2015 — 2018
GLE 400 3.0L V6 Petrol
Petrol
While driving at low speeds, gently apply the brakes to feel for any judder, as the W166 can be sensitive to rotor wear and requires high-quality pads to avoid squeal.
Check the Airmatic suspension by toggling the ride height button while stationary; listen for any persistent compressor noise or delayed leveling, which may indicate a tired pump or small leak.
While parked on a flat surface, cycle through the Comand infotainment system to ensure the rotary controller feels firm and responsive, as these units can occasionally develop electrical lag or button failure.
Before turning on the radio, listen carefully during steady acceleration for any high-pitched whine from the 3.0L V6, as it is helpful to ensure the turbochargers are spooling smoothly without irregular noises.
Usually marks the point where spark plug replacement and transmission fluid flush should be confirmed in the service history.
A common window to check for minor oil seepages around the cam covers and ensure the engine mounts are still providing vibration-free idling.
Consider having a professional inspect the Airmatic struts and compressor filter to maintain ride comfort.
Verify the full service history, ideally prioritizing invoices from Mercedes-Benz specialists.
Check that the panoramic sunroof seals are clear of debris to ensure smooth operation and keep the cabin dry.
Ensure the engine air filters are replaced regularly, as these V6 engines appreciate a clean intake system.
Confirm that the 9G-TRONIC transmission has had its fluid changed as per the recommended service intervals for smooth shifting.
Regularly treat the leather upholstery with a quality conditioner to keep the interior looking fresh under the harsh NZ sun.
Estimated repair costs if issues arise
As the vehicle ages, the rubber air bellows can eventually develop micro-perforations. If the car sags overnight, you might eventually need to budget for replacing the struts or the compressor.
In cars of this age, it is common to consider the health of the plastic cooling components. If you notice any faint coolant scent, plan for a proactive inspection of hoses and the water pump.
Depending on your driving style, the GLE 400 is a heavy vehicle. If this component needs attention in the future, budget for high-quality pads and discs to maintain the factory braking feel.
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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