2015 — 2018
GLE63 AMG 5.5L V8 Bi-Turbo
Petrol
While idling, listen for any rhythmic ticking or chain rattle from the front of the engine, as the M157 V8 timing chain tensioners can eventually show signs of wear in higher-mileage examples.
Check the air suspension by cycling through the drive modes; ensure the vehicle lifts and lowers promptly without warning lights on the dash, as air bellows can sometimes develop micro-leaks over time.
While driving at a steady speed, observe the gear changes for smoothness; the 7G-TRONIC transmission requires regular fluid changes to remain crisp, and any hesitation is worth further investigation.
Inspect the front lower control arm bushings for any clunking sounds over speed bumps, as the heavy weight of the V8 engine places significant demand on the front-end suspension components.
Consider a major service including transmission fluid flush and differential oil replacement to maintain the health of the drivetrain.
It is often a good time to inspect the cooling system components, including the water pump and auxiliary coolant hoses, which may start to show age.
The ignition coils and spark plugs are often due for a refresh to ensure the Bi-Turbo V8 continues to perform at its peak efficiency.
Prioritize regular engine oil changes every 10,000km using high-quality synthetic lubricants to protect the sensitive turbochargers.
Keep a close eye on your coolant levels, as the M157 engine runs quite warm and keeping the cooling system in top shape is key.
Check your brake pad and rotor thickness during every service, given the high performance and weight of this vehicle.
Ensure the panoramic sunroof tracks are cleaned and lubricated occasionally to prevent the mechanism from binding over time.
Verify that the battery is maintained at full charge, as these modern Mercs rely heavily on stable voltage for their complex electronic modules.
Estimated repair costs if issues arise
If the vehicle begins to sag overnight, you might eventually need to budget for the replacement of one or more air struts. It is common to address these in pairs to ensure even performance.
The auxiliary pumps for the turbos are a known maintenance point. If you notice a check engine light related to cooling, it’s often a simple pump failure that needs addressing to keep turbo temperatures safe.
As this is an AMG performance model, the braking system is quite substantial. When the time comes to refresh the rotors and pads, opting for quality components ensures you maintain that signature AMG stopping power.
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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