2017 — 2023
4.4L V8 Twin-Turbo (S63) - Introduction of M xDrive AWD system
Petrol
Check this by carefully listening for any metallic rattling or ticking during a cold start, which could indicate the health of the S63 engine's complex VANOS system and timing chain tensioners.
While driving on a quiet road, engage Sport Plus mode and perform a firm acceleration test; observe if the M xDrive system transitions power smoothly without any drivetrain shudder or hesitation.
Check this by inspecting the front wheels and suspension uprights for any signs of seepage from the adaptive dampers, as these electronically controlled units are quite sophisticated and sensitive to age.
While parked at a standstill, cycle through the iDrive menu to ensure the cooling fan engages appropriately, and check the expansion tank for any signs of staining, as the S63 runs very high under-hood temperatures.
Usually marks the interval where differential and transmission fluids are recommended to be refreshed to ensure the M xDrive system continues to operate with precision.
A common point to evaluate the condition of suspension bushings and control arms, as the high torque of the F90 can accelerate wear on these components.
The period where more comprehensive engine work, such as spark plug replacement and secondary ignition components, is often required to maintain optimal performance.
Prioritise regular engine oil changes every 10,000km, using only high-quality BMW-spec synthetic oil to protect those twin turbochargers.
Keep a close eye on the coolant levels and the condition of the plastic cooling lines, which can become brittle over time in our NZ climate.
Ensure the brake fluid is flushed every two years to maintain consistent pedal feel, especially if you plan on using the car for spirited weekend drives.
Verify that the software has been updated by an authorised specialist, as BMW frequently releases micro-updates that improve the M-DCT or ZF gearbox performance.
Maintain a detailed logbook of all work, as future buyers of these high-performance machines truly value a documented history of care.
Estimated repair costs if issues arise
If you are looking at a Competition model fitted with the gold-caliper carbon ceramics, remember that these are incredible performers but will eventually need replacement. It is helpful to consider this a long-term investment in stopping power.
Given the heat generated by the 4.4L twin-turbo setup, you might eventually need to budget for a refresh of the water pump and auxiliary cooling hoses to ensure the engine stays within its happy operating temperature range.
Depending on the car's history and the condition of our local roads, one or more of the adaptive dampers may eventually require replacement to maintain the factory-standard ride quality.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer