2010 — 2011
5.5L (M273) V8 - E550 Naturally Aspirated
Petrol
Check the transmission during low-speed crawling. | Observation: While driving in stop-start traffic, pay attention to any hesitation or clunky shifts between first and second gear, as the 7G-Tronic transmission occasionally shows signs of wear in higher mileage examples.
Inspect the AirMatic suspension response. | Observation: Park the car on level ground and ensure it sits evenly; during the drive, listen for any persistent compressor noise, as these systems can eventually require maintenance on older W212s.
Cold start the engine with the bonnet open. | Observation: Listen closely for any momentary rattling sounds during the first few seconds of startup; while the M273 is robust, it is helpful to verify the health of the timing chain components.
Test all electrical accessories. | Observation: Cycle through the COMAND infotainment system, seat adjustments, and sunroof; these cars are highly sophisticated, and checking that all electronics are functional is a wise step.
Consider a full transmission fluid and filter service if not already documented.
Inspect motor mounts for signs of flattening or vibration transferring to the cabin.
Evaluate suspension bushings and control arms for general wear and tear.
Ensure the engine oil is changed every 10,000km or annually using high-quality synthetic oil.
Keep an eye on the coolant reservoir for any signs of discolouration or leaks.
Regularly clear the sunroof drains to prevent water ingress into the cabin electronics.
Verify that the battery is healthy, as these models are sensitive to voltage fluctuations.
Inspect the brake pads and rotors periodically, as the E550 has significant power to manage.
Estimated repair costs if issues arise
If the car begins to sag after being parked for a few days, you might eventually need to budget for the replacement of air struts. It is common to consider this as part of long-term ownership of an E-Class with air suspension.
If you notice an uneven idle or a check engine light, it may be related to the camshaft magnets. It is a known area of consideration for the M273 engine family as they age.
To keep the 7-speed gearbox shifting smoothly, it is beneficial to factor in a professional transmission service if there is no record of it in the logbook.
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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