2013 — 2020
4.7L V8 Twin-Turbo (S500) - Smooth power delivery
Petrol
Check this by inspecting the Airmatic suspension: parked on level ground, ensure the vehicle sits perfectly even and doesn't 'sag' overnight; listen for the compressor running excessively when you start the engine.
While driving, pay close attention to the 9G-TRONIC or 7G-TRONIC transmission shifts; ensure they are seamless and free of 'clunks' or hesitation during moderate acceleration, as these units rely on clean fluid.
Test this by cycling through the infotainment and seat massage functions; these vehicles are packed with complex electronics, and verifying all 'creature comforts' work now helps avoid future headaches.
Inspect the coolant reservoir cap and surrounding hoses; in these V8 twin-turbo configurations, keeping an eye on the cooling system integrity is a wise move given the heat these engines generate.
Usually marks the time for a major transmission service and spark plug replacement to keep that V8 running crisp.
The period where suspension components, like control arm bushings, may start to show signs of wear, affecting that trademark 'magic carpet' ride.
A point where secondary engine accessories and the cooling system components often benefit from a refresh to ensure ongoing reliability.
Ensure the service history shows regular engine oil changes using high-quality synthetic lubricants, as the twin-turbos love clean oil.
Confirm the panoramic sunroof tracks have been cleaned and lubricated to prevent binding.
Check that the battery health has been monitored, as the S-Class relies heavily on a stable electrical system.
Verify the brake fluid has been flushed every two years to protect the sensitive ABS/ESP modules.
Check for any software updates that may have been applied by an authorized service centre to keep the infotainment system stable.
Estimated repair costs if issues arise
These air struts are marvelous for comfort, but as the rubber ages, they may eventually leak. It is worth keeping a buffer aside in case an individual corner needs replacing to maintain the car's ride height.
Given the substantial torque of the V8, the hydraulic engine mounts can eventually compress, which might lead to minor vibrations at idle. Replacing these restores that vault-like smoothness.
If you notice slight shift inconsistencies, it is often related to the electronic control unit within the transmission. Addressing this early keeps the driving experience refined.
Noticed something inaccurate or missing?Suggest an edit→
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