BMW Z4 Roadster, E85 (USA)

Automatic transmission fluid capacity & service interval

BMW Z4 Roadster, E85 (USA) automatic transmission fluid capacity ranges from 8,9 to 9,5 liters. The data covers 4 configurations.

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

TypeSpecifications
Z4 3.0i (2005-2008)
  • Use: Normal
  • Capacity 9-9,5 liter
  • Code: ZF 6HP19 6/1
Z4 3.0si (2005-2008)
  • Use: Normal
  • Capacity 9-9,5 liter
  • Code: ZF 6HP19 6/1
Z4 2.5i (2002-2006)
  • Use: Normal
  • Capacity 8,9 liter
  • Code: ZF 5HP19 (A5S325Z) 5/1
Z4 3.0i (2002-2006)
  • Use: Normal
  • Capacity 8,9 liter
  • Code: ZF 5HP19 (A5S325Z) 5/1

Additional Notes

  • The BMW Z4 Roadster E85 automatic transmission fluid capacity varies depending on the engine variant and model year, with two distinct capacity figures appearing across the lineup.
  • The Z4 2.5i and Z4 3.0i for 2002-2006 share an identical automatic transmission fluid capacity of 8.9 liters, indicating both variants used the same transmission unit during that period.
  • The Z4 3.0i for 2005-2008 carries a capacity range of 9 to 9.5 liters, which is higher than the 8.9-liter figure specified for the earlier 2002-2006 3.0i, reflecting a difference in transmission specification between the two production spans of the same engine variant.
  • The Z4 3.0si for 2005-2008 shares the same 9 to 9.5-liter capacity range as the 2005-2008 3.0i, suggesting both variants used the same automatic transmission assembly during those years.
  • A capacity expressed as a range, such as 9 to 9.5 liters, typically accounts for variation between a drain-and-fill service and a full overhaul or torque converter replacement, where the converter retains residual fluid during a standard service.
  • All four configurations carry a normal use condition designation, meaning the specified capacities apply under standard operating conditions rather than a severe-duty service schedule.

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