2006 — 2007
3.5L (M272) V6 - R350 Luxury/Elegance
Petrol
Check the balance shaft gear status by checking service records for the engine number (M272 serial numbers below 273930 30 468993 are most susceptible to sprocket wear). | Action: Ensure the timing chain and balance shaft have been inspected or repaired to avoid potential internal engine issues.
While driving on uneven surfaces, listen closely for thumping or creaking sounds from the wheels. | Action: This is a common indication that the Airmatic suspension components or control arm bushings may be approaching the end of their service life.
Test the transmission by shifting between P, R, and D while stationary, and perform a slow-speed crawl to check for jerking or delayed gear engagement. | Action: The 7G-Tronic transmission benefits from regular fluid changes, so ensure the shifting feels seamless without hesitation.
Turn the climate control to both extreme heat and cold and check the footwell vents. | Action: Verify that all cabin zones function correctly, as the blend door actuators can occasionally stick in vehicles of this vintage.
Consider a full transmission service and inspection of the engine mounts.
Often the time to evaluate the health of the air suspension struts and compressor.
Check the cooling system, specifically the radiator hoses and thermostat housing, which are prone to plastic degradation over time.
Prioritise an oil change using high-quality synthetic oil every 10,000km to protect the M272 engine.
Inspect the panoramic sunroof tracks for debris and lubricate them to ensure smooth operation.
Keep the cabin air filters fresh to prevent moisture buildup and potential electrical corrosion.
Check the battery condition regularly, as these cars are sensitive to voltage drops which can trigger false dashboard warnings.
Ensure the brake fluid is flushed every two years to maintain the responsiveness of the braking system.
Estimated repair costs if issues arise
If this component needs attention, it is a significant job requiring engine removal. It is wise to verify if this has been addressed by a previous owner to ensure long-term engine reliability.
Depending on the car's history, you might eventually need to budget for replacing the air struts, which can lose their ability to hold pressure over many years.
If the transmission begins to show erratic shifting, the electronic conductor plate may eventually require a professional assessment and possible replacement.
Noticed something inaccurate or missing?Suggest an edit→
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