 0,8 liter
  • Code: 205AL
  • X4 xDrive M40i (2019- )
  • Rear, up to 02/2020
  • Use: Normal
  • Capacity 0,8 liter
  • Code: 205AL
  • X4 xDrive30i (2019- )
  • Rear, as of 03/2020
  • Use: Normal
  • Capacity 0,8 liter
  • Code: 205AL
  • X4 xDrive30i (2019- )
  • Rear, up to 02/2020
  • Use: Normal
  • Capacity 0,8 liter
  • Code: 205AL
  • X4 xDrive M40i (2018-2019)
  • Rear
  • Use: Normal
  • Capacity 0,8 liter
  • Code: 205AL
  • X4 xDrive M40i (2018-2019)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Code: 215 LWS SA2T4
  • X4 xDrive30i (2018-2019)
  • Rear
  • Use: Normal
  • Capacity 0,8 liter
  • Code: 205AL

Additional Notes

  • The BMW X4 M and X4 M Competition share identical rear differential fluid capacities of 1 liter and the same service intervals, with a normal change interval set at 50,000 miles.
  • Both the X4 M and X4 M Competition carry a first-change-only interval of 1,200 miles. A first-change-only interval is a break-in service designed to flush metal particles generated during initial component wear, and at 1,200 miles, the fluid is replaced well before the standard 50,000-mile cycle resumes.
  • The X4 xDrive M40i for model years 2018-2019 lists two separate rear differential capacities under normal use: 0.8 liter and 1 liter. The presence of two values for the same model year range indicates that two different rear differential units were fitted to the xDrive M40i during that period.
  • For the X4 xDrive M40i with a 2019 start year, three capacity entries appear. One entry lists 1 liter with no production date qualifier, while two separate entries both list 0.8 liter — one applying up to 02/2020 and one as of 03/2020. The split at the 02/2020 and 03/2020 boundary reflects a mid-production change in the differential unit, with the 0.8-liter capacity applying on both sides of that transition.
  • The X4 xDrive30i for model years 2018-2019 specifies a single rear differential capacity of 0.8 liter under normal use, with no change interval listed.
  • The X4 xDrive30i with a 2019 start year also carries two production-date-qualified entries, both at 0.8 liter — one up to 02/2020 and one as of 03/2020 — mirroring the same mid-production split seen on the xDrive M40i of the same generation.
  • The 1-liter capacity associated with the X4 M and X4 M Competition is notably higher than the 0.8-liter figure seen across the xDrive30i and most xDrive M40i configurations, consistent with the larger or higher-performance rear differential units typically found in M-designated variants.

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