2015 — 2018
GLE400 3.0L V6 Biturbo
Petrol
While driving at low speeds, gently turn the steering wheel lock-to-lock to listen for any clicking or whining from the steering rack, as these components can show wear as they age.
Cycling through the Airmatic air suspension settings while parked on level ground to ensure the vehicle levels itself promptly without any audible hissing sounds.
While cruising at a steady speed, observe the transmission shifting behavior; ensure the 9G-Tronic shifts are smooth and fluid, as older units can occasionally develop slight hesitation that may benefit from a software update or fluid service.
Inspecting the engine bay after your test drive for any faint sweet-smelling vapours, which might indicate that cooling system components are starting to show their age.
Consider a full transmission fluid and filter flush to maintain shifting longevity.
Typically the period where suspension components like control arm bushings might exhibit minor play.
Keep an eye on the water pump and auxiliary drive belts as part of preventative care.
Prioritise a full pre-purchase inspection from a specialist who has experience with the M276 engine architecture.
Ensure the digital service history is complete and reflects timely oil changes, ideally every 10,000 to 15,000km.
Check that the panoramic sunroof seals are clean and lubricated to prevent any drainage blockages.
Verify that the battery management system is operating correctly, as these vehicles rely heavily on stable voltage.
Confirm that the most recent brake fluid flush was performed, as moisture buildup can affect the braking feel.
Estimated repair costs if issues arise
If the air struts begin to lose pressure over time, you might eventually need to budget for their replacement to ensure the ride remains comfortable. It is a common wear item for this vehicle's age.
You might notice increased cabin vibration as the rubber in the engine mounts settles. If this becomes noticeable, planning for a replacement will restore that signature Mercedes smoothness.
For future budget planning, keep in mind that the rubber seals or lines associated with the biturbo setup can become brittle with heat cycles, potentially requiring attention down the road.
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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