BMW 7 series, G70 (USA)

Additional Notes

• The BMW 7 Series G70 (USA) cooling system is split into two separate circuits across all listed configurations: a high temperature cooling circuit and a low temperature cooling circuit, each carrying a distinct fluid capacity.
• The high temperature cooling circuit handles the primary engine cooling load, while the low temperature cooling circuit typically manages heat from ancillary systems such as charge air cooling or power electronics, which explains why the two circuits carry different capacities within the same vehicle.
• The 740i Mild-Hybrid, introduced from 2022, carries 14 liters in the high temperature circuit and 6 liters in the low temperature circuit, giving a combined cooling system capacity of 20 liters.
• The 740i Mild-Hybrid xDrive, introduced from 2023, shares the same 14-liter high temperature and 6-liter low temperature capacities as the non-xDrive 740i Mild-Hybrid, indicating the addition of all-wheel drive hardware does not alter the cooling system volume for that engine configuration.
• The 750e Plug-in Hybrid xDrive, introduced from 2023, carries 12.6 liters in the high temperature circuit and 5.4 liters in the low temperature circuit, producing a combined total of 18 liters — lower than the 740i figures despite the added complexity of a plug-in hybrid drivetrain.
• The 760i Mild-Hybrid xDrive, introduced from 2022, carries the largest cooling system volumes among the listed configurations, with 18.2 liters in the high temperature circuit and 7.8 liters in the low temperature circuit, totaling 26 liters. The substantially higher capacity relative to the 740i configurations reflects the greater thermal output of the larger engine fitted to the 760i.
• All four configurations list a normal use condition, meaning the capacities specified apply to standard operating environments without a separate severe-duty or first-fill distinction noted in the specifications.