2018 — 2021
2.0L Turbo (M264) - C300 AMG Line
Petrol
Check this by inspecting the cooling system: While the engine is cold, ensure the coolant reservoir is clean and free of oily residue, as M264 engines occasionally experience minor gasket or heat exchanger concerns.
Listen closely for any 'clunking' from the front suspension over speed bumps, as the complex multi-link setup can show signs of wear in the control arm bushings as the vehicle approaches higher mileages.
Cycle through 'Comfort' to 'Sport+' while stationary and then on the move to ensure the electronic damper adjustment (if fitted) and transmission shifting remain crisp without hesitation or jarring.
Check this by observing the infotainment: Ensure the Burmester audio system and the dual-screen interface are responsive, as older software versions or localized connectivity issues can sometimes manifest as intermittent screen flicker or unresponsive touchpads.
Usually marks the first major spark plug and transmission fluid service interval.
Often the point where auxiliary drive belts and tensioners are inspected for signs of wear.
A key threshold for a more comprehensive check of the turbocharger vacuum lines and engine mounts.
Always use the approved Mercedes-Benz specification synthetic engine oil to protect the variable valve timing components.
Ensure the panoramic sunroof tracks, if fitted, are cleaned and lubricated during every major service to prevent motor strain.
Keep an eye on the 12V battery health, as these cars are heavily reliant on stable voltage for their electronic modules.
Regularly rotate your performance tires, as the staggered setup on AMG Line models can lead to uneven inner-edge wear.
Ensure the digital service history is fully up-to-date and verified via the Mercedes-Benz NZ dealer network.
Estimated repair costs if issues arise
If the vehicle is equipped with Airmatic, the air struts or the compressor might eventually require attention as they age. It's wise to set aside some funds for a potential refresh to maintain that signature smooth ride.
It is not uncommon for the plastic thermostat housing to develop a minor seep over time. If you notice a faint smell of coolant or a drop in levels, it is a straightforward fix that you should plan for to keep the cooling system efficient.
The 9G-TRONIC transmission is a sophisticated piece of engineering. To ensure smooth shifting for years to come, keep this service in your future budget plans; it is a vital part of long-term ownership.
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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