2013 — 2021
3.0L V6 Diesel - SDV6
Diesel
Test Drive Task: Listen for suspension 'clunks' at low speed over uneven surfaces. | Description: It is quite common in the L405 generation for air suspension components and lower control arm bushings to show wear as they age, which might eventually impact ride comfort.
Test Drive Task: Check the operation of the infotainment system and retractable door handles. | Description: The complex electronics in these vehicles can occasionally become temperamental; cycling through the menus and ensuring all door handles extend smoothly provides good insight into the current state of the electrical systems.
Test Drive Task: Perform a cold start and monitor the exhaust. | Description: While checking the vehicle, observe the start-up process to ensure the engine idles steadily, as fuel injectors and sensors in the SDV6 unit are components that benefit from consistent servicing.
Test Drive Task: Test the panoramic roof and all windows. | Description: It is worth verifying that the sunroof tracks operate without hesitation or unusual noises, as the intricate mechanisms in these premium features can sometimes require maintenance to keep them sliding freely.
Consider a full transmission fluid and filter flush to ensure longevity of the ZF gearbox.
Typically a point to inspect the cooling system hoses and connections for any signs of aging.
Review the condition of the air suspension compressor and potential replacement of worn suspension air bags if the vehicle sits unevenly.
Ensure the AdBlue system is topped up regularly with high-quality fluid to prevent sensor faults.
Prioritize a strict 10,000km or annual oil and filter change to keep the V6 diesel running at its best.
Check the brake pad and rotor wear during every service, as the heavy weight of the vehicle naturally works the braking system hard.
Keep the battery in peak condition using a trickle charger if the vehicle is not driven daily, as the electrical systems are sensitive to voltage drops.
Regularly clear out the sunroof drains to prevent water ingress, which is a simple but vital task for long-term ownership.
Estimated repair costs if issues arise
If the vehicle begins to struggle with leveling or you hear the compressor running excessively, it is wise to budget for a refresh of these air-based components to maintain that signature smooth ride.
Depending on the vehicle's history of short versus long trips, you might eventually need to budget for a professional DPF deep clean or sensor replacement to maintain emissions efficiency.
The ZF 8-speed gearbox is a brilliant unit, but if you notice any hesitation in gear changes, it is worth setting aside funds to have the mechatronic sleeve and fluid refreshed to keep shifting silky smooth.
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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