2005 — 2011
4.4L (B8444S) - V8 AWD Executive/R-Design
Petrol
Check the transmission shift quality while accelerating through the gears, specifically looking for any hesitation or 'flaring' between 2nd and 3rd gear. | Note: On the P2 platform, the Aisin 6-speed automatic can sometimes show wear in the valve body as the kilometres climb.
Inspect the front lower control arms and bushings by performing a 'wobble test' or listening for clunks over uneven NZ backroads. | Note: These heavy V8s put significant stress on the front suspension components, making regular wear a normal consideration.
Open the oil filler cap while the engine is idling to check for excessive positive crankcase pressure or smoke. | Note: The Volvo PCV system is a known service item; when it clogs, it can cause oil seal leaks that are worth monitoring.
Verify the Four-C active chassis system by cycling through the 'Comfort', 'Sport', and 'Advanced' buttons while driving on a bumpy surface. | Note: It is worth checking if you can feel a distinct difference in damping, as the electronic struts are complex components that may require attention eventually.
Usually the time to ensure the spark plugs and transmission fluid have been serviced recently.
A good point to check the condition of the alternator and the cooling system hoses for signs of aging.
Consider assessing the suspension struts and any peripheral engine sensors for optimal performance.
Prioritise regular engine oil changes using high-quality synthetic oil to keep that Yamaha-designed V8 running smoothly.
Keep a close eye on the coolant reservoir levels, as older plastic expansion tanks can sometimes develop fine cracks.
Ensure the AWD system is functioning well; checking the angle gear and Haldex fluid during service is a great proactive habit.
Check the condition of the serpentine belt and tensioner, as these are exposed to heat and should be part of a long-term care plan.
Regularly clean the sunroof drains to prevent water ingress, which is a common quirk to manage in older XC90s.
Estimated repair costs if issues arise
If you notice harsh gear changes in the future, it may eventually require a valve body rebuild or replacement to restore smooth shifting.
These active dampers are fantastic for ride comfort but are more expensive than standard shocks. It is wise to set aside funds for their eventual replacement.
To keep the engine seals healthy, the PCV oil trap and hoses may need replacing if you notice any oil weeping; it's a labor-intensive but vital maintenance job.
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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