2013 — 2017
5.5L V8 Bi-Turbo (CLS 63 AMG S) - AWD
Petrol
Check the transmission responsiveness during low-speed crawling. | Observation: In the C218 CLS 63 AMG, the MCT (Multi-Clutch Technology) transmission can feel slightly firm or hesitant at low speeds. Ensure there is no significant 'clunking' when transitioning between gears, as this could indicate wear in the clutch packs or mounting bushes.
Listen carefully to the engine cold-start sequence. | Observation: With the M157 5.5L Bi-Turbo, it is common to listen for any rattling sounds during the first few seconds of ignition. This can sometimes relate to the cam phasers or timing chain tensioners, which are worth noting if the engine has high kilometers.
Navigate over some uneven road surfaces to test the suspension. | Observation: The Airmatic suspension provides a smooth ride, but over time, the air struts or the air compressor may show signs of fatigue. Ensure the car sits level and maintains its height after sitting parked for a short period.
Perform a 'hard' acceleration on a safe stretch of road. | Observation: Monitor the engine temperature and oil pressure gauges. You want to ensure there is no hesitation or limp-mode triggers under load, which might suggest the intercooler pump or a boost-related sensor might eventually need a check-up.
Usually marks the interval for transmission fluid and filter service, which is critical for the long-term health of the MCT gearbox.
Often the time to inspect the condition of the brake rotors and pads, particularly the high-performance steel setups which are known to be substantial investments.
Consider having the cooling system inspected, including the auxiliary pumps and the integrity of the plastic coolant hoses that may become brittle with age and heat cycles.
Prioritize oil changes every 10,000km using the manufacturer-specified synthetic to look after those precision-engineered turbochargers.
Keep an eye on the tire wear patterns; the aggressive alignment settings on the AMG can lead to inner-edge wear if not monitored.
Regularly clear the front cowl and sunroof drainage points to ensure the interior electronics remain dry and happy.
Ensure the service history shows regular brake fluid flushes, as this helps keep the complex braking systems performing at their best.
Check the battery health during winter, as these cars are quite demanding on electrical systems when the ambient temperature drops.
Estimated repair costs if issues arise
If the vehicle begins to sag overnight or displays a dashboard warning, it may indicate a leaky air bag. Depending on the car's history, you might eventually need to budget for a professional strut replacement.
The MCT is a brilliant transmission but does wear over time. If this component needs attention in the future, the estimated cost in NZ includes specialized labor and genuine Mercedes-Benz parts.
The CLS 63 S utilizes heavy-duty braking components. Due to their size and performance rating, it is common to plan for these as a significant wear item when the time comes to refresh the 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