2024 — 2026
4.4L (S68) V8 Plug-in Hybrid - Modern Performance
Petrol/Electric
Spend some time cycling through the M Hybrid drive modes while stationary and at low speeds to ensure the transition between the electric motor and the S68 V8 is seamless without any drivetrain snatch.
Check the iDrive 8.5/9 screen responsiveness by navigating through the climate and M-specific menus while driving to ensure the touch-input software isn't showing signs of lag or screen stutter.
Find a slightly uneven road surface to evaluate the air suspension and adaptive dampers; listen closely for any unusual knocking or clunking sounds which might indicate component stress given the vehicle's significant curb weight.
Perform a cold start and monitor the exhaust note; ensure there are no erratic idle fluctuations or warning lights appearing on the digital cluster, as the complex emission control systems require precise calibration.
Initial run-in service is critical to ensure the S68 engine internals have settled correctly and the differential oil has been flushed.
Consider a proactive check of the high-voltage cable connectors and charging port integrity to prevent moisture ingress.
Common point to evaluate the condition of the regenerative braking system components and the state of the auxiliary cooling pumps for the hybrid battery pack.
Always use the exact high-performance synthetic oil recommended by BMW to protect the intricate VANOS and turbocharger systems.
Keep up with the 'micro-filter' replacements to ensure the advanced climate control system remains efficient for both passengers and hybrid battery cooling.
Regularly verify that the software version of the iDrive system is up to date, as many performance parameters are controlled via over-the-air updates.
Ensure the cooling system for the hybrid components is inspected during every annual service, as this is vital for longevity in NZ's fluctuating temperatures.
Monitor tyre pressures weekly, as the weight of the G90 M5 can cause premature wear on the inner edges of the performance rubber.
Estimated repair costs if issues arise
As the vehicle ages, the capacity of the lithium-ion battery may naturally shift. It is wise to eventually budget for a professional health diagnostic report to ensure the hybrid system continues to deliver optimal performance.
Given the substantial weight of the G90 platform, the braking system works hard. Depending on your driving style, you might eventually need to budget for premium pads and high-performance discs.
In luxury performance vehicles of this nature, the air struts may require attention after several years of operation. It is worth keeping a future budget buffer for potential suspension sensor or airbag maintenance.
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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