BMW 8 series Coupé, G15 / F92 (EU)

Coolant capacity & service interval

BMW 8 series Coupé, G15 / F92 (EU) coolant specifications include capacities ranging from 1.3 liter to 13.24 liter depending on the cooling circuit and configuration. The high temperature cooling circuit capacity ranges from 10.2 liter to 13.24 liter, while the low temperature cooling circuit capacity is 1.3 liter. The data covers 5 configurations.

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

TypeSpecifications
840d Mild-Hybrid xDrive Coupé DPF (250 kW) (2020- )
  • Use: Normal
  • Capacity 10,2 liter (High temperature cooling circuit )
  • Capacity 1,3 liter (Low temperature cooling circuit)
840d xDrive Coupé DPF (235 kW) (2019-2020)
  • Use: Normal
  • Capacity 9,5 liter
M850i xDrive Coupé PF (2019- )
  • Use: Normal
  • Capacity 11,94-13,24 liter (High temperature cooling circuit )
  • 840d xDrive Coupé DPF (235 kW) (2018-2019)
  • As of prod. date 01-08-2018
  • Use: Normal
  • Capacity 9,5 liter
  • M850i xDrive Coupé PF (2018-2019)
  • As of prod. date 01-08-2018
  • Use: Normal
  • Capacity 11,94-13,24 liter (High temperature cooling circuit )

Additional Notes

  • The BMW 8 Series Coupé G15/F92 840d Mild-Hybrid xDrive (250 kW) from 2020 onward carries a split cooling architecture, with a high temperature cooling circuit holding 10.2 liters and a separate low temperature cooling circuit holding 1.3 liters. The presence of a dedicated low temperature circuit reflects the thermal management demands of the mild-hybrid electrical components.
  • The 840d xDrive Coupé DPF (235 kW) in both the 2018-2019 and 2019-2020 model ranges shares a single cooling circuit with a capacity of 9.5 liters, in contrast to the later mild-hybrid variant which introduced the dual-circuit layout.
  • The 840d xDrive Coupé DPF (235 kW) covering 2018-2019 carries a production date qualifier of 01-08-2018, meaning the 9.5-liter specification applies only to units manufactured from that date onward within the stated model year range.
  • The M850i xDrive Coupé PF lists a high temperature cooling circuit capacity range of 11.94 to 13.24 liters across both the 2018-2019 and 2019 onward entries. A stated capacity range rather than a fixed value typically reflects variation introduced by optional equipment or engine ancillary configurations at the time of production.
  • The M850i xDrive Coupé PF in the 2018-2019 range also carries the production date qualifier of 01-08-2018, aligning with the same manufacturing cutoff noted for the 840d xDrive of the same period.
  • Comparing the diesel and petrol variants, the M850i high temperature circuit capacity of 11.94-13.24 liters is notably larger than the 840d non-hybrid figure of 9.5 liters, consistent with the greater thermal output of the larger displacement petrol engine used in the M850i.
  • All entries across the 840d and M850i configurations are specified under normal use conditions, meaning the stated capacities apply to standard operating environments rather than severe-duty or first-fill scenarios.

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