BMW 8 series Coupé, G15 / F92 (USA)

Additional Notes

• The BMW M8 xDrive Coupé carries a high temperature cooling circuit capacity of 11.5 liters, which is notably larger than the high temperature circuit figures seen in the M850i xDrive Coupé, reflecting the greater thermal load generated by the M8's higher-output engine.
• The M8 xDrive Coupé also has a low temperature cooling circuit rated at 4.5 liters, a separate loop that typically handles components such as charge air coolers or power electronics requiring lower operating temperatures than the main engine circuit.
• The M850i xDrive Coupé lists a high temperature cooling circuit capacity as a range of 8.75 to 10 liters rather than a fixed value, indicating that the actual fill volume can vary depending on factors such as residual fluid in the system or specific build configuration.
• The M850i xDrive Coupé's low temperature cooling circuit is specified at 3.25 liters, a fixed value across both the 2018-2019 and 2019 onward entries, suggesting consistency in that circuit's design across those production periods.
• The M850i xDrive Coupé entry covering model years 2018-2019 carries an additional production date qualifier, noting applicability as of 01-08-2018, which means the stated capacity figures apply only to vehicles assembled from that date forward within that model year window.
• All three rows are designated for normal use conditions, meaning the capacity figures listed are not adjusted for severe-duty or extreme operating environments.
• The dual-circuit cooling architecture present across both the M8 and M850i configurations separates high and low temperature loops, a design common in turbocharged and high-performance engines where different components require distinct thermal management.